[PATCH 00/13] [GIT PULL] perf tools: updates to parsing events

[PATCH 00/13] [GIT PULL] perf tools: updates to parsing events

[Steven Rostedt]

Ingo,

Please pull the latest perf/core tree, which can be found at:

  git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace.git
perf/core


Steven Rostedt (13):
      perf tools: handle print concatinations in event format file
      perf tools: fix backslash processing on trace print formats
      perf tools: handle trace parsing of '<' and '>'
      perf tools: handle arrays in print fields for trace parsing
      perf tools: handle '*' as typecast in trace parsing
      perf tools: handle newlines in trace parsing better
      perf tools: handle the case with and without the "signed" trace field
      perf tools: still continue on failed parsing of an event
      perf tools: fix bprintk reading in trace output
      perf tools: handle both versions of ftrace output
      perf tools: add latency format to trace output
      perf tools: handle '-' and '+' in parsing trace print format
      perf tools: remove all char * typecasts and use const in prototype

----
 tools/perf/Makefile                 |    2 +-
 tools/perf/builtin-trace.c          |    2 +
 tools/perf/util/trace-event-parse.c |  533 +++++++++++++++++++++++++----------
 tools/perf/util/trace-event.h       |   25 ++-
 4 files changed, 405 insertions(+), 157 deletions(-)

[PATCH 01/13] [PATCH 01/13] perf tools: handle print concatinations in event format file

[Steven Rostedt]

[-- Attachment #1: 0001-perf-tools-handle-print-concatinations-in-event-form.patch --]
[-- Type: text/plain, Size: 1384 bytes --]

From: Steven Rostedt <srostedt@redhat.com>

kmem_alloc ftrace event format had a string that was broken up by
two tokens. "string 1" "string 2". This patch lets the parser be able
to handle the concatination.

Signef-off-by: Steven Rostedt <srostedt@redhat.com>
---
 tools/perf/util/trace-event-parse.c |   16 ++++++++++++++++
 1 files changed, 16 insertions(+), 0 deletions(-)

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index 6f851f9..2fee75f 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -1734,6 +1734,7 @@ static int event_read_print(struct event *event)
 	if (read_expect_type(EVENT_DQUOTE, &token) < 0)
 		goto fail;
 
+ concat:
 	event->print_fmt.format = token;
 	event->print_fmt.args = NULL;
 
@@ -1743,6 +1744,21 @@ static int event_read_print(struct event *event)
 	if (type == EVENT_NONE)
 		return 0;
 
+	/* Handle concatination of print lines */
+	if (type == EVENT_DQUOTE) {
+		char *cat;
+
+		cat = malloc_or_die(strlen(event->print_fmt.format) +
+				    strlen(token) + 1);
+		strcpy(cat, event->print_fmt.format);
+		strcat(cat, token);
+		free_token(token);
+		free_token(event->print_fmt.format);
+		event->print_fmt.format = NULL;
+		token = cat;
+		goto concat;
+	}
+			     
 	if (test_type_token(type, token, EVENT_DELIM, (char *)","))
 		goto fail;
 
-- 
1.6.3.3

[tip:perf/core] perf tools: Handle print concatenations in event format file

[tip-bot for Steven Rostedt]

Commit-ID:  924a79af2cdee26a034b9bdce8c9c76995b5c901
Gitweb:     http://git.kernel.org/tip/924a79af2cdee26a034b9bdce8c9c76995b5c901
Author:     Steven Rostedt <srostedt@redhat.com>
AuthorDate: Wed, 14 Oct 2009 15:43:32 -0400
Committer:  Ingo Molnar <mingo@elte.hu>
CommitDate: Thu, 15 Oct 2009 10:42:34 +0200

perf tools: Handle print concatenations in event format file

kmem_alloc ftrace event format had a string that was broken up
by two tokens. "string 1" "string 2". This patch lets the parser
be able to handle the concatenation.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <20091014194357.253818714@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 tools/perf/util/trace-event-parse.c |   16 ++++++++++++++++
 1 files changed, 16 insertions(+), 0 deletions(-)

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index eef60df..a05c714 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -1734,6 +1734,7 @@ static int event_read_print(struct event *event)
 	if (read_expect_type(EVENT_DQUOTE, &token) < 0)
 		goto fail;
 
+ concat:
 	event->print_fmt.format = token;
 	event->print_fmt.args = NULL;
 
@@ -1743,6 +1744,21 @@ static int event_read_print(struct event *event)
 	if (type == EVENT_NONE)
 		return 0;
 
+	/* Handle concatination of print lines */
+	if (type == EVENT_DQUOTE) {
+		char *cat;
+
+		cat = malloc_or_die(strlen(event->print_fmt.format) +
+				    strlen(token) + 1);
+		strcpy(cat, event->print_fmt.format);
+		strcat(cat, token);
+		free_token(token);
+		free_token(event->print_fmt.format);
+		event->print_fmt.format = NULL;
+		token = cat;
+		goto concat;
+	}
+			     
 	if (test_type_token(type, token, EVENT_DELIM, (char *)","))
 		goto fail;
 

[PATCH 02/13] [PATCH 02/13] perf tools: fix backslash processing on trace print formats

[Steven Rostedt]

[-- Attachment #1: 0002-perf-tools-fix-backslash-processing-on-trace-print-f.patch --]
[-- Type: text/plain, Size: 1479 bytes --]

From: Steven Rostedt <srostedt@redhat.com>

The handling of backslashes was broken. It would stop parsing when
accountering one. Also, '\n', '\t', '\r' and '\\' were not converted.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
---
 tools/perf/util/trace-event-parse.c |   27 +++++++++++++++++++++++++--
 1 files changed, 25 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index 2fee75f..cae88de 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -522,7 +522,10 @@ static enum event_type __read_token(char **tok)
 			last_ch = ch;
 			ch = __read_char();
 			buf[i++] = ch;
-		} while (ch != quote_ch && last_ch != '\\');
+			/* the '\' '\' will cancel itself */
+			if (ch == '\\' && last_ch == '\\')
+				last_ch = 0;
+		} while (ch != quote_ch || last_ch == '\\');
 		/* remove the last quote */
 		i--;
 		goto out;
@@ -2325,7 +2328,27 @@ static void pretty_print(void *data, int size, struct event *event)
 
 	for (; *ptr; ptr++) {
 		ls = 0;
-		if (*ptr == '%') {
+		if (*ptr == '\\') {
+			ptr++;
+			switch (*ptr) {
+			case 'n':
+				printf("\n");
+				break;
+			case 't':
+				printf("\t");
+				break;
+			case 'r':
+				printf("\r");
+				break;
+			case '\\':
+				printf("\\");
+				break;
+			default:
+				printf("%c", *ptr);
+				break;
+			}
+
+		} else if (*ptr == '%') {
 			saveptr = ptr;
 			show_func = 0;
  cont_process:
-- 
1.6.3.3

[tip:perf/core] perf tools: Fix backslash processing on trace print formats

[tip-bot for Steven Rostedt]

Commit-ID:  91ff2bc191827f0d3f5ad0a433ff7df7d2dd9aee
Gitweb:     http://git.kernel.org/tip/91ff2bc191827f0d3f5ad0a433ff7df7d2dd9aee
Author:     Steven Rostedt <srostedt@redhat.com>
AuthorDate: Wed, 14 Oct 2009 15:43:33 -0400
Committer:  Ingo Molnar <mingo@elte.hu>
CommitDate: Thu, 15 Oct 2009 10:42:35 +0200

perf tools: Fix backslash processing on trace print formats

The handling of backslashes was broken. It would stop parsing
when encountering one. Also, '\n', '\t', '\r' and '\\' were not
converted.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <20091014194357.521974680@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 tools/perf/util/trace-event-parse.c |   27 +++++++++++++++++++++++++--
 1 files changed, 25 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index a05c714..2b75ec2 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -522,7 +522,10 @@ static enum event_type __read_token(char **tok)
 			last_ch = ch;
 			ch = __read_char();
 			buf[i++] = ch;
-		} while (ch != quote_ch && last_ch != '\\');
+			/* the '\' '\' will cancel itself */
+			if (ch == '\\' && last_ch == '\\')
+				last_ch = 0;
+		} while (ch != quote_ch || last_ch == '\\');
 		/* remove the last quote */
 		i--;
 		goto out;
@@ -2325,7 +2328,27 @@ static void pretty_print(void *data, int size, struct event *event)
 
 	for (; *ptr; ptr++) {
 		ls = 0;
-		if (*ptr == '%') {
+		if (*ptr == '\\') {
+			ptr++;
+			switch (*ptr) {
+			case 'n':
+				printf("\n");
+				break;
+			case 't':
+				printf("\t");
+				break;
+			case 'r':
+				printf("\r");
+				break;
+			case '\\':
+				printf("\\");
+				break;
+			default:
+				printf("%c", *ptr);
+				break;
+			}
+
+		} else if (*ptr == '%') {
 			saveptr = ptr;
 			show_func = 0;
  cont_process:

[PATCH 03/13] [PATCH 03/13] perf tools: handle trace parsing of < and >

[Steven Rostedt]

[-- Attachment #1: 0003-perf-tools-handle-trace-parsing-of-and.patch --]
[-- Type: text/plain, Size: 868 bytes --]

From: Steven Rostedt <srostedt@redhat.com>

The code to handle the '<' and '>' ops was all in place, but
they were not in the switch statement to consider them as valid ops.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
---
 tools/perf/util/trace-event-parse.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index cae88de..8388238 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -1170,6 +1170,8 @@ process_op(struct event *event, struct print_arg *arg, char **tok)
 		   strcmp(token, "*") == 0 ||
 		   strcmp(token, "^") == 0 ||
 		   strcmp(token, "/") == 0 ||
+		   strcmp(token, "<") == 0 ||
+		   strcmp(token, ">") == 0 ||
 		   strcmp(token, "==") == 0 ||
 		   strcmp(token, "!=") == 0) {
 
-- 
1.6.3.3

[tip:perf/core] perf tools: Handle trace parsing of < and >

[tip-bot for Steven Rostedt]

Commit-ID:  298ebc3ef2a6c569b3eb51651f04e26aecbf8a1d
Gitweb:     http://git.kernel.org/tip/298ebc3ef2a6c569b3eb51651f04e26aecbf8a1d
Author:     Steven Rostedt <srostedt@redhat.com>
AuthorDate: Wed, 14 Oct 2009 15:43:34 -0400
Committer:  Ingo Molnar <mingo@elte.hu>
CommitDate: Thu, 15 Oct 2009 10:42:35 +0200

perf tools: Handle trace parsing of < and >

The code to handle the '<' and '>' ops was all in place, but
they were not in the switch statement to consider them as valid
ops.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <20091014194357.807434040@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 tools/perf/util/trace-event-parse.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index 2b75ec2..3e643f5 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -1170,6 +1170,8 @@ process_op(struct event *event, struct print_arg *arg, char **tok)
 		   strcmp(token, "*") == 0 ||
 		   strcmp(token, "^") == 0 ||
 		   strcmp(token, "/") == 0 ||
+		   strcmp(token, "<") == 0 ||
+		   strcmp(token, ">") == 0 ||
 		   strcmp(token, "==") == 0 ||
 		   strcmp(token, "!=") == 0) {
 

[PATCH 04/13] [PATCH 04/13] perf tools: handle arrays in print fields for trace parsing

[Steven Rostedt]

[-- Attachment #1: 0004-perf-tools-handle-arrays-in-print-fields-for-trace-p.patch --]
[-- Type: text/plain, Size: 2945 bytes --]

From: Steven Rostedt <srostedt@redhat.com>

The array used by the ftrace stack events (caller[x]) causes issues with
the parser. This adds code to handle the case, but it also assumes
that the array is of type long.

Note, this is a special case used (currently) only by the ftrace
user and kernel stack records.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
---
 tools/perf/util/trace-event-parse.c |   62 +++++++++++++++++++++++++++++++++++
 1 files changed, 62 insertions(+), 0 deletions(-)

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index 8388238..374843c 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -1046,6 +1046,35 @@ out_free:
 	return EVENT_ERROR;
 }
 
+static enum event_type
+process_array(struct event *event, struct print_arg *top, char **tok)
+{
+	struct print_arg *arg;
+	enum event_type type;
+	char *token = NULL;
+
+	arg = malloc_or_die(sizeof(*arg));
+	memset(arg, 0, sizeof(*arg));
+
+	*tok = NULL;
+	type = process_arg(event, arg, &token);
+	if (test_type_token(type, token, EVENT_OP, (char *)"]"))
+		goto out_free;
+
+	top->op.right = arg;
+
+	free_token(token);
+	type = read_token_item(&token);
+	*tok = token;
+
+	return type;
+
+out_free:
+	free_token(*tok);
+	free_arg(arg);
+	return EVENT_ERROR;
+}
+
 static int get_op_prio(char *op)
 {
 	if (!op[1]) {
@@ -1192,6 +1221,18 @@ process_op(struct event *event, struct print_arg *arg, char **tok)
 
 		arg->op.right = right;
 
+	} else if (strcmp(token, "[") == 0) {
+
+		left = malloc_or_die(sizeof(*left));
+		*left = *arg;
+
+		arg->type = PRINT_OP;
+		arg->op.op = token;
+		arg->op.left = left;
+
+		arg->op.prio = 0;
+		type = process_array(event, arg, tok);
+
 	} else {
 		die("unknown op '%s'", token);
 		/* the arg is now the left side */
@@ -1931,6 +1972,7 @@ static unsigned long long eval_num_arg(void *data, int size,
 {
 	unsigned long long val = 0;
 	unsigned long long left, right;
+	struct print_arg *larg;
 
 	switch (arg->type) {
 	case PRINT_NULL:
@@ -1957,6 +1999,26 @@ static unsigned long long eval_num_arg(void *data, int size,
 		return 0;
 		break;
 	case PRINT_OP:
+		if (strcmp(arg->op.op, "[") == 0) {
+			/*
+			 * Arrays are special, since we don't want
+			 * to read the arg as is.
+			 */
+			if (arg->op.left->type != PRINT_FIELD)
+				goto default_op; /* oops, all bets off */
+			larg = arg->op.left;
+			if (!larg->field.field) {
+				larg->field.field =
+					find_any_field(event, larg->field.name);
+				if (!larg->field.field)
+					die("field %s not found", larg->field.name);
+			}
+			right = eval_num_arg(data, size, event, arg->op.right);
+			val = read_size(data + larg->field.field->offset +
+					right * long_size, long_size);
+			break;
+		}
+ default_op:
 		left = eval_num_arg(data, size, event, arg->op.left);
 		right = eval_num_arg(data, size, event, arg->op.right);
 		switch (arg->op.op[0]) {
-- 
1.6.3.3

[tip:perf/core] perf tools: Handle arrays in print fields for trace parsing

[tip-bot for Steven Rostedt]

Commit-ID:  0959b8d65ce26131c2d5ccfa518a7b76529280fa
Gitweb:     http://git.kernel.org/tip/0959b8d65ce26131c2d5ccfa518a7b76529280fa
Author:     Steven Rostedt <srostedt@redhat.com>
AuthorDate: Wed, 14 Oct 2009 15:43:35 -0400
Committer:  Ingo Molnar <mingo@elte.hu>
CommitDate: Thu, 15 Oct 2009 10:42:36 +0200

perf tools: Handle arrays in print fields for trace parsing

The array used by the ftrace stack events (caller[x]) causes
issues with the parser. This adds code to handle the case, but
it also assumes that the array is of type long.

Note, this is a special case used (currently) only by the ftrace
user and kernel stack records.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <20091014194358.124833639@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 tools/perf/util/trace-event-parse.c |   62 +++++++++++++++++++++++++++++++++++
 1 files changed, 62 insertions(+), 0 deletions(-)

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index 3e643f5..7aeedb0 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -1046,6 +1046,35 @@ out_free:
 	return EVENT_ERROR;
 }
 
+static enum event_type
+process_array(struct event *event, struct print_arg *top, char **tok)
+{
+	struct print_arg *arg;
+	enum event_type type;
+	char *token = NULL;
+
+	arg = malloc_or_die(sizeof(*arg));
+	memset(arg, 0, sizeof(*arg));
+
+	*tok = NULL;
+	type = process_arg(event, arg, &token);
+	if (test_type_token(type, token, EVENT_OP, (char *)"]"))
+		goto out_free;
+
+	top->op.right = arg;
+
+	free_token(token);
+	type = read_token_item(&token);
+	*tok = token;
+
+	return type;
+
+out_free:
+	free_token(*tok);
+	free_arg(arg);
+	return EVENT_ERROR;
+}
+
 static int get_op_prio(char *op)
 {
 	if (!op[1]) {
@@ -1192,6 +1221,18 @@ process_op(struct event *event, struct print_arg *arg, char **tok)
 
 		arg->op.right = right;
 
+	} else if (strcmp(token, "[") == 0) {
+
+		left = malloc_or_die(sizeof(*left));
+		*left = *arg;
+
+		arg->type = PRINT_OP;
+		arg->op.op = token;
+		arg->op.left = left;
+
+		arg->op.prio = 0;
+		type = process_array(event, arg, tok);
+
 	} else {
 		die("unknown op '%s'", token);
 		/* the arg is now the left side */
@@ -1931,6 +1972,7 @@ static unsigned long long eval_num_arg(void *data, int size,
 {
 	unsigned long long val = 0;
 	unsigned long long left, right;
+	struct print_arg *larg;
 
 	switch (arg->type) {
 	case PRINT_NULL:
@@ -1957,6 +1999,26 @@ static unsigned long long eval_num_arg(void *data, int size,
 		return 0;
 		break;
 	case PRINT_OP:
+		if (strcmp(arg->op.op, "[") == 0) {
+			/*
+			 * Arrays are special, since we don't want
+			 * to read the arg as is.
+			 */
+			if (arg->op.left->type != PRINT_FIELD)
+				goto default_op; /* oops, all bets off */
+			larg = arg->op.left;
+			if (!larg->field.field) {
+				larg->field.field =
+					find_any_field(event, larg->field.name);
+				if (!larg->field.field)
+					die("field %s not found", larg->field.name);
+			}
+			right = eval_num_arg(data, size, event, arg->op.right);
+			val = read_size(data + larg->field.field->offset +
+					right * long_size, long_size);
+			break;
+		}
+ default_op:
 		left = eval_num_arg(data, size, event, arg->op.left);
 		right = eval_num_arg(data, size, event, arg->op.right);
 		switch (arg->op.op[0]) {

[PATCH 05/13] [PATCH 05/13] perf tools: handle * as typecast in trace parsing

[Steven Rostedt]

[-- Attachment #1: 0005-perf-tools-handle-as-typecast-in-trace-parsing.patch --]
[-- Type: text/plain, Size: 2789 bytes --]

From: Steven Rostedt <srostedt@redhat.com>

The '*' is currently only treated as a multiplication, and it needs
to be handled as a typecast pointer.

This is the version used by trace-cmd.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
---
 tools/perf/util/trace-event-parse.c |   50 +++++++++++++++-------------------
 1 files changed, 22 insertions(+), 28 deletions(-)

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index 374843c..d8c86f1 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -1217,7 +1217,24 @@ process_op(struct event *event, struct print_arg *arg, char **tok)
 
 		right = malloc_or_die(sizeof(*right));
 
-		type = process_arg(event, right, tok);
+		type = read_token_item(&token);
+		*tok = token;
+
+		/* could just be a type pointer */
+		if ((strcmp(arg->op.op, "*") == 0) &&
+		    type == EVENT_DELIM && (strcmp(token, ")") == 0)) {
+			if (left->type != PRINT_ATOM)
+				die("bad pointer type");
+			left->atom.atom = realloc(left->atom.atom,
+					    sizeof(left->atom.atom) + 3);
+			strcat(left->atom.atom, " *");
+			*arg = *left;
+			free(arg);
+
+			return type;
+		}
+
+		type = process_arg_token(event, right, tok, type);
 
 		arg->op.right = right;
 
@@ -1548,7 +1565,6 @@ process_paren(struct event *event, struct print_arg *arg, char **tok)
 {
 	struct print_arg *item_arg;
 	enum event_type type;
-	int ptr_cast = 0;
 	char *token;
 
 	type = process_arg(event, arg, &token);
@@ -1556,26 +1572,11 @@ process_paren(struct event *event, struct print_arg *arg, char **tok)
 	if (type == EVENT_ERROR)
 		return EVENT_ERROR;
 
-	if (type == EVENT_OP) {
-		/* handle the ptr casts */
-		if (!strcmp(token, "*")) {
-			/*
-			 * FIXME: should we zapp whitespaces before ')' ?
-			 * (may require a peek_token_item())
-			 */
-			if (__peek_char() == ')') {
-				ptr_cast = 1;
-				free_token(token);
-				type = read_token_item(&token);
-			}
-		}
-		if (!ptr_cast) {
-			type = process_op(event, arg, &token);
+	if (type == EVENT_OP)
+		type = process_op(event, arg, &token);
 
-			if (type == EVENT_ERROR)
-				return EVENT_ERROR;
-		}
-	}
+	if (type == EVENT_ERROR)
+		return EVENT_ERROR;
 
 	if (test_type_token(type, token, EVENT_DELIM, (char *)")")) {
 		free_token(token);
@@ -1601,13 +1602,6 @@ process_paren(struct event *event, struct print_arg *arg, char **tok)
 		item_arg = malloc_or_die(sizeof(*item_arg));
 
 		arg->type = PRINT_TYPE;
-		if (ptr_cast) {
-			char *old = arg->atom.atom;
-
-			arg->atom.atom = malloc_or_die(strlen(old + 3));
-			sprintf(arg->atom.atom, "%s *", old);
-			free(old);
-		}
 		arg->typecast.type = arg->atom.atom;
 		arg->typecast.item = item_arg;
 		type = process_arg_token(event, item_arg, &token, type);
-- 
1.6.3.3

[tip:perf/core] perf tools: Handle * as typecast in trace parsing

[tip-bot for Steven Rostedt]

Commit-ID:  b99af874829cba2b30d212bc6fd31b56275ee4d2
Gitweb:     http://git.kernel.org/tip/b99af874829cba2b30d212bc6fd31b56275ee4d2
Author:     Steven Rostedt <srostedt@redhat.com>
AuthorDate: Wed, 14 Oct 2009 15:43:36 -0400
Committer:  Ingo Molnar <mingo@elte.hu>
CommitDate: Thu, 15 Oct 2009 10:42:36 +0200

perf tools: Handle * as typecast in trace parsing

The '*' is currently only treated as a multiplication, and it
needs to be handled as a typecast pointer.

This is the version used by trace-cmd.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <20091014194358.409327875@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 tools/perf/util/trace-event-parse.c |   50 +++++++++++++++-------------------
 1 files changed, 22 insertions(+), 28 deletions(-)

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index 7aeedb0..f73ee55 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -1217,7 +1217,24 @@ process_op(struct event *event, struct print_arg *arg, char **tok)
 
 		right = malloc_or_die(sizeof(*right));
 
-		type = process_arg(event, right, tok);
+		type = read_token_item(&token);
+		*tok = token;
+
+		/* could just be a type pointer */
+		if ((strcmp(arg->op.op, "*") == 0) &&
+		    type == EVENT_DELIM && (strcmp(token, ")") == 0)) {
+			if (left->type != PRINT_ATOM)
+				die("bad pointer type");
+			left->atom.atom = realloc(left->atom.atom,
+					    sizeof(left->atom.atom) + 3);
+			strcat(left->atom.atom, " *");
+			*arg = *left;
+			free(arg);
+
+			return type;
+		}
+
+		type = process_arg_token(event, right, tok, type);
 
 		arg->op.right = right;
 
@@ -1548,7 +1565,6 @@ process_paren(struct event *event, struct print_arg *arg, char **tok)
 {
 	struct print_arg *item_arg;
 	enum event_type type;
-	int ptr_cast = 0;
 	char *token;
 
 	type = process_arg(event, arg, &token);
@@ -1556,26 +1572,11 @@ process_paren(struct event *event, struct print_arg *arg, char **tok)
 	if (type == EVENT_ERROR)
 		return EVENT_ERROR;
 
-	if (type == EVENT_OP) {
-		/* handle the ptr casts */
-		if (!strcmp(token, "*")) {
-			/*
-			 * FIXME: should we zapp whitespaces before ')' ?
-			 * (may require a peek_token_item())
-			 */
-			if (__peek_char() == ')') {
-				ptr_cast = 1;
-				free_token(token);
-				type = read_token_item(&token);
-			}
-		}
-		if (!ptr_cast) {
-			type = process_op(event, arg, &token);
+	if (type == EVENT_OP)
+		type = process_op(event, arg, &token);
 
-			if (type == EVENT_ERROR)
-				return EVENT_ERROR;
-		}
-	}
+	if (type == EVENT_ERROR)
+		return EVENT_ERROR;
 
 	if (test_type_token(type, token, EVENT_DELIM, (char *)")")) {
 		free_token(token);
@@ -1601,13 +1602,6 @@ process_paren(struct event *event, struct print_arg *arg, char **tok)
 		item_arg = malloc_or_die(sizeof(*item_arg));
 
 		arg->type = PRINT_TYPE;
-		if (ptr_cast) {
-			char *old = arg->atom.atom;
-
-			arg->atom.atom = malloc_or_die(strlen(old + 3));
-			sprintf(arg->atom.atom, "%s *", old);
-			free(old);
-		}
 		arg->typecast.type = arg->atom.atom;
 		arg->typecast.item = item_arg;
 		type = process_arg_token(event, item_arg, &token, type);

[PATCH 06/13] [PATCH 06/13] perf tools: handle newlines in trace parsing better

[Steven Rostedt]

[-- Attachment #1: 0006-perf-tools-handle-newlines-in-trace-parsing-better.patch --]
[-- Type: text/plain, Size: 998 bytes --]

From: Steven Rostedt <srostedt@redhat.com>

New lines between args in the trace format can break the parsing.
This should not be the case.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
---
 tools/perf/util/trace-event-parse.c |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index d8c86f1..5dba81d 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -1716,12 +1716,18 @@ process_arg_token(struct event *event, struct print_arg *arg,
 
 static int event_read_print_args(struct event *event, struct print_arg **list)
 {
-	enum event_type type;
+	enum event_type type = EVENT_ERROR;
 	struct print_arg *arg;
 	char *token;
 	int args = 0;
 
 	do {
+		if (type == EVENT_NEWLINE) {
+			free_token(token);
+			type = read_token_item(&token);
+			continue;
+		}
+
 		arg = malloc_or_die(sizeof(*arg));
 		memset(arg, 0, sizeof(*arg));
 
-- 
1.6.3.3

[tip:perf/core] perf tools: Handle newlines in trace parsing better

[tip-bot for Steven Rostedt]

Commit-ID:  f1d1feecf07261d083859ecfef0d4399036f9683
Gitweb:     http://git.kernel.org/tip/f1d1feecf07261d083859ecfef0d4399036f9683
Author:     Steven Rostedt <srostedt@redhat.com>
AuthorDate: Wed, 14 Oct 2009 15:43:37 -0400
Committer:  Ingo Molnar <mingo@elte.hu>
CommitDate: Thu, 15 Oct 2009 10:42:37 +0200

perf tools: Handle newlines in trace parsing better

New lines between args in the trace format can break the
parsing. This should not be the case.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <20091014194358.637991808@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 tools/perf/util/trace-event-parse.c |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index f73ee55..59e4e4d 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -1716,12 +1716,18 @@ process_arg_token(struct event *event, struct print_arg *arg,
 
 static int event_read_print_args(struct event *event, struct print_arg **list)
 {
-	enum event_type type;
+	enum event_type type = EVENT_ERROR;
 	struct print_arg *arg;
 	char *token;
 	int args = 0;
 
 	do {
+		if (type == EVENT_NEWLINE) {
+			free_token(token);
+			type = read_token_item(&token);
+			continue;
+		}
+
 		arg = malloc_or_die(sizeof(*arg));
 		memset(arg, 0, sizeof(*arg));
 

[PATCH 07/13] [PATCH 07/13] perf tools: handle the case with and without the "signed" trace field

[Steven Rostedt]

[-- Attachment #1: 0007-perf-tools-handle-the-case-with-and-without-the-sign.patch --]
[-- Type: text/plain, Size: 3911 bytes --]

From: Steven Rostedt <srostedt@redhat.com>

The trace format files now have a "signed" field. But we should still
be able to handle the kernels that do not have this field.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
---
 tools/perf/util/trace-event-parse.c |   81 ++++++++++++++++++++++------------
 1 files changed, 52 insertions(+), 29 deletions(-)

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index 5dba81d..6319bf2 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -924,23 +924,30 @@ static int event_read_fields(struct event *event, struct format_field **fields)
 		if (read_expected(EVENT_OP, (char *)";") < 0)
 			goto fail_expect;
 
-		if (read_expected(EVENT_ITEM, (char *)"signed") < 0)
-			goto fail_expect;
+		type = read_token(&token);
+		if (type != EVENT_NEWLINE) {
+			/* newer versions of the kernel have a "signed" type */
+			if (test_type_token(type, token, EVENT_ITEM, (char *)"signed"))
+				goto fail;
 
-		if (read_expected(EVENT_OP, (char *)":") < 0)
-			goto fail_expect;
+			free_token(token);
 
-		if (read_expect_type(EVENT_ITEM, &token))
-			goto fail;
-		if (strtoul(token, NULL, 0))
-			field->flags |= FIELD_IS_SIGNED;
-		free_token(token);
+			if (read_expected(EVENT_OP, (char *)":") < 0)
+				goto fail_expect;
 
-		if (read_expected(EVENT_OP, (char *)";") < 0)
-			goto fail_expect;
+			if (read_expect_type(EVENT_ITEM, &token))
+				goto fail;
+
+			/* add signed type */
+
+			free_token(token);
+			if (read_expected(EVENT_OP, (char *)";") < 0)
+				goto fail_expect;
+
+			if (read_expect_type(EVENT_NEWLINE, &token))
+				goto fail;
+		}
 
-		if (read_expect_type(EVENT_NEWLINE, &token) < 0)
-			goto fail;
 		free_token(token);
 
 		*fields = field;
@@ -2949,21 +2956,23 @@ static void print_args(struct print_arg *args)
 	}
 }
 
-static void parse_header_field(char *type,
+static void parse_header_field(char *field,
 			       int *offset, int *size)
 {
 	char *token;
+	int type;
 
 	if (read_expected(EVENT_ITEM, (char *)"field") < 0)
 		return;
 	if (read_expected(EVENT_OP, (char *)":") < 0)
 		return;
+
 	/* type */
 	if (read_expect_type(EVENT_ITEM, &token) < 0)
-		return;
+		goto fail;
 	free_token(token);
 
-	if (read_expected(EVENT_ITEM, type) < 0)
+	if (read_expected(EVENT_ITEM, field) < 0)
 		return;
 	if (read_expected(EVENT_OP, (char *)";") < 0)
 		return;
@@ -2972,7 +2981,7 @@ static void parse_header_field(char *type,
 	if (read_expected(EVENT_OP, (char *)":") < 0)
 		return;
 	if (read_expect_type(EVENT_ITEM, &token) < 0)
-		return;
+		goto fail;
 	*offset = atoi(token);
 	free_token(token);
 	if (read_expected(EVENT_OP, (char *)";") < 0)
@@ -2982,22 +2991,36 @@ static void parse_header_field(char *type,
 	if (read_expected(EVENT_OP, (char *)":") < 0)
 		return;
 	if (read_expect_type(EVENT_ITEM, &token) < 0)
-		return;
+		goto fail;
 	*size = atoi(token);
 	free_token(token);
 	if (read_expected(EVENT_OP, (char *)";") < 0)
 		return;
-	if (read_expected(EVENT_ITEM, (char *)"signed") < 0)
-		return;
-	if (read_expected(EVENT_OP, (char *)":") < 0)
-		return;
-	if (read_expect_type(EVENT_ITEM, &token) < 0)
-		return;
-	free_token(token);
-	if (read_expected(EVENT_OP, (char *)";") < 0)
-		return;
-	if (read_expect_type(EVENT_NEWLINE, &token) < 0)
-		return;
+	type = read_token(&token);
+	if (type != EVENT_NEWLINE) {
+		/* newer versions of the kernel have a "signed" type */
+		if (type != EVENT_ITEM)
+			goto fail;
+
+		if (strcmp(token, (char *)"signed") != 0)
+			goto fail;
+
+		free_token(token);
+
+		if (read_expected(EVENT_OP, (char *)":") < 0)
+			return;
+
+		if (read_expect_type(EVENT_ITEM, &token))
+			goto fail;
+
+		free_token(token);
+		if (read_expected(EVENT_OP, (char *)";") < 0)
+			return;
+
+		if (read_expect_type(EVENT_NEWLINE, &token))
+			goto fail;
+	}
+ fail:
 	free_token(token);
 }
 
-- 
1.6.3.3

[tip:perf/core] perf tools: Handle the case with and without the "signed" trace field

[tip-bot for Steven Rostedt]

Commit-ID:  13999e59343b042b0807be2df6ae5895d29782a0
Gitweb:     http://git.kernel.org/tip/13999e59343b042b0807be2df6ae5895d29782a0
Author:     Steven Rostedt <srostedt@redhat.com>
AuthorDate: Wed, 14 Oct 2009 15:43:38 -0400
Committer:  Ingo Molnar <mingo@elte.hu>
CommitDate: Thu, 15 Oct 2009 10:42:37 +0200

perf tools: Handle the case with and without the "signed" trace field

The trace format files now have a "signed" field. But we should
still be able to handle the kernels that do not have this field.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <20091014194358.888239553@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 tools/perf/util/trace-event-parse.c |   81 ++++++++++++++++++++++------------
 1 files changed, 52 insertions(+), 29 deletions(-)

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index 59e4e4d..0739b12 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -924,23 +924,30 @@ static int event_read_fields(struct event *event, struct format_field **fields)
 		if (read_expected(EVENT_OP, (char *)";") < 0)
 			goto fail_expect;
 
-		if (read_expected(EVENT_ITEM, (char *)"signed") < 0)
-			goto fail_expect;
+		type = read_token(&token);
+		if (type != EVENT_NEWLINE) {
+			/* newer versions of the kernel have a "signed" type */
+			if (test_type_token(type, token, EVENT_ITEM, (char *)"signed"))
+				goto fail;
 
-		if (read_expected(EVENT_OP, (char *)":") < 0)
-			goto fail_expect;
+			free_token(token);
 
-		if (read_expect_type(EVENT_ITEM, &token))
-			goto fail;
-		if (strtoul(token, NULL, 0))
-			field->flags |= FIELD_IS_SIGNED;
-		free_token(token);
+			if (read_expected(EVENT_OP, (char *)":") < 0)
+				goto fail_expect;
 
-		if (read_expected(EVENT_OP, (char *)";") < 0)
-			goto fail_expect;
+			if (read_expect_type(EVENT_ITEM, &token))
+				goto fail;
+
+			/* add signed type */
+
+			free_token(token);
+			if (read_expected(EVENT_OP, (char *)";") < 0)
+				goto fail_expect;
+
+			if (read_expect_type(EVENT_NEWLINE, &token))
+				goto fail;
+		}
 
-		if (read_expect_type(EVENT_NEWLINE, &token) < 0)
-			goto fail;
 		free_token(token);
 
 		*fields = field;
@@ -2949,21 +2956,23 @@ static void print_args(struct print_arg *args)
 	}
 }
 
-static void parse_header_field(char *type,
+static void parse_header_field(char *field,
 			       int *offset, int *size)
 {
 	char *token;
+	int type;
 
 	if (read_expected(EVENT_ITEM, (char *)"field") < 0)
 		return;
 	if (read_expected(EVENT_OP, (char *)":") < 0)
 		return;
+
 	/* type */
 	if (read_expect_type(EVENT_ITEM, &token) < 0)
-		return;
+		goto fail;
 	free_token(token);
 
-	if (read_expected(EVENT_ITEM, type) < 0)
+	if (read_expected(EVENT_ITEM, field) < 0)
 		return;
 	if (read_expected(EVENT_OP, (char *)";") < 0)
 		return;
@@ -2972,7 +2981,7 @@ static void parse_header_field(char *type,
 	if (read_expected(EVENT_OP, (char *)":") < 0)
 		return;
 	if (read_expect_type(EVENT_ITEM, &token) < 0)
-		return;
+		goto fail;
 	*offset = atoi(token);
 	free_token(token);
 	if (read_expected(EVENT_OP, (char *)";") < 0)
@@ -2982,22 +2991,36 @@ static void parse_header_field(char *type,
 	if (read_expected(EVENT_OP, (char *)":") < 0)
 		return;
 	if (read_expect_type(EVENT_ITEM, &token) < 0)
-		return;
+		goto fail;
 	*size = atoi(token);
 	free_token(token);
 	if (read_expected(EVENT_OP, (char *)";") < 0)
 		return;
-	if (read_expected(EVENT_ITEM, (char *)"signed") < 0)
-		return;
-	if (read_expected(EVENT_OP, (char *)":") < 0)
-		return;
-	if (read_expect_type(EVENT_ITEM, &token) < 0)
-		return;
-	free_token(token);
-	if (read_expected(EVENT_OP, (char *)";") < 0)
-		return;
-	if (read_expect_type(EVENT_NEWLINE, &token) < 0)
-		return;
+	type = read_token(&token);
+	if (type != EVENT_NEWLINE) {
+		/* newer versions of the kernel have a "signed" type */
+		if (type != EVENT_ITEM)
+			goto fail;
+
+		if (strcmp(token, (char *)"signed") != 0)
+			goto fail;
+
+		free_token(token);
+
+		if (read_expected(EVENT_OP, (char *)":") < 0)
+			return;
+
+		if (read_expect_type(EVENT_ITEM, &token))
+			goto fail;
+
+		free_token(token);
+		if (read_expected(EVENT_OP, (char *)";") < 0)
+			return;
+
+		if (read_expect_type(EVENT_NEWLINE, &token))
+			goto fail;
+	}
+ fail:
 	free_token(token);
 }
 

[PATCH 08/13] [PATCH 08/13] perf tools: still continue on failed parsing of an event

[Steven Rostedt]

[-- Attachment #1: 0008-perf-tools-still-continue-on-failed-parsing-of-an-ev.patch --]
[-- Type: text/plain, Size: 4133 bytes --]

From: Steven Rostedt <srostedt@redhat.com>

Even though an event may fail to parse, we should not kill the entire
report. The trace should still be able to show what it can.

If an event fails to parse, a warning is printed, and the output
continues.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
---
 tools/perf/util/trace-event-parse.c |   38 ++++++++++++++++++++++++----------
 tools/perf/util/trace-event.h       |   14 +++++++-----
 2 files changed, 35 insertions(+), 17 deletions(-)

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index 6319bf2..f970d75 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -613,7 +613,7 @@ static enum event_type read_token_item(char **tok)
 static int test_type(enum event_type type, enum event_type expect)
 {
 	if (type != expect) {
-		die("Error: expected type %d but read %d",
+		warning("Error: expected type %d but read %d",
 		    expect, type);
 		return -1;
 	}
@@ -624,13 +624,13 @@ static int test_type_token(enum event_type type, char *token,
 		    enum event_type expect, char *expect_tok)
 {
 	if (type != expect) {
-		die("Error: expected type %d but read %d",
+		warning("Error: expected type %d but read %d",
 		    expect, type);
 		return -1;
 	}
 
 	if (strcmp(token, expect_tok) != 0) {
-		die("Error: expected '%s' but read '%s'",
+		warning("Error: expected '%s' but read '%s'",
 		    expect_tok, token);
 		return -1;
 	}
@@ -668,7 +668,7 @@ static int __read_expected(enum event_type expect, char *str, int newline_ok)
 
 	free_token(token);
 
-	return 0;
+	return ret;
 }
 
 static int read_expected(enum event_type expect, char *str)
@@ -1258,12 +1258,12 @@ process_op(struct event *event, struct print_arg *arg, char **tok)
 		type = process_array(event, arg, tok);
 
 	} else {
-		die("unknown op '%s'", token);
+		warning("unknown op '%s'", token);
+		event->flags |= EVENT_FL_FAILED;
 		/* the arg is now the left side */
 		return EVENT_NONE;
 	}
 
-
 	if (type == EVENT_OP) {
 		int prio;
 
@@ -2873,7 +2873,7 @@ void print_event(int cpu, void *data, int size, unsigned long long nsecs,
 
 	event = trace_find_event(type);
 	if (!event) {
-		printf("ug! no event found for type %d\n", type);
+		warning("ug! no event found for type %d", type);
 		return;
 	}
 
@@ -2887,6 +2887,12 @@ void print_event(int cpu, void *data, int size, unsigned long long nsecs,
 	       comm, pid,  cpu,
 	       secs, nsecs, event->name);
 
+	if (event->flags & EVENT_FL_FAILED) {
+		printf("EVENT '%s' FAILED TO PARSE\n",
+		       event->name);
+		return;
+	}
+
 	pretty_print(data, size, event);
 	printf("\n");
 }
@@ -3120,12 +3126,16 @@ int parse_event_file(char *buf, unsigned long size, char *sys)
 		die("failed to read event id");
 
 	ret = event_read_format(event);
-	if (ret < 0)
-		die("failed to read event format");
+	if (ret < 0) {
+		warning("failed to read event format for %s", event->name);
+		goto event_failed;
+	}
 
 	ret = event_read_print(event);
-	if (ret < 0)
-		die("failed to read event print fmt");
+	if (ret < 0) {
+		warning("failed to read event print fmt for %s", event->name);
+		goto event_failed;
+	}
 
 	event->system = strdup(sys);
 
@@ -3135,6 +3145,12 @@ int parse_event_file(char *buf, unsigned long size, char *sys)
 
 	add_event(event);
 	return 0;
+
+ event_failed:
+	event->flags |= EVENT_FL_FAILED;
+	/* still add it even if it failed */
+	add_event(event);
+	return -1;
 }
 
 void parse_set_info(int nr_cpus, int long_sz)
diff --git a/tools/perf/util/trace-event.h b/tools/perf/util/trace-event.h
index da77e07..29821ac 100644
--- a/tools/perf/util/trace-event.h
+++ b/tools/perf/util/trace-event.h
@@ -139,12 +139,14 @@ struct event {
 };
 
 enum {
-	EVENT_FL_ISFTRACE	= 1,
-	EVENT_FL_ISPRINT	= 2,
-	EVENT_FL_ISBPRINT	= 4,
-	EVENT_FL_ISFUNC		= 8,
-	EVENT_FL_ISFUNCENT	= 16,
-	EVENT_FL_ISFUNCRET	= 32,
+	EVENT_FL_ISFTRACE	= 0x01,
+	EVENT_FL_ISPRINT	= 0x02,
+	EVENT_FL_ISBPRINT	= 0x04,
+	EVENT_FL_ISFUNC		= 0x08,
+	EVENT_FL_ISFUNCENT	= 0x10,
+	EVENT_FL_ISFUNCRET	= 0x20,
+
+	EVENT_FL_FAILED		= 0x80000000
 };
 
 struct record {
-- 
1.6.3.3

[tip:perf/core] perf tools: Still continue on failed parsing of an event

[tip-bot for Steven Rostedt]

Commit-ID:  07a4bdddcf2546ccfbfb3c782deab636c371edeb
Gitweb:     http://git.kernel.org/tip/07a4bdddcf2546ccfbfb3c782deab636c371edeb
Author:     Steven Rostedt <srostedt@redhat.com>
AuthorDate: Wed, 14 Oct 2009 15:43:39 -0400
Committer:  Ingo Molnar <mingo@elte.hu>
CommitDate: Thu, 15 Oct 2009 10:42:38 +0200

perf tools: Still continue on failed parsing of an event

Even though an event may fail to parse, we should not kill the
entire report. The trace should still be able to show what it
can.

If an event fails to parse, a warning is printed, and the output
continues.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <20091014194359.190809589@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 tools/perf/util/trace-event-parse.c |   38 ++++++++++++++++++++++++----------
 tools/perf/util/trace-event.h       |   14 +++++++-----
 2 files changed, 35 insertions(+), 17 deletions(-)

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index 0739b12..eda0a24 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -613,7 +613,7 @@ static enum event_type read_token_item(char **tok)
 static int test_type(enum event_type type, enum event_type expect)
 {
 	if (type != expect) {
-		die("Error: expected type %d but read %d",
+		warning("Error: expected type %d but read %d",
 		    expect, type);
 		return -1;
 	}
@@ -624,13 +624,13 @@ static int test_type_token(enum event_type type, char *token,
 		    enum event_type expect, const char *expect_tok)
 {
 	if (type != expect) {
-		die("Error: expected type %d but read %d",
+		warning("Error: expected type %d but read %d",
 		    expect, type);
 		return -1;
 	}
 
 	if (strcmp(token, expect_tok) != 0) {
-		die("Error: expected '%s' but read '%s'",
+		warning("Error: expected '%s' but read '%s'",
 		    expect_tok, token);
 		return -1;
 	}
@@ -668,7 +668,7 @@ static int __read_expected(enum event_type expect, const char *str, int newline_
 
 	free_token(token);
 
-	return 0;
+	return ret;
 }
 
 static int read_expected(enum event_type expect, const char *str)
@@ -1258,12 +1258,12 @@ process_op(struct event *event, struct print_arg *arg, char **tok)
 		type = process_array(event, arg, tok);
 
 	} else {
-		die("unknown op '%s'", token);
+		warning("unknown op '%s'", token);
+		event->flags |= EVENT_FL_FAILED;
 		/* the arg is now the left side */
 		return EVENT_NONE;
 	}
 
-
 	if (type == EVENT_OP) {
 		int prio;
 
@@ -2873,7 +2873,7 @@ void print_event(int cpu, void *data, int size, unsigned long long nsecs,
 
 	event = trace_find_event(type);
 	if (!event) {
-		printf("ug! no event found for type %d\n", type);
+		warning("ug! no event found for type %d", type);
 		return;
 	}
 
@@ -2887,6 +2887,12 @@ void print_event(int cpu, void *data, int size, unsigned long long nsecs,
 	       comm, pid,  cpu,
 	       secs, nsecs, event->name);
 
+	if (event->flags & EVENT_FL_FAILED) {
+		printf("EVENT '%s' FAILED TO PARSE\n",
+		       event->name);
+		return;
+	}
+
 	pretty_print(data, size, event);
 	printf("\n");
 }
@@ -3120,12 +3126,16 @@ int parse_event_file(char *buf, unsigned long size, char *sys)
 		die("failed to read event id");
 
 	ret = event_read_format(event);
-	if (ret < 0)
-		die("failed to read event format");
+	if (ret < 0) {
+		warning("failed to read event format for %s", event->name);
+		goto event_failed;
+	}
 
 	ret = event_read_print(event);
-	if (ret < 0)
-		die("failed to read event print fmt");
+	if (ret < 0) {
+		warning("failed to read event print fmt for %s", event->name);
+		goto event_failed;
+	}
 
 	event->system = strdup(sys);
 
@@ -3135,6 +3145,12 @@ int parse_event_file(char *buf, unsigned long size, char *sys)
 
 	add_event(event);
 	return 0;
+
+ event_failed:
+	event->flags |= EVENT_FL_FAILED;
+	/* still add it even if it failed */
+	add_event(event);
+	return -1;
 }
 
 void parse_set_info(int nr_cpus, int long_sz)
diff --git a/tools/perf/util/trace-event.h b/tools/perf/util/trace-event.h
index da77e07..29821ac 100644
--- a/tools/perf/util/trace-event.h
+++ b/tools/perf/util/trace-event.h
@@ -139,12 +139,14 @@ struct event {
 };
 
 enum {
-	EVENT_FL_ISFTRACE	= 1,
-	EVENT_FL_ISPRINT	= 2,
-	EVENT_FL_ISBPRINT	= 4,
-	EVENT_FL_ISFUNC		= 8,
-	EVENT_FL_ISFUNCENT	= 16,
-	EVENT_FL_ISFUNCRET	= 32,
+	EVENT_FL_ISFTRACE	= 0x01,
+	EVENT_FL_ISPRINT	= 0x02,
+	EVENT_FL_ISBPRINT	= 0x04,
+	EVENT_FL_ISFUNC		= 0x08,
+	EVENT_FL_ISFUNCENT	= 0x10,
+	EVENT_FL_ISFUNCRET	= 0x20,
+
+	EVENT_FL_FAILED		= 0x80000000
 };
 
 struct record {

[PATCH 09/13] [PATCH 09/13] perf tools: fix bprintk reading in trace output

[Steven Rostedt]

[-- Attachment #1: 0009-perf-tools-fix-bprintk-reading-in-trace-output.patch --]
[-- Type: text/plain, Size: 1664 bytes --]

From: Steven Rostedt <srostedt@redhat.com>

The bprintk parsing was broken in more ways than one.

The file parsing was incorrect, and the words used by the arguments
are always 4 bytes aligned, even on 64bit machines.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
---
 tools/perf/util/trace-event-parse.c |   15 +++++++--------
 1 files changed, 7 insertions(+), 8 deletions(-)

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index f970d75..5f64644 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -284,18 +284,16 @@ void parse_ftrace_printk(char *file, unsigned int size __unused)
 	char *line;
 	char *next = NULL;
 	char *addr_str;
-	int ret;
+	char *fmt;
 	int i;
 
 	line = strtok_r(file, "\n", &next);
 	while (line) {
 		item = malloc_or_die(sizeof(*item));
-		ret = sscanf(line, "%as : %as",
-			     (float *)(void *)&addr_str, /* workaround gcc warning */
-			     (float *)(void *)&item->printk);
+		addr_str = strtok_r(line, ":", &fmt);
 		item->addr = strtoull(addr_str, NULL, 16);
-		free(addr_str);
-
+		/* fmt still has a space, skip it */
+		item->printk = strdup(fmt+1);
 		item->next = list;
 		list = item;
 		line = strtok_r(NULL, "\n", &next);
@@ -2274,8 +2272,9 @@ static struct print_arg *make_bprint_args(char *fmt, void *data, int size, struc
 			case 'u':
 			case 'x':
 			case 'i':
-				bptr = (void *)(((unsigned long)bptr + (long_size - 1)) &
-						~(long_size - 1));
+				/* the pointers are always 4 bytes aligned */
+				bptr = (void *)(((unsigned long)bptr + 3) &
+						~3);
 				switch (ls) {
 				case 0:
 				case 1:
-- 
1.6.3.3

[tip:perf/core] perf tools: Fix bprintk reading in trace output

[tip-bot for Steven Rostedt]

Commit-ID:  ffa1895561645103d8f8059b35d9c06e6eeead2e
Gitweb:     http://git.kernel.org/tip/ffa1895561645103d8f8059b35d9c06e6eeead2e
Author:     Steven Rostedt <srostedt@redhat.com>
AuthorDate: Wed, 14 Oct 2009 15:43:40 -0400
Committer:  Ingo Molnar <mingo@elte.hu>
CommitDate: Thu, 15 Oct 2009 10:42:38 +0200

perf tools: Fix bprintk reading in trace output

The bprintk parsing was broken in more ways than one.

The file parsing was incorrect, and the words used by the
arguments are always 4 bytes aligned, even on 64-bit machines.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <20091014194359.520931637@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 tools/perf/util/trace-event-parse.c |   15 +++++++--------
 1 files changed, 7 insertions(+), 8 deletions(-)

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index eda0a24..93a82fe 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -284,18 +284,16 @@ void parse_ftrace_printk(char *file, unsigned int size __unused)
 	char *line;
 	char *next = NULL;
 	char *addr_str;
-	int ret;
+	char *fmt;
 	int i;
 
 	line = strtok_r(file, "\n", &next);
 	while (line) {
 		item = malloc_or_die(sizeof(*item));
-		ret = sscanf(line, "%as : %as",
-			     (float *)(void *)&addr_str, /* workaround gcc warning */
-			     (float *)(void *)&item->printk);
+		addr_str = strtok_r(line, ":", &fmt);
 		item->addr = strtoull(addr_str, NULL, 16);
-		free(addr_str);
-
+		/* fmt still has a space, skip it */
+		item->printk = strdup(fmt+1);
 		item->next = list;
 		list = item;
 		line = strtok_r(NULL, "\n", &next);
@@ -2274,8 +2272,9 @@ static struct print_arg *make_bprint_args(char *fmt, void *data, int size, struc
 			case 'u':
 			case 'x':
 			case 'i':
-				bptr = (void *)(((unsigned long)bptr + (long_size - 1)) &
-						~(long_size - 1));
+				/* the pointers are always 4 bytes aligned */
+				bptr = (void *)(((unsigned long)bptr + 3) &
+						~3);
 				switch (ls) {
 				case 0:
 				case 1:

[PATCH 10/13] [PATCH 10/13] perf tools: handle both versions of ftrace output

[Steven Rostedt]

[-- Attachment #1: 0010-perf-tools-handle-both-versions-of-ftrace-output.patch --]
[-- Type: text/plain, Size: 999 bytes --]

From: Steven Rostedt <srostedt@redhat.com>

The ftrace output events can have either arguments or no arguments.
The parser needs to be able to handle both.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
---
 tools/perf/util/trace-event-parse.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index 5f64644..6c3cb0a 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -1819,7 +1819,7 @@ static int event_read_print(struct event *event)
 	if (ret < 0)
 		return -1;
 
-	return 0;
+	return ret;
 
  fail:
 	free_token(token);
@@ -3088,6 +3088,9 @@ int parse_ftrace_file(char *buf, unsigned long size)
 	if (ret < 0)
 		die("failed to read ftrace event print fmt");
 
+	/* New ftrace handles args */
+	if (ret > 0)
+		return 0;
 	/*
 	 * The arguments for ftrace files are parsed by the fields.
 	 * Set up the fields as their arguments.
-- 
1.6.3.3

[tip:perf/core] perf tools: Handle both versions of ftrace output

[tip-bot for Steven Rostedt]

Commit-ID:  0d1da915c76838c9ee7af7cdefbcb2bae9424161
Gitweb:     http://git.kernel.org/tip/0d1da915c76838c9ee7af7cdefbcb2bae9424161
Author:     Steven Rostedt <srostedt@redhat.com>
AuthorDate: Wed, 14 Oct 2009 15:43:41 -0400
Committer:  Ingo Molnar <mingo@elte.hu>
CommitDate: Thu, 15 Oct 2009 10:42:39 +0200

perf tools: Handle both versions of ftrace output

The ftrace output events can have either arguments or no
arguments. The parser needs to be able to handle both.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <20091014194359.790221427@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 tools/perf/util/trace-event-parse.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index 93a82fe..c174765 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -1819,7 +1819,7 @@ static int event_read_print(struct event *event)
 	if (ret < 0)
 		return -1;
 
-	return 0;
+	return ret;
 
  fail:
 	free_token(token);
@@ -3088,6 +3088,9 @@ int parse_ftrace_file(char *buf, unsigned long size)
 	if (ret < 0)
 		die("failed to read ftrace event print fmt");
 
+	/* New ftrace handles args */
+	if (ret > 0)
+		return 0;
 	/*
 	 * The arguments for ftrace files are parsed by the fields.
 	 * Set up the fields as their arguments.

[PATCH 11/13] [PATCH 11/13] perf tools: add latency format to trace output

[Steven Rostedt]

[-- Attachment #1: 0011-perf-tools-add-latency-format-to-trace-output.patch --]
[-- Type: text/plain, Size: 6579 bytes --]

From: Steven Rostedt <srostedt@redhat.com>

Add the irqs disabled, preemption count, need resched, and other
info that is shown in the latency format of ftrace.

 # perf trace -l
    perf-16457   2..s2. 53636.260344: kmem_cache_free: call_site=ffffffff811198f
    perf-16457   2..s2. 53636.264330: kmem_cache_free: call_site=ffffffff811198f
    perf-16457   2d.s4. 53636.300006: kmem_cache_free: call_site=ffffffff810d889

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
---
 tools/perf/builtin-trace.c          |    2 +
 tools/perf/util/trace-event-parse.c |  120 +++++++++++++++++++++++++++++------
 tools/perf/util/trace-event.h       |   11 +++
 3 files changed, 114 insertions(+), 19 deletions(-)

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index ccf867d..ce8459a 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -144,6 +144,8 @@ static const struct option options[] = {
 		    "dump raw trace in ASCII"),
 	OPT_BOOLEAN('v', "verbose", &verbose,
 		    "be more verbose (show symbol address, etc)"),
+	OPT_BOOLEAN('l', "latency", &latency_format,
+		    "show latency attributes (irqs/preemption disabled, etc)"),
 	OPT_END()
 };
 
diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index 6c3cb0a..d3b0b2a 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -40,6 +40,8 @@ int header_page_size_size;
 int header_page_data_offset;
 int header_page_data_size;
 
+int latency_format;
+
 static char *input_buf;
 static unsigned long long input_buf_ptr;
 static unsigned long long input_buf_siz;
@@ -1928,37 +1930,67 @@ static int get_common_info(const char *type, int *offset, int *size)
 	return 0;
 }
 
-int trace_parse_common_type(void *data)
+static int __parse_common(void *data, int *size, int *offset,
+			  char *name)
 {
-	static int type_offset;
-	static int type_size;
 	int ret;
 
-	if (!type_size) {
-		ret = get_common_info("common_type",
-				      &type_offset,
-				      &type_size);
+	if (!*size) {
+		ret = get_common_info(name, offset, size);
 		if (ret < 0)
 			return ret;
 	}
-	return read_size(data + type_offset, type_size);
+	return read_size(data + *offset, *size);
+}
+
+int trace_parse_common_type(void *data)
+{
+	static int type_offset;
+	static int type_size;
+
+	return __parse_common(data, &type_size, &type_offset,
+			      (char *)"common_type");
 }
 
 static int parse_common_pid(void *data)
 {
 	static int pid_offset;
 	static int pid_size;
+
+	return __parse_common(data, &pid_size, &pid_offset,
+			      (char *)"common_pid");
+}
+
+static int parse_common_pc(void *data)
+{
+	static int pc_offset;
+	static int pc_size;
+
+	return __parse_common(data, &pc_size, &pc_offset,
+			      (char *)"common_preempt_count");
+}
+
+static int parse_common_flags(void *data)
+{
+	static int flags_offset;
+	static int flags_size;
+
+	return __parse_common(data, &flags_size, &flags_offset,
+			      (char *)"common_flags");
+}
+
+static int parse_common_lock_depth(void *data)
+{
+	static int ld_offset;
+	static int ld_size;
 	int ret;
 
-	if (!pid_size) {
-		ret = get_common_info("common_pid",
-				      &pid_offset,
-				      &pid_size);
-		if (ret < 0)
-			return ret;
-	}
+	ret = __parse_common(data, &ld_size, &ld_offset,
+			     (char *)"common_lock_depth");
+	if (ret < 0)
+		return -1;
 
-	return read_size(data + pid_offset, pid_size);
+	return ret;
 }
 
 struct event *trace_find_event(int id)
@@ -2525,6 +2557,41 @@ static inline int log10_cpu(int nb)
 	return 1;
 }
 
+static void print_lat_fmt(void *data, int size __unused)
+{
+	unsigned int lat_flags;
+	unsigned int pc;
+	int lock_depth;
+	int hardirq;
+	int softirq;
+
+	lat_flags = parse_common_flags(data);
+	pc = parse_common_pc(data);
+	lock_depth = parse_common_lock_depth(data);
+
+	hardirq = lat_flags & TRACE_FLAG_HARDIRQ;
+	softirq = lat_flags & TRACE_FLAG_SOFTIRQ;
+
+	printf("%c%c%c",
+	       (lat_flags & TRACE_FLAG_IRQS_OFF) ? 'd' :
+	       (lat_flags & TRACE_FLAG_IRQS_NOSUPPORT) ?
+	       'X' : '.',
+	       (lat_flags & TRACE_FLAG_NEED_RESCHED) ?
+	       'N' : '.',
+	       (hardirq && softirq) ? 'H' :
+	       hardirq ? 'h' : softirq ? 's' : '.');
+
+	if (pc)
+		printf("%x", pc);
+	else
+		printf(".");
+
+	if (lock_depth < 0)
+		printf(".");
+	else
+		printf("%d", lock_depth);
+}
+
 /* taken from Linux, written by Frederic Weisbecker */
 static void print_graph_cpu(int cpu)
 {
@@ -2768,6 +2835,11 @@ pretty_print_func_ent(void *data, int size, struct event *event,
 
 	printf(" | ");
 
+	if (latency_format) {
+		print_lat_fmt(data, size);
+		printf(" | ");
+	}
+
 	field = find_field(event, "func");
 	if (!field)
 		die("function entry does not have func field");
@@ -2811,6 +2883,11 @@ pretty_print_func_ret(void *data, int size __unused, struct event *event,
 
 	printf(" | ");
 
+	if (latency_format) {
+		print_lat_fmt(data, size);
+		printf(" | ");
+	}
+
 	field = find_field(event, "rettime");
 	if (!field)
 		die("can't find rettime in return graph");
@@ -2882,9 +2959,14 @@ void print_event(int cpu, void *data, int size, unsigned long long nsecs,
 		return pretty_print_func_graph(data, size, event, cpu,
 					       pid, comm, secs, usecs);
 
-	printf("%16s-%-5d [%03d] %5lu.%09Lu: %s: ",
-	       comm, pid,  cpu,
-	       secs, nsecs, event->name);
+	if (latency_format) {
+		printf("%8.8s-%-5d %3d",
+		       comm, pid, cpu);
+		print_lat_fmt(data, size);
+	} else
+		printf("%16s-%-5d [%03d]", comm, pid,  cpu);
+
+	printf(" %5lu.%06lu: %s: ", secs, usecs, event->name);
 
 	if (event->flags & EVENT_FL_FAILED) {
 		printf("EVENT '%s' FAILED TO PARSE\n",
diff --git a/tools/perf/util/trace-event.h b/tools/perf/util/trace-event.h
index 29821ac..f6637c2 100644
--- a/tools/perf/util/trace-event.h
+++ b/tools/perf/util/trace-event.h
@@ -239,6 +239,8 @@ extern int header_page_size_size;
 extern int header_page_data_offset;
 extern int header_page_data_size;
 
+extern int latency_format;
+
 int parse_header_page(char *buf, unsigned long size);
 int trace_parse_common_type(void *data);
 struct event *trace_find_event(int id);
@@ -248,4 +250,13 @@ void *raw_field_ptr(struct event *event, const char *name, void *data);
 
 void read_tracing_data(int fd, struct perf_event_attr *pattrs, int nb_events);
 
+/* taken from kernel/trace/trace.h */
+enum trace_flag_type {
+	TRACE_FLAG_IRQS_OFF		= 0x01,
+	TRACE_FLAG_IRQS_NOSUPPORT	= 0x02,
+	TRACE_FLAG_NEED_RESCHED		= 0x04,
+	TRACE_FLAG_HARDIRQ		= 0x08,
+	TRACE_FLAG_SOFTIRQ		= 0x10,
+};
+
 #endif /* __PERF_TRACE_EVENTS_H */
-- 
1.6.3.3

[tip:perf/core] perf tools: Add latency format to trace output

[tip-bot for Steven Rostedt]

Commit-ID:  cda48461c7fb8431a99b7960480f5f42cc1a5324
Gitweb:     http://git.kernel.org/tip/cda48461c7fb8431a99b7960480f5f42cc1a5324
Author:     Steven Rostedt <srostedt@redhat.com>
AuthorDate: Wed, 14 Oct 2009 15:43:42 -0400
Committer:  Ingo Molnar <mingo@elte.hu>
CommitDate: Thu, 15 Oct 2009 10:42:39 +0200

perf tools: Add latency format to trace output

Add the irqs disabled, preemption count, need resched, and other
info that is shown in the latency format of ftrace.

 # perf trace -l
    perf-16457   2..s2. 53636.260344: kmem_cache_free: call_site=ffffffff811198f
    perf-16457   2..s2. 53636.264330: kmem_cache_free: call_site=ffffffff811198f
    perf-16457   2d.s4. 53636.300006: kmem_cache_free: call_site=ffffffff810d889

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <20091014194400.076588953@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 tools/perf/builtin-trace.c          |    2 +
 tools/perf/util/trace-event-parse.c |  120 +++++++++++++++++++++++++++++------
 tools/perf/util/trace-event.h       |   11 +++
 3 files changed, 114 insertions(+), 19 deletions(-)

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index ccf867d..ce8459a 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -144,6 +144,8 @@ static const struct option options[] = {
 		    "dump raw trace in ASCII"),
 	OPT_BOOLEAN('v', "verbose", &verbose,
 		    "be more verbose (show symbol address, etc)"),
+	OPT_BOOLEAN('l', "latency", &latency_format,
+		    "show latency attributes (irqs/preemption disabled, etc)"),
 	OPT_END()
 };
 
diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index c174765..fde1a43 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -40,6 +40,8 @@ int header_page_size_size;
 int header_page_data_offset;
 int header_page_data_size;
 
+int latency_format;
+
 static char *input_buf;
 static unsigned long long input_buf_ptr;
 static unsigned long long input_buf_siz;
@@ -1928,37 +1930,67 @@ static int get_common_info(const char *type, int *offset, int *size)
 	return 0;
 }
 
-int trace_parse_common_type(void *data)
+static int __parse_common(void *data, int *size, int *offset,
+			  char *name)
 {
-	static int type_offset;
-	static int type_size;
 	int ret;
 
-	if (!type_size) {
-		ret = get_common_info("common_type",
-				      &type_offset,
-				      &type_size);
+	if (!*size) {
+		ret = get_common_info(name, offset, size);
 		if (ret < 0)
 			return ret;
 	}
-	return read_size(data + type_offset, type_size);
+	return read_size(data + *offset, *size);
+}
+
+int trace_parse_common_type(void *data)
+{
+	static int type_offset;
+	static int type_size;
+
+	return __parse_common(data, &type_size, &type_offset,
+			      (char *)"common_type");
 }
 
 static int parse_common_pid(void *data)
 {
 	static int pid_offset;
 	static int pid_size;
+
+	return __parse_common(data, &pid_size, &pid_offset,
+			      (char *)"common_pid");
+}
+
+static int parse_common_pc(void *data)
+{
+	static int pc_offset;
+	static int pc_size;
+
+	return __parse_common(data, &pc_size, &pc_offset,
+			      (char *)"common_preempt_count");
+}
+
+static int parse_common_flags(void *data)
+{
+	static int flags_offset;
+	static int flags_size;
+
+	return __parse_common(data, &flags_size, &flags_offset,
+			      (char *)"common_flags");
+}
+
+static int parse_common_lock_depth(void *data)
+{
+	static int ld_offset;
+	static int ld_size;
 	int ret;
 
-	if (!pid_size) {
-		ret = get_common_info("common_pid",
-				      &pid_offset,
-				      &pid_size);
-		if (ret < 0)
-			return ret;
-	}
+	ret = __parse_common(data, &ld_size, &ld_offset,
+			     (char *)"common_lock_depth");
+	if (ret < 0)
+		return -1;
 
-	return read_size(data + pid_offset, pid_size);
+	return ret;
 }
 
 struct event *trace_find_event(int id)
@@ -2525,6 +2557,41 @@ static inline int log10_cpu(int nb)
 	return 1;
 }
 
+static void print_lat_fmt(void *data, int size __unused)
+{
+	unsigned int lat_flags;
+	unsigned int pc;
+	int lock_depth;
+	int hardirq;
+	int softirq;
+
+	lat_flags = parse_common_flags(data);
+	pc = parse_common_pc(data);
+	lock_depth = parse_common_lock_depth(data);
+
+	hardirq = lat_flags & TRACE_FLAG_HARDIRQ;
+	softirq = lat_flags & TRACE_FLAG_SOFTIRQ;
+
+	printf("%c%c%c",
+	       (lat_flags & TRACE_FLAG_IRQS_OFF) ? 'd' :
+	       (lat_flags & TRACE_FLAG_IRQS_NOSUPPORT) ?
+	       'X' : '.',
+	       (lat_flags & TRACE_FLAG_NEED_RESCHED) ?
+	       'N' : '.',
+	       (hardirq && softirq) ? 'H' :
+	       hardirq ? 'h' : softirq ? 's' : '.');
+
+	if (pc)
+		printf("%x", pc);
+	else
+		printf(".");
+
+	if (lock_depth < 0)
+		printf(".");
+	else
+		printf("%d", lock_depth);
+}
+
 /* taken from Linux, written by Frederic Weisbecker */
 static void print_graph_cpu(int cpu)
 {
@@ -2768,6 +2835,11 @@ pretty_print_func_ent(void *data, int size, struct event *event,
 
 	printf(" | ");
 
+	if (latency_format) {
+		print_lat_fmt(data, size);
+		printf(" | ");
+	}
+
 	field = find_field(event, "func");
 	if (!field)
 		die("function entry does not have func field");
@@ -2811,6 +2883,11 @@ pretty_print_func_ret(void *data, int size __unused, struct event *event,
 
 	printf(" | ");
 
+	if (latency_format) {
+		print_lat_fmt(data, size);
+		printf(" | ");
+	}
+
 	field = find_field(event, "rettime");
 	if (!field)
 		die("can't find rettime in return graph");
@@ -2882,9 +2959,14 @@ void print_event(int cpu, void *data, int size, unsigned long long nsecs,
 		return pretty_print_func_graph(data, size, event, cpu,
 					       pid, comm, secs, usecs);
 
-	printf("%16s-%-5d [%03d] %5lu.%09Lu: %s: ",
-	       comm, pid,  cpu,
-	       secs, nsecs, event->name);
+	if (latency_format) {
+		printf("%8.8s-%-5d %3d",
+		       comm, pid, cpu);
+		print_lat_fmt(data, size);
+	} else
+		printf("%16s-%-5d [%03d]", comm, pid,  cpu);
+
+	printf(" %5lu.%06lu: %s: ", secs, usecs, event->name);
 
 	if (event->flags & EVENT_FL_FAILED) {
 		printf("EVENT '%s' FAILED TO PARSE\n",
diff --git a/tools/perf/util/trace-event.h b/tools/perf/util/trace-event.h
index 29821ac..f6637c2 100644
--- a/tools/perf/util/trace-event.h
+++ b/tools/perf/util/trace-event.h
@@ -239,6 +239,8 @@ extern int header_page_size_size;
 extern int header_page_data_offset;
 extern int header_page_data_size;
 
+extern int latency_format;
+
 int parse_header_page(char *buf, unsigned long size);
 int trace_parse_common_type(void *data);
 struct event *trace_find_event(int id);
@@ -248,4 +250,13 @@ void *raw_field_ptr(struct event *event, const char *name, void *data);
 
 void read_tracing_data(int fd, struct perf_event_attr *pattrs, int nb_events);
 
+/* taken from kernel/trace/trace.h */
+enum trace_flag_type {
+	TRACE_FLAG_IRQS_OFF		= 0x01,
+	TRACE_FLAG_IRQS_NOSUPPORT	= 0x02,
+	TRACE_FLAG_NEED_RESCHED		= 0x04,
+	TRACE_FLAG_HARDIRQ		= 0x08,
+	TRACE_FLAG_SOFTIRQ		= 0x10,
+};
+
 #endif /* __PERF_TRACE_EVENTS_H */

[PATCH 12/13] [PATCH 12/13] perf tools: handle - and + in parsing trace print format

[Steven Rostedt]

[-- Attachment #1: 0012-perf-tools-handle-and-in-parsing-trace-print-format.patch --]
[-- Type: text/plain, Size: 1538 bytes --]

From: Steven Rostedt <srostedt@redhat.com>

The opterators '-' and '+' are not handled in the trace print format.

To do: '++' and '--'.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
---
 tools/perf/Makefile                 |    2 +-
 tools/perf/util/trace-event-parse.c |    6 ++++++
 2 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 495eb6d..1172aa7 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -194,7 +194,7 @@ EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wold-style-definition
 EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wstrict-prototypes
 EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wdeclaration-after-statement
 
-CFLAGS = $(M64) -ggdb3 -Wall -Wextra -std=gnu99 -Werror -O6 -fstack-protector-all -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS)
+CFLAGS = $(M64) -ggdb3 -Wall -Wextra -std=gnu99 -Werror -fstack-protector-all -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS)
 LDFLAGS = -lpthread -lrt -lelf -lm
 ALL_CFLAGS = $(CFLAGS)
 ALL_LDFLAGS = $(LDFLAGS)
diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index d3b0b2a..b8edc9d 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -2106,6 +2106,12 @@ static unsigned long long eval_num_arg(void *data, int size,
 				die("unknown op '%s'", arg->op.op);
 			val = left == right;
 			break;
+		case '-':
+			val = left - right;
+			break;
+		case '+':
+			val = left + right;
+			break;
 		default:
 			die("unknown op '%s'", arg->op.op);
 		}
-- 
1.6.3.3

Re: [PATCH 12/13] [PATCH 12/13] perf tools: handle - and + in parsing trace print format

[Ingo Molnar]

* Steven Rostedt <rostedt@goodmis.org> wrote:

> From: Steven Rostedt <srostedt@redhat.com>
> 
> The opterators '-' and '+' are not handled in the trace print format.
> 
> To do: '++' and '--'.
> 
> Signed-off-by: Steven Rostedt <srostedt@redhat.com>
> ---
>  tools/perf/Makefile                 |    2 +-
>  tools/perf/util/trace-event-parse.c |    6 ++++++
>  2 files changed, 7 insertions(+), 1 deletions(-)
> 
> diff --git a/tools/perf/Makefile b/tools/perf/Makefile
> index 495eb6d..1172aa7 100644
> --- a/tools/perf/Makefile
> +++ b/tools/perf/Makefile
> @@ -194,7 +194,7 @@ EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wold-style-definition
>  EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wstrict-prototypes
>  EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wdeclaration-after-statement
>  
> -CFLAGS = $(M64) -ggdb3 -Wall -Wextra -std=gnu99 -Werror -O6 -fstack-protector-all -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS)
> +CFLAGS = $(M64) -ggdb3 -Wall -Wextra -std=gnu99 -Werror -fstack-protector-all -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS)

hm, why does this patch change the Makefile?

i've skipped this hunk, it does not appear to be connected to the 
commit.

	Ingo

Re: [PATCH 12/13] [PATCH 12/13] perf tools: handle - and + in parsing trace print format

[Peter Zijlstra]

On Thu, 2009-10-15 at 08:42 +0200, Ingo Molnar wrote:

> > -CFLAGS = $(M64) -ggdb3 -Wall -Wextra -std=gnu99 -Werror -O6 -fstack-protector-all -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS)
> > +CFLAGS = $(M64) -ggdb3 -Wall -Wextra -std=gnu99 -Werror -fstack-protector-all -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS)
> 
> hm, why does this patch change the Makefile?
> 
> i've skipped this hunk, it does not appear to be connected to the 
> commit.

Probably because he wanted to debug things and O6 generates crappy gdb
experience.. and then it slipped into the diff

Re: [PATCH 12/13] [PATCH 12/13] perf tools: handle - and + in parsing trace print format

[Steven Rostedt]

On Thu, 2009-10-15 at 09:05 +0200, Peter Zijlstra wrote:
> On Thu, 2009-10-15 at 08:42 +0200, Ingo Molnar wrote:
> 
> > > -CFLAGS = $(M64) -ggdb3 -Wall -Wextra -std=gnu99 -Werror -O6 -fstack-protector-all -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS)
> > > +CFLAGS = $(M64) -ggdb3 -Wall -Wextra -std=gnu99 -Werror -fstack-protector-all -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS)
> > 
> > hm, why does this patch change the Makefile?
> > 
> > i've skipped this hunk, it does not appear to be connected to the 
> > commit.
> 
> Probably because he wanted to debug things and O6 generates crappy gdb
> experience.. and then it slipped into the diff

Yeah, that's exactly what happened. Damn, I thought I put the -O6 back.
This patch, I originally just did the '-', and thought. Hmm, it is
trivial to do the '+'. So I added it and did a "git commit -a --amend",
forgetting that I modified the Makefile.

This hunk can be ignored.

Thanks!

-- Steve

[tip:perf/core] perf tools: Handle - and + in parsing trace print format

[tip-bot for Steven Rostedt]

Commit-ID:  afdf1a404eed236d6f762ee44cc0f1dcc97206e0
Gitweb:     http://git.kernel.org/tip/afdf1a404eed236d6f762ee44cc0f1dcc97206e0
Author:     Steven Rostedt <srostedt@redhat.com>
AuthorDate: Wed, 14 Oct 2009 15:43:43 -0400
Committer:  Ingo Molnar <mingo@elte.hu>
CommitDate: Thu, 15 Oct 2009 10:42:40 +0200

perf tools: Handle - and + in parsing trace print format

The opterators '-' and '+' are not handled in the trace print
format.

To do: '++' and '--'.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <20091014194400.330843045@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 tools/perf/util/trace-event-parse.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index fde1a43..2d424ff 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -2106,6 +2106,12 @@ static unsigned long long eval_num_arg(void *data, int size,
 				die("unknown op '%s'", arg->op.op);
 			val = left == right;
 			break;
+		case '-':
+			val = left - right;
+			break;
+		case '+':
+			val = left + right;
+			break;
 		default:
 			die("unknown op '%s'", arg->op.op);
 		}

[PATCH 13/13] [PATCH 13/13] perf tools: remove all char * typecasts and use const in prototype

[Steven Rostedt]

[-- Attachment #1: 0013-perf-tools-remove-all-char-typecasts-and-use-const-i.patch --]
[-- Type: text/plain, Size: 15223 bytes --]

From: Steven Rostedt <srostedt@redhat.com>

The (char *) for all the static strings was a fix for the symptom and
not the disease. The real issue was that the function prototypes
needed to be declared "const char *".

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
---
 tools/perf/util/trace-event-parse.c |  131 ++++++++++++++++++-----------------
 1 files changed, 66 insertions(+), 65 deletions(-)

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index b8edc9d..22574c4 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -620,8 +620,8 @@ static int test_type(enum event_type type, enum event_type expect)
 	return 0;
 }
 
-static int test_type_token(enum event_type type, char *token,
-		    enum event_type expect, char *expect_tok)
+static int test_type_token(enum event_type type, const char *token,
+		    enum event_type expect, const char *expect_tok)
 {
 	if (type != expect) {
 		warning("Error: expected type %d but read %d",
@@ -653,7 +653,8 @@ static int read_expect_type(enum event_type expect, char **tok)
 	return __read_expect_type(expect, tok, 1);
 }
 
-static int __read_expected(enum event_type expect, char *str, int newline_ok)
+static int __read_expected(enum event_type expect, const char *str,
+			   int newline_ok)
 {
 	enum event_type type;
 	char *token;
@@ -671,12 +672,12 @@ static int __read_expected(enum event_type expect, char *str, int newline_ok)
 	return ret;
 }
 
-static int read_expected(enum event_type expect, char *str)
+static int read_expected(enum event_type expect, const char *str)
 {
 	return __read_expected(expect, str, 1);
 }
 
-static int read_expected_item(enum event_type expect, char *str)
+static int read_expected_item(enum event_type expect, const char *str)
 {
 	return __read_expected(expect, str, 0);
 }
@@ -685,10 +686,10 @@ static char *event_read_name(void)
 {
 	char *token;
 
-	if (read_expected(EVENT_ITEM, (char *)"name") < 0)
+	if (read_expected(EVENT_ITEM, "name") < 0)
 		return NULL;
 
-	if (read_expected(EVENT_OP, (char *)":") < 0)
+	if (read_expected(EVENT_OP, ":") < 0)
 		return NULL;
 
 	if (read_expect_type(EVENT_ITEM, &token) < 0)
@@ -706,10 +707,10 @@ static int event_read_id(void)
 	char *token;
 	int id;
 
-	if (read_expected_item(EVENT_ITEM, (char *)"ID") < 0)
+	if (read_expected_item(EVENT_ITEM, "ID") < 0)
 		return -1;
 
-	if (read_expected(EVENT_OP, (char *)":") < 0)
+	if (read_expected(EVENT_OP, ":") < 0)
 		return -1;
 
 	if (read_expect_type(EVENT_ITEM, &token) < 0)
@@ -759,7 +760,7 @@ static int event_read_fields(struct event *event, struct format_field **fields)
 
 		count++;
 
-		if (test_type_token(type, token, EVENT_ITEM, (char *)"field"))
+		if (test_type_token(type, token, EVENT_ITEM, "field"))
 			goto fail;
 		free_token(token);
 
@@ -774,7 +775,7 @@ static int event_read_fields(struct event *event, struct format_field **fields)
 			type = read_token(&token);
 		}
 
-		if (test_type_token(type, token, EVENT_OP, (char *)":") < 0)
+		if (test_type_token(type, token, EVENT_OP, ":") < 0)
 			return -1;
 
 		if (read_expect_type(EVENT_ITEM, &token) < 0)
@@ -892,14 +893,14 @@ static int event_read_fields(struct event *event, struct format_field **fields)
 				field->flags |= FIELD_IS_DYNAMIC;
 		}
 
-		if (test_type_token(type, token,  EVENT_OP, (char *)";"))
+		if (test_type_token(type, token,  EVENT_OP, ";"))
 			goto fail;
 		free_token(token);
 
-		if (read_expected(EVENT_ITEM, (char *)"offset") < 0)
+		if (read_expected(EVENT_ITEM, "offset") < 0)
 			goto fail_expect;
 
-		if (read_expected(EVENT_OP, (char *)":") < 0)
+		if (read_expected(EVENT_OP, ":") < 0)
 			goto fail_expect;
 
 		if (read_expect_type(EVENT_ITEM, &token))
@@ -907,13 +908,13 @@ static int event_read_fields(struct event *event, struct format_field **fields)
 		field->offset = strtoul(token, NULL, 0);
 		free_token(token);
 
-		if (read_expected(EVENT_OP, (char *)";") < 0)
+		if (read_expected(EVENT_OP, ";") < 0)
 			goto fail_expect;
 
-		if (read_expected(EVENT_ITEM, (char *)"size") < 0)
+		if (read_expected(EVENT_ITEM, "size") < 0)
 			goto fail_expect;
 
-		if (read_expected(EVENT_OP, (char *)":") < 0)
+		if (read_expected(EVENT_OP, ":") < 0)
 			goto fail_expect;
 
 		if (read_expect_type(EVENT_ITEM, &token))
@@ -921,18 +922,18 @@ static int event_read_fields(struct event *event, struct format_field **fields)
 		field->size = strtoul(token, NULL, 0);
 		free_token(token);
 
-		if (read_expected(EVENT_OP, (char *)";") < 0)
+		if (read_expected(EVENT_OP, ";") < 0)
 			goto fail_expect;
 
 		type = read_token(&token);
 		if (type != EVENT_NEWLINE) {
 			/* newer versions of the kernel have a "signed" type */
-			if (test_type_token(type, token, EVENT_ITEM, (char *)"signed"))
+			if (test_type_token(type, token, EVENT_ITEM, "signed"))
 				goto fail;
 
 			free_token(token);
 
-			if (read_expected(EVENT_OP, (char *)":") < 0)
+			if (read_expected(EVENT_OP, ":") < 0)
 				goto fail_expect;
 
 			if (read_expect_type(EVENT_ITEM, &token))
@@ -941,7 +942,7 @@ static int event_read_fields(struct event *event, struct format_field **fields)
 			/* add signed type */
 
 			free_token(token);
-			if (read_expected(EVENT_OP, (char *)";") < 0)
+			if (read_expected(EVENT_OP, ";") < 0)
 				goto fail_expect;
 
 			if (read_expect_type(EVENT_NEWLINE, &token))
@@ -970,10 +971,10 @@ static int event_read_format(struct event *event)
 	char *token;
 	int ret;
 
-	if (read_expected_item(EVENT_ITEM, (char *)"format") < 0)
+	if (read_expected_item(EVENT_ITEM, "format") < 0)
 		return -1;
 
-	if (read_expected(EVENT_OP, (char *)":") < 0)
+	if (read_expected(EVENT_OP, ":") < 0)
 		return -1;
 
 	if (read_expect_type(EVENT_NEWLINE, &token))
@@ -1033,7 +1034,7 @@ process_cond(struct event *event, struct print_arg *top, char **tok)
 
 	*tok = NULL;
 	type = process_arg(event, left, &token);
-	if (test_type_token(type, token, EVENT_OP, (char *)":"))
+	if (test_type_token(type, token, EVENT_OP, ":"))
 		goto out_free;
 
 	arg->op.op = token;
@@ -1065,7 +1066,7 @@ process_array(struct event *event, struct print_arg *top, char **tok)
 
 	*tok = NULL;
 	type = process_arg(event, arg, &token);
-	if (test_type_token(type, token, EVENT_OP, (char *)"]"))
+	if (test_type_token(type, token, EVENT_OP, "]"))
 		goto out_free;
 
 	top->op.right = arg;
@@ -1287,7 +1288,7 @@ process_entry(struct event *event __unused, struct print_arg *arg,
 	char *field;
 	char *token;
 
-	if (read_expected(EVENT_OP, (char *)"->") < 0)
+	if (read_expected(EVENT_OP, "->") < 0)
 		return EVENT_ERROR;
 
 	if (read_expect_type(EVENT_ITEM, &token) < 0)
@@ -1447,14 +1448,14 @@ process_fields(struct event *event, struct print_flag_sym **list, char **tok)
 	do {
 		free_token(token);
 		type = read_token_item(&token);
-		if (test_type_token(type, token, EVENT_OP, (char *)"{"))
+		if (test_type_token(type, token, EVENT_OP, "{"))
 			break;
 
 		arg = malloc_or_die(sizeof(*arg));
 
 		free_token(token);
 		type = process_arg(event, arg, &token);
-		if (test_type_token(type, token, EVENT_DELIM, (char *)","))
+		if (test_type_token(type, token, EVENT_DELIM, ","))
 			goto out_free;
 
 		field = malloc_or_die(sizeof(*field));
@@ -1465,7 +1466,7 @@ process_fields(struct event *event, struct print_flag_sym **list, char **tok)
 
 		free_token(token);
 		type = process_arg(event, arg, &token);
-		if (test_type_token(type, token, EVENT_OP, (char *)"}"))
+		if (test_type_token(type, token, EVENT_OP, "}"))
 			goto out_free;
 
 		value = arg_eval(arg);
@@ -1500,13 +1501,13 @@ process_flags(struct event *event, struct print_arg *arg, char **tok)
 	memset(arg, 0, sizeof(*arg));
 	arg->type = PRINT_FLAGS;
 
-	if (read_expected_item(EVENT_DELIM, (char *)"(") < 0)
+	if (read_expected_item(EVENT_DELIM, "(") < 0)
 		return EVENT_ERROR;
 
 	field = malloc_or_die(sizeof(*field));
 
 	type = process_arg(event, field, &token);
-	if (test_type_token(type, token, EVENT_DELIM, (char *)","))
+	if (test_type_token(type, token, EVENT_DELIM, ","))
 		goto out_free;
 
 	arg->flags.field = field;
@@ -1517,11 +1518,11 @@ process_flags(struct event *event, struct print_arg *arg, char **tok)
 		type = read_token_item(&token);
 	}
 
-	if (test_type_token(type, token, EVENT_DELIM, (char *)","))
+	if (test_type_token(type, token, EVENT_DELIM, ","))
 		goto out_free;
 
 	type = process_fields(event, &arg->flags.flags, &token);
-	if (test_type_token(type, token, EVENT_DELIM, (char *)")"))
+	if (test_type_token(type, token, EVENT_DELIM, ")"))
 		goto out_free;
 
 	free_token(token);
@@ -1543,19 +1544,19 @@ process_symbols(struct event *event, struct print_arg *arg, char **tok)
 	memset(arg, 0, sizeof(*arg));
 	arg->type = PRINT_SYMBOL;
 
-	if (read_expected_item(EVENT_DELIM, (char *)"(") < 0)
+	if (read_expected_item(EVENT_DELIM, "(") < 0)
 		return EVENT_ERROR;
 
 	field = malloc_or_die(sizeof(*field));
 
 	type = process_arg(event, field, &token);
-	if (test_type_token(type, token, EVENT_DELIM, (char *)","))
+	if (test_type_token(type, token, EVENT_DELIM, ","))
 		goto out_free;
 
 	arg->symbol.field = field;
 
 	type = process_fields(event, &arg->symbol.symbols, &token);
-	if (test_type_token(type, token, EVENT_DELIM, (char *)")"))
+	if (test_type_token(type, token, EVENT_DELIM, ")"))
 		goto out_free;
 
 	free_token(token);
@@ -1585,7 +1586,7 @@ process_paren(struct event *event, struct print_arg *arg, char **tok)
 	if (type == EVENT_ERROR)
 		return EVENT_ERROR;
 
-	if (test_type_token(type, token, EVENT_DELIM, (char *)")")) {
+	if (test_type_token(type, token, EVENT_DELIM, ")")) {
 		free_token(token);
 		return EVENT_ERROR;
 	}
@@ -1626,7 +1627,7 @@ process_str(struct event *event __unused, struct print_arg *arg, char **tok)
 	enum event_type type;
 	char *token;
 
-	if (read_expected(EVENT_DELIM, (char *)"(") < 0)
+	if (read_expected(EVENT_DELIM, "(") < 0)
 		return EVENT_ERROR;
 
 	if (read_expect_type(EVENT_ITEM, &token) < 0)
@@ -1636,7 +1637,7 @@ process_str(struct event *event __unused, struct print_arg *arg, char **tok)
 	arg->string.string = token;
 	arg->string.offset = -1;
 
-	if (read_expected(EVENT_DELIM, (char *)")") < 0)
+	if (read_expected(EVENT_DELIM, ")") < 0)
 		return EVENT_ERROR;
 
 	type = read_token(&token);
@@ -1775,13 +1776,13 @@ static int event_read_print(struct event *event)
 	char *token;
 	int ret;
 
-	if (read_expected_item(EVENT_ITEM, (char *)"print") < 0)
+	if (read_expected_item(EVENT_ITEM, "print") < 0)
 		return -1;
 
-	if (read_expected(EVENT_ITEM, (char *)"fmt") < 0)
+	if (read_expected(EVENT_ITEM, "fmt") < 0)
 		return -1;
 
-	if (read_expected(EVENT_OP, (char *)":") < 0)
+	if (read_expected(EVENT_OP, ":") < 0)
 		return -1;
 
 	if (read_expect_type(EVENT_DQUOTE, &token) < 0)
@@ -1812,7 +1813,7 @@ static int event_read_print(struct event *event)
 		goto concat;
 	}
 			     
-	if (test_type_token(type, token, EVENT_DELIM, (char *)","))
+	if (test_type_token(type, token, EVENT_DELIM, ","))
 		goto fail;
 
 	free_token(token);
@@ -1931,7 +1932,7 @@ static int get_common_info(const char *type, int *offset, int *size)
 }
 
 static int __parse_common(void *data, int *size, int *offset,
-			  char *name)
+			  const char *name)
 {
 	int ret;
 
@@ -1949,7 +1950,7 @@ int trace_parse_common_type(void *data)
 	static int type_size;
 
 	return __parse_common(data, &type_size, &type_offset,
-			      (char *)"common_type");
+			      "common_type");
 }
 
 static int parse_common_pid(void *data)
@@ -1958,7 +1959,7 @@ static int parse_common_pid(void *data)
 	static int pid_size;
 
 	return __parse_common(data, &pid_size, &pid_offset,
-			      (char *)"common_pid");
+			      "common_pid");
 }
 
 static int parse_common_pc(void *data)
@@ -1967,7 +1968,7 @@ static int parse_common_pc(void *data)
 	static int pc_size;
 
 	return __parse_common(data, &pc_size, &pc_offset,
-			      (char *)"common_preempt_count");
+			      "common_preempt_count");
 }
 
 static int parse_common_flags(void *data)
@@ -1976,7 +1977,7 @@ static int parse_common_flags(void *data)
 	static int flags_size;
 
 	return __parse_common(data, &flags_size, &flags_offset,
-			      (char *)"common_flags");
+			      "common_flags");
 }
 
 static int parse_common_lock_depth(void *data)
@@ -1986,7 +1987,7 @@ static int parse_common_lock_depth(void *data)
 	int ret;
 
 	ret = __parse_common(data, &ld_size, &ld_offset,
-			     (char *)"common_lock_depth");
+			     "common_lock_depth");
 	if (ret < 0)
 		return -1;
 
@@ -3049,15 +3050,15 @@ static void print_args(struct print_arg *args)
 	}
 }
 
-static void parse_header_field(char *field,
+static void parse_header_field(const char *field,
 			       int *offset, int *size)
 {
 	char *token;
 	int type;
 
-	if (read_expected(EVENT_ITEM, (char *)"field") < 0)
+	if (read_expected(EVENT_ITEM, "field") < 0)
 		return;
-	if (read_expected(EVENT_OP, (char *)":") < 0)
+	if (read_expected(EVENT_OP, ":") < 0)
 		return;
 
 	/* type */
@@ -3067,27 +3068,27 @@ static void parse_header_field(char *field,
 
 	if (read_expected(EVENT_ITEM, field) < 0)
 		return;
-	if (read_expected(EVENT_OP, (char *)";") < 0)
+	if (read_expected(EVENT_OP, ";") < 0)
 		return;
-	if (read_expected(EVENT_ITEM, (char *)"offset") < 0)
+	if (read_expected(EVENT_ITEM, "offset") < 0)
 		return;
-	if (read_expected(EVENT_OP, (char *)":") < 0)
+	if (read_expected(EVENT_OP, ":") < 0)
 		return;
 	if (read_expect_type(EVENT_ITEM, &token) < 0)
 		goto fail;
 	*offset = atoi(token);
 	free_token(token);
-	if (read_expected(EVENT_OP, (char *)";") < 0)
+	if (read_expected(EVENT_OP, ";") < 0)
 		return;
-	if (read_expected(EVENT_ITEM, (char *)"size") < 0)
+	if (read_expected(EVENT_ITEM, "size") < 0)
 		return;
-	if (read_expected(EVENT_OP, (char *)":") < 0)
+	if (read_expected(EVENT_OP, ":") < 0)
 		return;
 	if (read_expect_type(EVENT_ITEM, &token) < 0)
 		goto fail;
 	*size = atoi(token);
 	free_token(token);
-	if (read_expected(EVENT_OP, (char *)";") < 0)
+	if (read_expected(EVENT_OP, ";") < 0)
 		return;
 	type = read_token(&token);
 	if (type != EVENT_NEWLINE) {
@@ -3095,19 +3096,19 @@ static void parse_header_field(char *field,
 		if (type != EVENT_ITEM)
 			goto fail;
 
-		if (strcmp(token, (char *)"signed") != 0)
+		if (strcmp(token, "signed") != 0)
 			goto fail;
 
 		free_token(token);
 
-		if (read_expected(EVENT_OP, (char *)":") < 0)
+		if (read_expected(EVENT_OP, ":") < 0)
 			return;
 
 		if (read_expect_type(EVENT_ITEM, &token))
 			goto fail;
 
 		free_token(token);
-		if (read_expected(EVENT_OP, (char *)";") < 0)
+		if (read_expected(EVENT_OP, ";") < 0)
 			return;
 
 		if (read_expect_type(EVENT_NEWLINE, &token))
@@ -3121,11 +3122,11 @@ int parse_header_page(char *buf, unsigned long size)
 {
 	init_input_buf(buf, size);
 
-	parse_header_field((char *)"timestamp", &header_page_ts_offset,
+	parse_header_field("timestamp", &header_page_ts_offset,
 			   &header_page_ts_size);
-	parse_header_field((char *)"commit", &header_page_size_offset,
+	parse_header_field("commit", &header_page_size_offset,
 			   &header_page_size_size);
-	parse_header_field((char *)"data", &header_page_data_offset,
+	parse_header_field("data", &header_page_data_offset,
 			   &header_page_data_size);
 
 	return 0;
-- 
1.6.3.3

Re: [PATCH 13/13] [PATCH 13/13] perf tools: remove all char * typecasts and use const in prototype

[Frederic Weisbecker]

On Wed, Oct 14, 2009 at 03:43:44PM -0400, Steven Rostedt wrote:
> From: Steven Rostedt <srostedt@redhat.com>
> 
> The (char *) for all the static strings was a fix for the symptom and
> not the disease. The real issue was that the function prototypes
> needed to be declared "const char *".
> 
> Signed-off-by: Steven Rostedt <srostedt@redhat.com>
> ---


Yep.
I know it's a shame what I did. I was just harassed by tons of
warnings when I integrated trace-cmd into perf (because of its gcc
flags) and then I was too impatient and did the wrong thing :)

Thanks.

[tip:perf/core] perf tools: Remove all char * typecasts and use const in prototype

[tip-bot for Steven Rostedt]

Commit-ID:  c4dc775f53136cd6af8f88bce67cce9b42751768
Gitweb:     http://git.kernel.org/tip/c4dc775f53136cd6af8f88bce67cce9b42751768
Author:     Steven Rostedt <srostedt@redhat.com>
AuthorDate: Wed, 14 Oct 2009 15:43:44 -0400
Committer:  Ingo Molnar <mingo@elte.hu>
CommitDate: Thu, 15 Oct 2009 10:43:17 +0200

perf tools: Remove all char * typecasts and use const in prototype

The (char *) for all the static strings was a fix for the
symptom and not the disease. The real issue was that the
function prototypes needed to be declared "const char *".

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <20091014194400.635935008@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 tools/perf/util/trace-event-parse.c |  122 +++++++++++++++++-----------------
 1 files changed, 61 insertions(+), 61 deletions(-)

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index 2d424ff..4b61b49 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -685,10 +685,10 @@ static char *event_read_name(void)
 {
 	char *token;
 
-	if (read_expected(EVENT_ITEM, (char *)"name") < 0)
+	if (read_expected(EVENT_ITEM, "name") < 0)
 		return NULL;
 
-	if (read_expected(EVENT_OP, (char *)":") < 0)
+	if (read_expected(EVENT_OP, ":") < 0)
 		return NULL;
 
 	if (read_expect_type(EVENT_ITEM, &token) < 0)
@@ -706,10 +706,10 @@ static int event_read_id(void)
 	char *token;
 	int id;
 
-	if (read_expected_item(EVENT_ITEM, (char *)"ID") < 0)
+	if (read_expected_item(EVENT_ITEM, "ID") < 0)
 		return -1;
 
-	if (read_expected(EVENT_OP, (char *)":") < 0)
+	if (read_expected(EVENT_OP, ":") < 0)
 		return -1;
 
 	if (read_expect_type(EVENT_ITEM, &token) < 0)
@@ -759,7 +759,7 @@ static int event_read_fields(struct event *event, struct format_field **fields)
 
 		count++;
 
-		if (test_type_token(type, token, EVENT_ITEM, (char *)"field"))
+		if (test_type_token(type, token, EVENT_ITEM, "field"))
 			goto fail;
 		free_token(token);
 
@@ -774,7 +774,7 @@ static int event_read_fields(struct event *event, struct format_field **fields)
 			type = read_token(&token);
 		}
 
-		if (test_type_token(type, token, EVENT_OP, (char *)":") < 0)
+		if (test_type_token(type, token, EVENT_OP, ":") < 0)
 			return -1;
 
 		if (read_expect_type(EVENT_ITEM, &token) < 0)
@@ -892,14 +892,14 @@ static int event_read_fields(struct event *event, struct format_field **fields)
 				field->flags |= FIELD_IS_DYNAMIC;
 		}
 
-		if (test_type_token(type, token,  EVENT_OP, (char *)";"))
+		if (test_type_token(type, token,  EVENT_OP, ";"))
 			goto fail;
 		free_token(token);
 
-		if (read_expected(EVENT_ITEM, (char *)"offset") < 0)
+		if (read_expected(EVENT_ITEM, "offset") < 0)
 			goto fail_expect;
 
-		if (read_expected(EVENT_OP, (char *)":") < 0)
+		if (read_expected(EVENT_OP, ":") < 0)
 			goto fail_expect;
 
 		if (read_expect_type(EVENT_ITEM, &token))
@@ -907,13 +907,13 @@ static int event_read_fields(struct event *event, struct format_field **fields)
 		field->offset = strtoul(token, NULL, 0);
 		free_token(token);
 
-		if (read_expected(EVENT_OP, (char *)";") < 0)
+		if (read_expected(EVENT_OP, ";") < 0)
 			goto fail_expect;
 
-		if (read_expected(EVENT_ITEM, (char *)"size") < 0)
+		if (read_expected(EVENT_ITEM, "size") < 0)
 			goto fail_expect;
 
-		if (read_expected(EVENT_OP, (char *)":") < 0)
+		if (read_expected(EVENT_OP, ":") < 0)
 			goto fail_expect;
 
 		if (read_expect_type(EVENT_ITEM, &token))
@@ -921,18 +921,18 @@ static int event_read_fields(struct event *event, struct format_field **fields)
 		field->size = strtoul(token, NULL, 0);
 		free_token(token);
 
-		if (read_expected(EVENT_OP, (char *)";") < 0)
+		if (read_expected(EVENT_OP, ";") < 0)
 			goto fail_expect;
 
 		type = read_token(&token);
 		if (type != EVENT_NEWLINE) {
 			/* newer versions of the kernel have a "signed" type */
-			if (test_type_token(type, token, EVENT_ITEM, (char *)"signed"))
+			if (test_type_token(type, token, EVENT_ITEM, "signed"))
 				goto fail;
 
 			free_token(token);
 
-			if (read_expected(EVENT_OP, (char *)":") < 0)
+			if (read_expected(EVENT_OP, ":") < 0)
 				goto fail_expect;
 
 			if (read_expect_type(EVENT_ITEM, &token))
@@ -941,7 +941,7 @@ static int event_read_fields(struct event *event, struct format_field **fields)
 			/* add signed type */
 
 			free_token(token);
-			if (read_expected(EVENT_OP, (char *)";") < 0)
+			if (read_expected(EVENT_OP, ";") < 0)
 				goto fail_expect;
 
 			if (read_expect_type(EVENT_NEWLINE, &token))
@@ -970,10 +970,10 @@ static int event_read_format(struct event *event)
 	char *token;
 	int ret;
 
-	if (read_expected_item(EVENT_ITEM, (char *)"format") < 0)
+	if (read_expected_item(EVENT_ITEM, "format") < 0)
 		return -1;
 
-	if (read_expected(EVENT_OP, (char *)":") < 0)
+	if (read_expected(EVENT_OP, ":") < 0)
 		return -1;
 
 	if (read_expect_type(EVENT_NEWLINE, &token))
@@ -1033,7 +1033,7 @@ process_cond(struct event *event, struct print_arg *top, char **tok)
 
 	*tok = NULL;
 	type = process_arg(event, left, &token);
-	if (test_type_token(type, token, EVENT_OP, (char *)":"))
+	if (test_type_token(type, token, EVENT_OP, ":"))
 		goto out_free;
 
 	arg->op.op = token;
@@ -1065,7 +1065,7 @@ process_array(struct event *event, struct print_arg *top, char **tok)
 
 	*tok = NULL;
 	type = process_arg(event, arg, &token);
-	if (test_type_token(type, token, EVENT_OP, (char *)"]"))
+	if (test_type_token(type, token, EVENT_OP, "]"))
 		goto out_free;
 
 	top->op.right = arg;
@@ -1287,7 +1287,7 @@ process_entry(struct event *event __unused, struct print_arg *arg,
 	char *field;
 	char *token;
 
-	if (read_expected(EVENT_OP, (char *)"->") < 0)
+	if (read_expected(EVENT_OP, "->") < 0)
 		return EVENT_ERROR;
 
 	if (read_expect_type(EVENT_ITEM, &token) < 0)
@@ -1447,14 +1447,14 @@ process_fields(struct event *event, struct print_flag_sym **list, char **tok)
 	do {
 		free_token(token);
 		type = read_token_item(&token);
-		if (test_type_token(type, token, EVENT_OP, (char *)"{"))
+		if (test_type_token(type, token, EVENT_OP, "{"))
 			break;
 
 		arg = malloc_or_die(sizeof(*arg));
 
 		free_token(token);
 		type = process_arg(event, arg, &token);
-		if (test_type_token(type, token, EVENT_DELIM, (char *)","))
+		if (test_type_token(type, token, EVENT_DELIM, ","))
 			goto out_free;
 
 		field = malloc_or_die(sizeof(*field));
@@ -1465,7 +1465,7 @@ process_fields(struct event *event, struct print_flag_sym **list, char **tok)
 
 		free_token(token);
 		type = process_arg(event, arg, &token);
-		if (test_type_token(type, token, EVENT_OP, (char *)"}"))
+		if (test_type_token(type, token, EVENT_OP, "}"))
 			goto out_free;
 
 		value = arg_eval(arg);
@@ -1500,13 +1500,13 @@ process_flags(struct event *event, struct print_arg *arg, char **tok)
 	memset(arg, 0, sizeof(*arg));
 	arg->type = PRINT_FLAGS;
 
-	if (read_expected_item(EVENT_DELIM, (char *)"(") < 0)
+	if (read_expected_item(EVENT_DELIM, "(") < 0)
 		return EVENT_ERROR;
 
 	field = malloc_or_die(sizeof(*field));
 
 	type = process_arg(event, field, &token);
-	if (test_type_token(type, token, EVENT_DELIM, (char *)","))
+	if (test_type_token(type, token, EVENT_DELIM, ","))
 		goto out_free;
 
 	arg->flags.field = field;
@@ -1517,11 +1517,11 @@ process_flags(struct event *event, struct print_arg *arg, char **tok)
 		type = read_token_item(&token);
 	}
 
-	if (test_type_token(type, token, EVENT_DELIM, (char *)","))
+	if (test_type_token(type, token, EVENT_DELIM, ","))
 		goto out_free;
 
 	type = process_fields(event, &arg->flags.flags, &token);
-	if (test_type_token(type, token, EVENT_DELIM, (char *)")"))
+	if (test_type_token(type, token, EVENT_DELIM, ")"))
 		goto out_free;
 
 	free_token(token);
@@ -1543,19 +1543,19 @@ process_symbols(struct event *event, struct print_arg *arg, char **tok)
 	memset(arg, 0, sizeof(*arg));
 	arg->type = PRINT_SYMBOL;
 
-	if (read_expected_item(EVENT_DELIM, (char *)"(") < 0)
+	if (read_expected_item(EVENT_DELIM, "(") < 0)
 		return EVENT_ERROR;
 
 	field = malloc_or_die(sizeof(*field));
 
 	type = process_arg(event, field, &token);
-	if (test_type_token(type, token, EVENT_DELIM, (char *)","))
+	if (test_type_token(type, token, EVENT_DELIM, ","))
 		goto out_free;
 
 	arg->symbol.field = field;
 
 	type = process_fields(event, &arg->symbol.symbols, &token);
-	if (test_type_token(type, token, EVENT_DELIM, (char *)")"))
+	if (test_type_token(type, token, EVENT_DELIM, ")"))
 		goto out_free;
 
 	free_token(token);
@@ -1585,7 +1585,7 @@ process_paren(struct event *event, struct print_arg *arg, char **tok)
 	if (type == EVENT_ERROR)
 		return EVENT_ERROR;
 
-	if (test_type_token(type, token, EVENT_DELIM, (char *)")")) {
+	if (test_type_token(type, token, EVENT_DELIM, ")")) {
 		free_token(token);
 		return EVENT_ERROR;
 	}
@@ -1626,7 +1626,7 @@ process_str(struct event *event __unused, struct print_arg *arg, char **tok)
 	enum event_type type;
 	char *token;
 
-	if (read_expected(EVENT_DELIM, (char *)"(") < 0)
+	if (read_expected(EVENT_DELIM, "(") < 0)
 		return EVENT_ERROR;
 
 	if (read_expect_type(EVENT_ITEM, &token) < 0)
@@ -1636,7 +1636,7 @@ process_str(struct event *event __unused, struct print_arg *arg, char **tok)
 	arg->string.string = token;
 	arg->string.offset = -1;
 
-	if (read_expected(EVENT_DELIM, (char *)")") < 0)
+	if (read_expected(EVENT_DELIM, ")") < 0)
 		return EVENT_ERROR;
 
 	type = read_token(&token);
@@ -1775,13 +1775,13 @@ static int event_read_print(struct event *event)
 	char *token;
 	int ret;
 
-	if (read_expected_item(EVENT_ITEM, (char *)"print") < 0)
+	if (read_expected_item(EVENT_ITEM, "print") < 0)
 		return -1;
 
-	if (read_expected(EVENT_ITEM, (char *)"fmt") < 0)
+	if (read_expected(EVENT_ITEM, "fmt") < 0)
 		return -1;
 
-	if (read_expected(EVENT_OP, (char *)":") < 0)
+	if (read_expected(EVENT_OP, ":") < 0)
 		return -1;
 
 	if (read_expect_type(EVENT_DQUOTE, &token) < 0)
@@ -1811,8 +1811,8 @@ static int event_read_print(struct event *event)
 		token = cat;
 		goto concat;
 	}
-			     
-	if (test_type_token(type, token, EVENT_DELIM, (char *)","))
+
+	if (test_type_token(type, token, EVENT_DELIM, ","))
 		goto fail;
 
 	free_token(token);
@@ -1931,7 +1931,7 @@ static int get_common_info(const char *type, int *offset, int *size)
 }
 
 static int __parse_common(void *data, int *size, int *offset,
-			  char *name)
+			  const char *name)
 {
 	int ret;
 
@@ -1949,7 +1949,7 @@ int trace_parse_common_type(void *data)
 	static int type_size;
 
 	return __parse_common(data, &type_size, &type_offset,
-			      (char *)"common_type");
+			      "common_type");
 }
 
 static int parse_common_pid(void *data)
@@ -1958,7 +1958,7 @@ static int parse_common_pid(void *data)
 	static int pid_size;
 
 	return __parse_common(data, &pid_size, &pid_offset,
-			      (char *)"common_pid");
+			      "common_pid");
 }
 
 static int parse_common_pc(void *data)
@@ -1967,7 +1967,7 @@ static int parse_common_pc(void *data)
 	static int pc_size;
 
 	return __parse_common(data, &pc_size, &pc_offset,
-			      (char *)"common_preempt_count");
+			      "common_preempt_count");
 }
 
 static int parse_common_flags(void *data)
@@ -1976,7 +1976,7 @@ static int parse_common_flags(void *data)
 	static int flags_size;
 
 	return __parse_common(data, &flags_size, &flags_offset,
-			      (char *)"common_flags");
+			      "common_flags");
 }
 
 static int parse_common_lock_depth(void *data)
@@ -1986,7 +1986,7 @@ static int parse_common_lock_depth(void *data)
 	int ret;
 
 	ret = __parse_common(data, &ld_size, &ld_offset,
-			     (char *)"common_lock_depth");
+			     "common_lock_depth");
 	if (ret < 0)
 		return -1;
 
@@ -3049,15 +3049,15 @@ static void print_args(struct print_arg *args)
 	}
 }
 
-static void parse_header_field(char *field,
+static void parse_header_field(const char *field,
 			       int *offset, int *size)
 {
 	char *token;
 	int type;
 
-	if (read_expected(EVENT_ITEM, (char *)"field") < 0)
+	if (read_expected(EVENT_ITEM, "field") < 0)
 		return;
-	if (read_expected(EVENT_OP, (char *)":") < 0)
+	if (read_expected(EVENT_OP, ":") < 0)
 		return;
 
 	/* type */
@@ -3067,27 +3067,27 @@ static void parse_header_field(char *field,
 
 	if (read_expected(EVENT_ITEM, field) < 0)
 		return;
-	if (read_expected(EVENT_OP, (char *)";") < 0)
+	if (read_expected(EVENT_OP, ";") < 0)
 		return;
-	if (read_expected(EVENT_ITEM, (char *)"offset") < 0)
+	if (read_expected(EVENT_ITEM, "offset") < 0)
 		return;
-	if (read_expected(EVENT_OP, (char *)":") < 0)
+	if (read_expected(EVENT_OP, ":") < 0)
 		return;
 	if (read_expect_type(EVENT_ITEM, &token) < 0)
 		goto fail;
 	*offset = atoi(token);
 	free_token(token);
-	if (read_expected(EVENT_OP, (char *)";") < 0)
+	if (read_expected(EVENT_OP, ";") < 0)
 		return;
-	if (read_expected(EVENT_ITEM, (char *)"size") < 0)
+	if (read_expected(EVENT_ITEM, "size") < 0)
 		return;
-	if (read_expected(EVENT_OP, (char *)":") < 0)
+	if (read_expected(EVENT_OP, ":") < 0)
 		return;
 	if (read_expect_type(EVENT_ITEM, &token) < 0)
 		goto fail;
 	*size = atoi(token);
 	free_token(token);
-	if (read_expected(EVENT_OP, (char *)";") < 0)
+	if (read_expected(EVENT_OP, ";") < 0)
 		return;
 	type = read_token(&token);
 	if (type != EVENT_NEWLINE) {
@@ -3095,19 +3095,19 @@ static void parse_header_field(char *field,
 		if (type != EVENT_ITEM)
 			goto fail;
 
-		if (strcmp(token, (char *)"signed") != 0)
+		if (strcmp(token, "signed") != 0)
 			goto fail;
 
 		free_token(token);
 
-		if (read_expected(EVENT_OP, (char *)":") < 0)
+		if (read_expected(EVENT_OP, ":") < 0)
 			return;
 
 		if (read_expect_type(EVENT_ITEM, &token))
 			goto fail;
 
 		free_token(token);
-		if (read_expected(EVENT_OP, (char *)";") < 0)
+		if (read_expected(EVENT_OP, ";") < 0)
 			return;
 
 		if (read_expect_type(EVENT_NEWLINE, &token))
@@ -3121,11 +3121,11 @@ int parse_header_page(char *buf, unsigned long size)
 {
 	init_input_buf(buf, size);
 
-	parse_header_field((char *)"timestamp", &header_page_ts_offset,
+	parse_header_field("timestamp", &header_page_ts_offset,
 			   &header_page_ts_size);
-	parse_header_field((char *)"commit", &header_page_size_offset,
+	parse_header_field("commit", &header_page_size_offset,
 			   &header_page_size_size);
-	parse_header_field((char *)"data", &header_page_data_offset,
+	parse_header_field("data", &header_page_data_offset,
 			   &header_page_data_size);
 
 	return 0;

Re: [PATCH 00/13] [GIT PULL] perf tools: updates to parsing events

[Ingo Molnar]

* Steven Rostedt <rostedt@goodmis.org> wrote:

> Ingo,
> 
> Please pull the latest perf/core tree, which can be found at:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace.git
> perf/core
> 
> 
> Steven Rostedt (13):
>       perf tools: handle print concatinations in event format file
>       perf tools: fix backslash processing on trace print formats
>       perf tools: handle trace parsing of '<' and '>'
>       perf tools: handle arrays in print fields for trace parsing
>       perf tools: handle '*' as typecast in trace parsing
>       perf tools: handle newlines in trace parsing better
>       perf tools: handle the case with and without the "signed" trace field
>       perf tools: still continue on failed parsing of an event
>       perf tools: fix bprintk reading in trace output
>       perf tools: handle both versions of ftrace output
>       perf tools: add latency format to trace output
>       perf tools: handle '-' and '+' in parsing trace print format
>       perf tools: remove all char * typecasts and use const in prototype
> 
> ----
>  tools/perf/Makefile                 |    2 +-
>  tools/perf/builtin-trace.c          |    2 +
>  tools/perf/util/trace-event-parse.c |  533 +++++++++++++++++++++++++----------
>  tools/perf/util/trace-event.h       |   25 ++-
>  4 files changed, 405 insertions(+), 157 deletions(-)

Applied, thanks Steve! Very nice changes/fixes!

	Ingo

[PATCH 0/2] [GIT PULL] perf tools: trace parse fix and debug compiling

[Steven Rostedt]

Ingo,

Please pull the latest perf/core tree, which can be found at:

  git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace.git
perf/core


Steven Rostedt (2):
      perf tools: add make DEBUG=1 to remove the -O6 cflag
      perf tools: use strsep over strtok_r for parsing single line

----
 tools/perf/Makefile                 |    9 ++++++++-
 tools/perf/util/trace-event-parse.c |    9 ++++++---
 2 files changed, 14 insertions(+), 4 deletions(-)

[PATCH 1/2] [PATCH 1/2] perf tools: add make DEBUG=1 to remove the -O6 cflag

[Steven Rostedt]

[-- Attachment #1: 0001-perf-tools-add-make-DEBUG-1-to-remove-the-O6-cflag.patch --]
[-- Type: text/plain, Size: 1471 bytes --]

From: Steven Rostedt <srostedt@redhat.com>

When using gdb to debug perf, it is practically impossible to use when
perf is compiled with -O6. For developers, this patch adds the DEBUG
feature to the make command line so that a developer can easily remove
the optimization flag.

Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
LKML-Reference: <1255590330.8392.446.camel@twins>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
 tools/perf/Makefile |    9 ++++++++-
 1 files changed, 8 insertions(+), 1 deletions(-)

diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index db89a6d..4eff0be 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -201,7 +201,14 @@ EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wold-style-definition
 EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wstrict-prototypes
 EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wdeclaration-after-statement
 
-CFLAGS = $(MBITS) -ggdb3 -Wall -Wextra -std=gnu99 -Werror -O6 -fstack-protector-all -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS)
+ifeq ("$(origin DEBUG)", "command line")
+  PERF_DEBUG = $(DEBUG)
+endif
+ifndef PERF_DEBUG
+  CFLAGS_OPTIMIZE = -O6
+endif
+
+CFLAGS = $(MBITS) -ggdb3 -Wall -Wextra -std=gnu99 -Werror $(CFLAGS_OPTIMIZE) -fstack-protector-all -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS)
 LDFLAGS = -lpthread -lrt -lelf -lm
 ALL_CFLAGS = $(CFLAGS)
 ALL_LDFLAGS = $(LDFLAGS)
-- 
1.6.3.3

[tip:branch?] perf tools: Add 'make DEBUG=1' to remove the -O6 cflag

[tip-bot for Steven Rostedt]

Commit-ID:  60d526f7fa6246b8e32d5b45610d625a5608d988
Gitweb:     http://git.kernel.org/tip/60d526f7fa6246b8e32d5b45610d625a5608d988
Author:     Steven Rostedt <srostedt@redhat.com>
AuthorDate: Tue, 20 Oct 2009 19:19:34 -0400
Committer:  Ingo Molnar <mingo@elte.hu>
CommitDate: Wed, 21 Oct 2009 13:39:57 +0200

perf tools: Add 'make DEBUG=1' to remove the -O6 cflag

When using gdb to debug perf, it is practically impossible to
use when perf is compiled with -O6. For developers, this patch
adds the DEBUG feature to the make command line so that a
developer can easily remove the optimization flag.

LKML-Reference: <1255590330.8392.446.camel@twins>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <20091020232033.984323261@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 tools/perf/Makefile |    9 ++++++++-
 1 files changed, 8 insertions(+), 1 deletions(-)

diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 64c6b7b..65e6e52 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -201,7 +201,14 @@ EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wold-style-definition
 EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wstrict-prototypes
 EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wdeclaration-after-statement
 
-CFLAGS = $(MBITS) -ggdb3 -Wall -Wextra -std=gnu99 -Werror -O6 -fstack-protector-all -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS)
+ifeq ("$(origin DEBUG)", "command line")
+  PERF_DEBUG = $(DEBUG)
+endif
+ifndef PERF_DEBUG
+  CFLAGS_OPTIMIZE = -O6
+endif
+
+CFLAGS = $(MBITS) -ggdb3 -Wall -Wextra -std=gnu99 -Werror $(CFLAGS_OPTIMIZE) -fstack-protector-all -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS)
 LDFLAGS = -lpthread -lrt -lelf -lm
 ALL_CFLAGS = $(CFLAGS)
 ALL_LDFLAGS = $(LDFLAGS)

[PATCH 2/2] [PATCH 2/2] perf tools: use strsep over strtok_r for parsing single line

[Steven Rostedt]

[-- Attachment #1: 0002-perf-tools-use-strsep-over-strtok_r-for-parsing-sing.patch --]
[-- Type: text/plain, Size: 1761 bytes --]

From: Steven Rostedt <srostedt@redhat.com>

The second argument in the strtok_r is not to be used generically and can
have different implementations. Currently the function parsing of
the perf trace code uses the second argument to copy data from.
This can crash the tool or just have unpredictable results.

The correct solution is to use strsep which has a defined result.

I also added a check to see if the result was correct, and will break
out of the loop in case it fails to parse as expected.

Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
LKML-Reference: <1255971369-11368-1-git-send-email-acme@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
 tools/perf/util/trace-event-parse.c |    9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index 4b61b49..eae5605 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -286,16 +286,19 @@ void parse_ftrace_printk(char *file, unsigned int size __unused)
 	char *line;
 	char *next = NULL;
 	char *addr_str;
-	char *fmt;
 	int i;
 
 	line = strtok_r(file, "\n", &next);
 	while (line) {
+		addr_str = strsep(&line, ":");
+		if (!line) {
+			warning("error parsing print strings");
+			break;
+		}
 		item = malloc_or_die(sizeof(*item));
-		addr_str = strtok_r(line, ":", &fmt);
 		item->addr = strtoull(addr_str, NULL, 16);
 		/* fmt still has a space, skip it */
-		item->printk = strdup(fmt+1);
+		item->printk = strdup(line+1);
 		item->next = list;
 		list = item;
 		line = strtok_r(NULL, "\n", &next);
-- 
1.6.3.3

[tip:branch?] perf tools: Use strsep() over strtok_r() for parsing single line

[tip-bot for Steven Rostedt]

Commit-ID:  4e3b799d7dbb2a12ca8dca8d3594d32095772973
Gitweb:     http://git.kernel.org/tip/4e3b799d7dbb2a12ca8dca8d3594d32095772973
Author:     Steven Rostedt <srostedt@redhat.com>
AuthorDate: Tue, 20 Oct 2009 19:19:35 -0400
Committer:  Ingo Molnar <mingo@elte.hu>
CommitDate: Wed, 21 Oct 2009 13:39:57 +0200

perf tools: Use strsep() over strtok_r() for parsing single line

The second argument in the strtok_r() function is not to be used
generically and can have different implementations. Currently
the function parsing of the perf trace code uses the second
argument to copy data from. This can crash the tool or just have
unpredictable results.

The correct solution is to use strsep() which has a defined
result.

I also added a check to see if the result was correct, and will
break out of the loop in case it fails to parse as expected.

Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <20091020232034.237814877@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 tools/perf/util/trace-event-parse.c |    9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index 4b61b49..eae5605 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -286,16 +286,19 @@ void parse_ftrace_printk(char *file, unsigned int size __unused)
 	char *line;
 	char *next = NULL;
 	char *addr_str;
-	char *fmt;
 	int i;
 
 	line = strtok_r(file, "\n", &next);
 	while (line) {
+		addr_str = strsep(&line, ":");
+		if (!line) {
+			warning("error parsing print strings");
+			break;
+		}
 		item = malloc_or_die(sizeof(*item));
-		addr_str = strtok_r(line, ":", &fmt);
 		item->addr = strtoull(addr_str, NULL, 16);
 		/* fmt still has a space, skip it */
-		item->printk = strdup(fmt+1);
+		item->printk = strdup(line+1);
 		item->next = list;
 		list = item;
 		line = strtok_r(NULL, "\n", &next);