[PATCH tip 3/3] perf_counter tools: Add --symbols parameter to 'perf report'

[PATCH tip 3/3] perf_counter tools: Add --symbols parameter to 'perf report'

[Arnaldo Carvalho de Melo]

So that we can filter by symbol name.

The 'pfunct' utility in the 'dwarves' package can be used to create a
file with the functions one wants.

Example:

[acme@doppio pahole]$ pfunct /usr/lib/debug/usr/lib64/libdw-0.141.so.debug | grep dwarf > /tmp/dwarf.symbols
[acme@doppio pahole]$ wc -l /tmp/dwarf.symbols
93 /tmp/dwarf.symbols
[acme@doppio pahole]$ head -3 /tmp/dwarf.symbols
dwfl_addrdwarf
dwfl_module_getdwarf
dwfl_getdwarf
[acme@doppio pahole]$ perf report --sort comm,dso,symbol --comms pahole --dsos /usr/lib64/libdw-0.141.so --symbols file:///tmp/dwarf.symbols

    33.99%            pahole  /usr/lib64/libdw-0.141.so  [.] dwarf_tag
    29.07%            pahole  /usr/lib64/libdw-0.141.so  [.] dwarf_decl_file
    27.71%            pahole  /usr/lib64/libdw-0.141.so  [.] dwarf_getsrclines
     4.54%            pahole  /usr/lib64/libdw-0.141.so  0x00000000007400
     3.93%            pahole  /usr/lib64/libdw-0.141.so  [.] dwarf_decl_line
     0.46%            pahole  /usr/lib64/libdw-0.141.so  [.] dwarf_getlocation
     0.18%            pahole  /usr/lib64/libdw-0.141.so  [.] __libdwarf_next_prime
     0.13%            pahole  /usr/lib64/libdw-0.141.so  [.] dwarf_diecu

[acme@doppio pahole]$

Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/Documentation/perf-report.txt |    4 ++++
 tools/perf/builtin-report.c              |   10 ++++++++--
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt
index 4c44ef1..8aa3f8c 100644
--- a/tools/perf/Documentation/perf-report.txt
+++ b/tools/perf/Documentation/perf-report.txt
@@ -28,6 +28,10 @@ OPTIONS
 --comms=::
 	Only consider symbols in these comms. CSV that understands
 	file://filename entries.
+-S::
+--symbols=::
+	Only consider these symbols. CSV that understands
+	file://filename entries.
 
 SEE ALSO
 --------
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 60bdcd9..87c286e 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -33,8 +33,8 @@ static char		*vmlinux = NULL;
 
 static char		default_sort_order[] = "comm,dso";
 static char		*sort_order = default_sort_order;
-static char		*dso_list_str, *comm_list_str;
-static struct strlist	*dso_list, *comm_list;
+static char		*dso_list_str, *comm_list_str, *sym_list_str;
+static struct strlist	*dso_list, *comm_list, *sym_list;
 
 static int		input;
 static int		show_mask = SHOW_KERNEL | SHOW_USER | SHOW_HV;
@@ -1281,6 +1281,9 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head)
 		if (dso_list && dso && dso->name && !strlist__has_entry(dso_list, dso->name))
 			return 0;
 
+		if (sym_list && sym && !strlist__has_entry(sym_list, sym->name))
+			return 0;
+
 		if (hist_entry__add(thread, map, dso, sym, ip, chain, level, period)) {
 			eprintf("problem incrementing symbol count, skipping event\n");
 			return -1;
@@ -1672,6 +1675,8 @@ static const struct option options[] = {
 		   "only consider symbols in these dsos"),
 	OPT_STRING('C', "comms", &comm_list_str, "comm[,comm...]",
 		   "only consider symbols in these comms"),
+	OPT_STRING('S', "symbols", &sym_list_str, "symbol[,symbol...]",
+		   "only consider these symbols"),
 	OPT_END()
 };
 
@@ -1726,6 +1731,7 @@ int cmd_report(int argc, const char **argv, const char *prefix)
 
 	setup_list(&dso_list, dso_list_str, "dso");
 	setup_list(&comm_list, comm_list_str, "comm");
+	setup_list(&sym_list, sym_list_str, "symbol");
 
 	setup_pager();
 
-- 
1.6.2.5

[PATCH 0/3] perf_counter tools: filter by comm, dso & symbol lists Linux Kernel Mailing List <linux-kernel@vger.kernel.org>

[Arnaldo Carvalho de Melo]

Hi,

	The following patches allows filtering by comm, dso & symbol
lists, in a way similar to oprofile image: parameters.

Regards,

- Arnaldo

[PATCH tip 1/3] perf_counter tools: Add --dsos parameter to 'perf report'

[Arnaldo Carvalho de Melo]

So that we can filter by dso. Symbols in other dsos won't be accounted
for.

Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/Documentation/perf-report.txt |    4 +
 tools/perf/Makefile                      |    2 +
 tools/perf/builtin-report.c              |   16 +++
 tools/perf/util/strlist.c                |  184 ++++++++++++++++++++++++++++++
 tools/perf/util/strlist.h                |   32 +++++
 5 files changed, 238 insertions(+), 0 deletions(-)
 create mode 100644 tools/perf/util/strlist.c
 create mode 100644 tools/perf/util/strlist.h

diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt
index 40c1db8..13d85ca 100644
--- a/tools/perf/Documentation/perf-report.txt
+++ b/tools/perf/Documentation/perf-report.txt
@@ -20,6 +20,10 @@ OPTIONS
 -i::
 --input=::
         Input file name. (default: perf.data)
+-d::
+--dsos=::
+	Only consider symbols in these dsos. CSV that understands
+	file://filename entries.
 
 SEE ALSO
 --------
diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 1c1296d..9c6d0ae 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -301,6 +301,7 @@ LIB_H += util/util.h
 LIB_H += util/help.h
 LIB_H += util/strbuf.h
 LIB_H += util/string.h
+LIB_H += util/strlist.h
 LIB_H += util/run-command.h
 LIB_H += util/sigchain.h
 LIB_H += util/symbol.h
@@ -322,6 +323,7 @@ LIB_OBJS += util/run-command.o
 LIB_OBJS += util/quote.o
 LIB_OBJS += util/strbuf.o
 LIB_OBJS += util/string.o
+LIB_OBJS += util/strlist.o
 LIB_OBJS += util/usage.o
 LIB_OBJS += util/wrapper.o
 LIB_OBJS += util/sigchain.o
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index ed391db..7c6b6e7 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -16,6 +16,7 @@
 #include "util/symbol.h"
 #include "util/string.h"
 #include "util/callchain.h"
+#include "util/strlist.h"
 
 #include "perf.h"
 #include "util/header.h"
@@ -32,6 +33,8 @@ static char		*vmlinux = NULL;
 
 static char		default_sort_order[] = "comm,dso";
 static char		*sort_order = default_sort_order;
+static char		*dso_list_str;
+static struct strlist	*dso_list;
 
 static int		input;
 static int		show_mask = SHOW_KERNEL | SHOW_USER | SHOW_HV;
@@ -1272,6 +1275,9 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head)
 	if (show & show_mask) {
 		struct symbol *sym = resolve_symbol(thread, &map, &dso, &ip);
 
+		if (dso_list && dso && dso->name && !strlist__has_entry(dso_list, dso->name))
+			return 0;
+
 		if (hist_entry__add(thread, map, dso, sym, ip, chain, level, period)) {
 			eprintf("problem incrementing symbol count, skipping event\n");
 			return -1;
@@ -1659,6 +1665,8 @@ static const struct option options[] = {
 	OPT_BOOLEAN('x', "exclude-other", &exclude_other,
 		    "Only display entries with parent-match"),
 	OPT_BOOLEAN('c', "callchain", &callchain, "Display callchains"),
+	OPT_STRING('d', "dsos", &dso_list_str, "dso[,dso...]",
+		   "only consider symbols in these dsos"),
 	OPT_END()
 };
 
@@ -1698,6 +1706,14 @@ int cmd_report(int argc, const char **argv, const char *prefix)
 	if (argc)
 		usage_with_options(report_usage, options);
 
+	if (dso_list_str) {
+		dso_list = strlist__new(true, dso_list_str);
+		if (!dso_list) {
+			fprintf(stderr, "problems parsing dso list\n");
+			exit(129);
+		}
+	}
+
 	setup_pager();
 
 	return __cmd_report();
diff --git a/tools/perf/util/strlist.c b/tools/perf/util/strlist.c
new file mode 100644
index 0000000..6f334f1
--- /dev/null
+++ b/tools/perf/util/strlist.c
@@ -0,0 +1,184 @@
+/*
+ * (c) 2009 Arnaldo Carvalho de Melo <acme@redhat.com>
+ *
+ * Licensed under the GPLv2.
+ */
+
+#include "strlist.h"
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+static struct str_node *str_node__new(const char *s, bool dupstr)
+{
+	struct str_node *self = malloc(sizeof(*self));
+
+	if (self != NULL){
+		if (dupstr) {
+			s = strdup(s);
+			if (s == NULL)
+				goto out_delete;
+		}
+		self->s = s;
+	}
+
+	return self;
+
+out_delete:
+	free(self);
+	return NULL;
+}
+
+static void str_node__delete(struct str_node *self, bool dupstr)
+{
+	if (dupstr)
+		free((void *)self->s);
+	free(self);
+}
+
+int strlist__add(struct strlist *self, const char *new_entry)
+{
+	struct rb_node **p = &self->entries.rb_node;
+	struct rb_node *parent = NULL;
+	struct str_node *sn;
+
+	while (*p != NULL) {
+		int rc;
+
+		parent = *p;
+		sn = rb_entry(parent, struct str_node, rb_node);
+		rc = strcmp(sn->s, new_entry);
+
+		if (rc > 0)
+			p = &(*p)->rb_left;
+		else if (rc < 0)
+			p = &(*p)->rb_right;
+		else
+			return -EEXIST;
+	}
+
+	sn = str_node__new(new_entry, self->dupstr);
+	if (sn == NULL)
+		return -ENOMEM;
+
+	rb_link_node(&sn->rb_node, parent, p);
+	rb_insert_color(&sn->rb_node, &self->entries);
+
+	return 0;
+}
+
+int strlist__load(struct strlist *self, const char *filename)
+{
+	char entry[1024];
+	int err;
+	FILE *fp = fopen(filename, "r");
+
+	if (fp == NULL)
+		return errno;
+
+	while (fgets(entry, sizeof(entry), fp) != NULL) {
+		const size_t len = strlen(entry);
+
+		if (len == 0)
+			continue;
+		entry[len - 1] = '\0';
+
+		err = strlist__add(self, entry);
+		if (err != 0)
+			goto out;
+	}
+
+	err = 0;
+out:
+	fclose(fp);
+	return err;
+}
+
+void strlist__remove(struct strlist *self, struct str_node *sn)
+{
+	rb_erase(&sn->rb_node, &self->entries);
+	str_node__delete(sn, self->dupstr);
+}
+
+bool strlist__has_entry(struct strlist *self, const char *entry)
+{
+	struct rb_node **p = &self->entries.rb_node;
+	struct rb_node *parent = NULL;
+
+	while (*p != NULL) {
+		struct str_node *sn;
+		int rc;
+
+		parent = *p;
+		sn = rb_entry(parent, struct str_node, rb_node);
+		rc = strcmp(sn->s, entry);
+
+		if (rc > 0)
+			p = &(*p)->rb_left;
+		else if (rc < 0)
+			p = &(*p)->rb_right;
+		else
+			return true;
+	}
+
+	return false;
+}
+
+static int strlist__parse_list_entry(struct strlist *self, const char *s)
+{
+	if (strncmp(s, "file://", 7) == 0)
+		return strlist__load(self, s + 7);
+
+	return strlist__add(self, s);
+}
+
+int strlist__parse_list(struct strlist *self, const char *s)
+{
+	char *sep;
+	int err;
+
+	while ((sep = strchr(s, ',')) != NULL) {
+		*sep = '\0';
+		err = strlist__parse_list_entry(self, s);
+		*sep = ',';
+		if (err != 0)
+			return err;
+		s = sep + 1;
+	}
+
+	return *s ? strlist__parse_list_entry(self, s) : 0;
+}
+
+struct strlist *strlist__new(bool dupstr, const char *slist)
+{
+	struct strlist *self = malloc(sizeof(*self));
+
+	if (self != NULL) {
+		self->entries = RB_ROOT;
+		self->dupstr = dupstr;
+		if (slist && strlist__parse_list(self, slist) != 0)
+			goto out_error;
+	}
+
+	return self;
+out_error:
+	free(self);
+	return NULL;
+}
+
+void strlist__delete(struct strlist *self)
+{
+	if (self != NULL) {
+		struct str_node *pos;
+		struct rb_node *next = rb_first(&self->entries);
+
+		while (next) {
+			pos = rb_entry(next, struct str_node, rb_node);
+			next = rb_next(&pos->rb_node);
+			strlist__remove(self, pos);
+		}
+		self->entries = RB_ROOT;
+		free(self);
+	}
+}
diff --git a/tools/perf/util/strlist.h b/tools/perf/util/strlist.h
new file mode 100644
index 0000000..2fb117f
--- /dev/null
+++ b/tools/perf/util/strlist.h
@@ -0,0 +1,32 @@
+#ifndef STRLIST_H_
+#define STRLIST_H_
+
+#include "rbtree.h"
+#include <stdbool.h>
+
+struct str_node {
+	struct rb_node rb_node;
+	const char     *s;
+};
+
+struct strlist {
+	struct rb_root entries;
+	bool dupstr;
+};
+
+struct strlist *strlist__new(bool dupstr, const char *slist);
+void strlist__delete(struct strlist *self);
+
+void strlist__remove(struct strlist *self, struct str_node *sn);
+int strlist__load(struct strlist *self, const char *filename);
+int strlist__add(struct strlist *self, const char *str);
+
+bool strlist__has_entry(struct strlist *self, const char *entry);
+
+static inline bool strlist__empty(const struct strlist *self)
+{
+	return rb_first(&self->entries) == NULL;
+}
+
+int strlist__parse_list(struct strlist *self, const char *s);
+#endif /* STRLIST_H_ */
-- 
1.6.2.5

[PATCH tip 2/3] perf_counter tools: Add --comms parameter to 'perf report'

[Arnaldo Carvalho de Melo]

So that we can filter by comm. Symbols in other comms won't be accounted
for.

Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/Documentation/perf-report.txt |    4 +++
 tools/perf/builtin-report.c              |   33 ++++++++++++++++++++---------
 2 files changed, 27 insertions(+), 10 deletions(-)

diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt
index 13d85ca..4c44ef1 100644
--- a/tools/perf/Documentation/perf-report.txt
+++ b/tools/perf/Documentation/perf-report.txt
@@ -24,6 +24,10 @@ OPTIONS
 --dsos=::
 	Only consider symbols in these dsos. CSV that understands
 	file://filename entries.
+-C::
+--comms=::
+	Only consider symbols in these comms. CSV that understands
+	file://filename entries.
 
 SEE ALSO
 --------
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 7c6b6e7..8143477 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -33,8 +33,8 @@ static char		*vmlinux = NULL;
 
 static char		default_sort_order[] = "comm,dso";
 static char		*sort_order = default_sort_order;
-static char		*dso_list_str;
-static struct strlist	*dso_list;
+static char		*dso_list_str, *comm_list_str;
+static struct strlist	*dso_list, *comm_list;
 
 static int		input;
 static int		show_mask = SHOW_KERNEL | SHOW_USER | SHOW_HV;
@@ -240,7 +240,7 @@ static u64 vdso__map_ip(struct map *map, u64 ip)
 
 static inline int is_anon_memory(const char *filename)
 {
-     return strcmp(filename, "//anon") == 0;
+	return strcmp(filename, "//anon") == 0;
 }
 
 static struct map *map__new(struct mmap_event *event)
@@ -1253,6 +1253,9 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head)
 		return -1;
 	}
 
+	if (comm_list && !strlist__has_entry(comm_list, thread->comm))
+		return 0;
+
 	if (event->header.misc & PERF_EVENT_MISC_KERNEL) {
 		show = SHOW_KERNEL;
 		level = 'k';
@@ -1667,6 +1670,8 @@ static const struct option options[] = {
 	OPT_BOOLEAN('c', "callchain", &callchain, "Display callchains"),
 	OPT_STRING('d', "dsos", &dso_list_str, "dso[,dso...]",
 		   "only consider symbols in these dsos"),
+	OPT_STRING('C', "comms", &comm_list_str, "comm[,comm...]",
+		   "only consider symbols in these comms"),
 	OPT_END()
 };
 
@@ -1685,6 +1690,19 @@ static void setup_sorting(void)
 	free(str);
 }
 
+static void setup_list(struct strlist **list, const char *list_str,
+		       const char *list_name)
+{
+	if (list_str) {
+		*list = strlist__new(true, list_str);
+		if (!*list) {
+			fprintf(stderr, "problems parsing %s list\n",
+				list_name);
+			exit(129);
+		}
+	}
+}
+
 int cmd_report(int argc, const char **argv, const char *prefix)
 {
 	symbol__init();
@@ -1706,13 +1724,8 @@ int cmd_report(int argc, const char **argv, const char *prefix)
 	if (argc)
 		usage_with_options(report_usage, options);
 
-	if (dso_list_str) {
-		dso_list = strlist__new(true, dso_list_str);
-		if (!dso_list) {
-			fprintf(stderr, "problems parsing dso list\n");
-			exit(129);
-		}
-	}
+	setup_list(&dso_list, dso_list_str, "dso");
+	setup_list(&comm_list, comm_list_str, "comm");
 
 	setup_pager();
 
-- 
1.6.2.5

[PATCH tip 3/3] perf_counter tools: Add --symbols parameter to 'perf report'

[Arnaldo Carvalho de Melo]

So that we can filter by symbol name.

The 'pfunct' utility in the 'dwarves' package can be used to create a
file with the functions one wants.

Example:

[acme@doppio pahole]$ pfunct /usr/lib/debug/usr/lib64/libdw-0.141.so.debug | grep dwarf > /tmp/dwarf.symbols
[acme@doppio pahole]$ wc -l /tmp/dwarf.symbols
93 /tmp/dwarf.symbols
[acme@doppio pahole]$ head -3 /tmp/dwarf.symbols
dwfl_addrdwarf
dwfl_module_getdwarf
dwfl_getdwarf
[acme@doppio pahole]$ perf report --sort comm,dso,symbol --comms pahole --dsos /usr/lib64/libdw-0.141.so --symbols file:///tmp/dwarf.symbols

    33.99%            pahole  /usr/lib64/libdw-0.141.so  [.] dwarf_tag
    29.07%            pahole  /usr/lib64/libdw-0.141.so  [.] dwarf_decl_file
    27.71%            pahole  /usr/lib64/libdw-0.141.so  [.] dwarf_getsrclines
     4.54%            pahole  /usr/lib64/libdw-0.141.so  0x00000000007400
     3.93%            pahole  /usr/lib64/libdw-0.141.so  [.] dwarf_decl_line
     0.46%            pahole  /usr/lib64/libdw-0.141.so  [.] dwarf_getlocation
     0.18%            pahole  /usr/lib64/libdw-0.141.so  [.] __libdwarf_next_prime
     0.13%            pahole  /usr/lib64/libdw-0.141.so  [.] dwarf_diecu

[acme@doppio pahole]$

Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/Documentation/perf-report.txt |    4 ++++
 tools/perf/builtin-report.c              |   10 ++++++++--
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt
index 4c44ef1..8aa3f8c 100644
--- a/tools/perf/Documentation/perf-report.txt
+++ b/tools/perf/Documentation/perf-report.txt
@@ -28,6 +28,10 @@ OPTIONS
 --comms=::
 	Only consider symbols in these comms. CSV that understands
 	file://filename entries.
+-S::
+--symbols=::
+	Only consider these symbols. CSV that understands
+	file://filename entries.
 
 SEE ALSO
 --------
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 8143477..135b783 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -33,8 +33,8 @@ static char		*vmlinux = NULL;
 
 static char		default_sort_order[] = "comm,dso";
 static char		*sort_order = default_sort_order;
-static char		*dso_list_str, *comm_list_str;
-static struct strlist	*dso_list, *comm_list;
+static char		*dso_list_str, *comm_list_str, *sym_list_str;
+static struct strlist	*dso_list, *comm_list, *sym_list;
 
 static int		input;
 static int		show_mask = SHOW_KERNEL | SHOW_USER | SHOW_HV;
@@ -1281,6 +1281,9 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head)
 		if (dso_list && dso && dso->name && !strlist__has_entry(dso_list, dso->name))
 			return 0;
 
+		if (sym_list && sym && !strlist__has_entry(sym_list, sym->name))
+			return 0;
+
 		if (hist_entry__add(thread, map, dso, sym, ip, chain, level, period)) {
 			eprintf("problem incrementing symbol count, skipping event\n");
 			return -1;
@@ -1672,6 +1675,8 @@ static const struct option options[] = {
 		   "only consider symbols in these dsos"),
 	OPT_STRING('C', "comms", &comm_list_str, "comm[,comm...]",
 		   "only consider symbols in these comms"),
+	OPT_STRING('S', "symbols", &sym_list_str, "symbol[,symbol...]",
+		   "only consider these symbols"),
 	OPT_END()
 };
 
@@ -1726,6 +1731,7 @@ int cmd_report(int argc, const char **argv, const char *prefix)
 
 	setup_list(&dso_list, dso_list_str, "dso");
 	setup_list(&comm_list, comm_list_str, "comm");
+	setup_list(&sym_list, sym_list_str, "symbol");
 
 	setup_pager();
 
-- 
1.6.2.5