[PATCH 0/3] perf trace enhancements - v2

[PATCH 0/3] perf trace enhancements - v2

[David Ahern]

Arnaldo:

A couple of enhancements to perf-trace: ability to analyze events from a
file and when processing a file limit the analysis to a given set of
pid and tids.


David Ahern (3):
  perf evlist: Add tracepoint lookup by name
  perf trace: Add option to analyze events in a file versus live - v2
  perf trace: Honor target pid / tid options when analyzing a file

 tools/perf/Documentation/perf-trace.txt |    4 +
 tools/perf/builtin-trace.c              |  141 ++++++++++++++++++++++++++++++-
 tools/perf/util/evlist.c                |   15 ++++
 tools/perf/util/evlist.h                |    4 +
 4 files changed, 162 insertions(+), 2 deletions(-)

-- 
1.7.10.1

[PATCH 1/3] perf evlist: Add tracepoint lookup by name

[David Ahern]

Will be used by upcoming perf-trace replay option.

Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
---
 tools/perf/util/evlist.c |   15 +++++++++++++++
 tools/perf/util/evlist.h |    4 ++++
 2 files changed, 19 insertions(+)

diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 1f5105a..c0e43ee 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -210,6 +210,21 @@ perf_evlist__find_tracepoint_by_id(struct perf_evlist *evlist, int id)
 	return NULL;
 }
 
+struct perf_evsel *
+perf_evlist__find_tracepoint_by_name(struct perf_evlist *evlist,
+				     const char *name)
+{
+	struct perf_evsel *evsel;
+
+	list_for_each_entry(evsel, &evlist->entries, node) {
+		if ((evsel->attr.type == PERF_TYPE_TRACEPOINT) &&
+		    (strcmp(evsel->name, name) == 0))
+			return evsel;
+	}
+
+	return NULL;
+}
+
 int perf_evlist__add_newtp(struct perf_evlist *evlist,
 			   const char *sys, const char *name, void *handler)
 {
diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h
index 327abab..8a509e2 100644
--- a/tools/perf/util/evlist.h
+++ b/tools/perf/util/evlist.h
@@ -71,6 +71,10 @@ int perf_evlist__set_filter(struct perf_evlist *evlist, const char *filter);
 struct perf_evsel *
 perf_evlist__find_tracepoint_by_id(struct perf_evlist *evlist, int id);
 
+struct perf_evsel *
+perf_evlist__find_tracepoint_by_name(struct perf_evlist *evlist,
+				     const char *name);
+
 void perf_evlist__id_add(struct perf_evlist *evlist, struct perf_evsel *evsel,
 			 int cpu, int thread, u64 id);
 
-- 
1.7.10.1

[PATCH 2/3] perf trace: Add option to analyze events in a file versus live - v2

[David Ahern]

Allows capture of raw_syscall:* events and analyzed at a later
time.

v2: change -i option from inherit to input name for consistency with
    other perf commands

Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
---
 tools/perf/Documentation/perf-trace.txt |    4 ++
 tools/perf/builtin-trace.c              |   98 ++++++++++++++++++++++++++++++-
 2 files changed, 100 insertions(+), 2 deletions(-)

diff --git a/tools/perf/Documentation/perf-trace.txt b/tools/perf/Documentation/perf-trace.txt
index fe19811..daccd2c 100644
--- a/tools/perf/Documentation/perf-trace.txt
+++ b/tools/perf/Documentation/perf-trace.txt
@@ -74,6 +74,10 @@ the thread executes on the designated CPUs. Default is to monitor all CPUs.
 --sched:
 	Accrue thread runtime and provide a summary at the end of the session.
 
+-i
+--input
+	Process events from a given perf data file.
+
 SEE ALSO
 --------
 linkperf:perf-record[1], linkperf:perf-script[1]
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index b72afc7..a03c777 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -4,6 +4,7 @@
 #include "util/debug.h"
 #include "util/evlist.h"
 #include "util/machine.h"
+#include "util/session.h"
 #include "util/thread.h"
 #include "util/parse-options.h"
 #include "util/strlist.h"
@@ -648,6 +649,36 @@ out_dump:
 	return 0;
 }
 
+static int trace__process_sample(struct perf_tool *tool,
+				 union perf_event *event __maybe_unused,
+				 struct perf_sample *sample,
+				 struct perf_evsel *evsel,
+				 struct machine *machine __maybe_unused)
+{
+	struct trace *trace = container_of(tool, struct trace, tool);
+	int err = 0;
+
+	tracepoint_handler handler = evsel->handler.func;
+
+	if (trace->base_time == 0)
+		trace->base_time = sample->time;
+
+	if (handler)
+		handler(trace, evsel, sample);
+
+	return err;
+}
+
+static bool
+perf_session__has_tp(struct perf_session *session, const char *name)
+{
+	struct perf_evsel *evsel;
+
+	evsel = perf_evlist__find_tracepoint_by_name(session->evlist, name);
+
+	return evsel != NULL;
+}
+
 static int trace__run(struct trace *trace, int argc, const char **argv)
 {
 	struct perf_evlist *evlist = perf_evlist__new();
@@ -787,6 +818,65 @@ out:
 	return err;
 }
 
+static int trace__replay(struct trace *trace)
+{
+	const struct perf_evsel_str_handler handlers[] = {
+		{ "raw_syscalls:sys_enter",  trace__sys_enter, },
+		{ "raw_syscalls:sys_exit",   trace__sys_exit, },
+	};
+
+	struct perf_session *session;
+	int err = -1;
+
+	trace->tool.sample	  = trace__process_sample;
+	trace->tool.mmap	  = perf_event__process_mmap;
+	trace->tool.comm	  = perf_event__process_comm;
+	trace->tool.exit	  = perf_event__process_exit;
+	trace->tool.fork	  = perf_event__process_fork;
+	trace->tool.attr	  = perf_event__process_attr;
+	trace->tool.tracing_data = perf_event__process_tracing_data;
+	trace->tool.build_id	  = perf_event__process_build_id;
+
+	trace->tool.ordered_samples = true;
+	trace->tool.ordering_requires_timestamps = true;
+
+	/* add tid to output */
+	trace->multiple_threads = true;
+
+	if (symbol__init() < 0)
+		return -1;
+
+	session = perf_session__new(input_name, O_RDONLY, 0, false,
+				    &trace->tool);
+	if (session == NULL)
+		return -ENOMEM;
+
+	err = perf_session__set_tracepoints_handlers(session, handlers);
+	if (err)
+		goto out;
+
+	if (!perf_session__has_tp(session, "raw_syscalls:sys_enter")) {
+		pr_err("Data file does not have raw_syscalls:sys_enter events\n");
+		goto out;
+	}
+
+	if (!perf_session__has_tp(session, "raw_syscalls:sys_exit")) {
+		pr_err("Data file does not have raw_syscalls:sys_exit events\n");
+		goto out;
+	}
+
+	setup_pager();
+
+	err = perf_session__process_events(session, &trace->tool);
+	if (err)
+		pr_err("Failed to process events, error %d", err);
+
+out:
+	perf_session__delete(session);
+
+	return err;
+}
+
 static size_t trace__fprintf_threads_header(FILE *fp)
 {
 	size_t printed;
@@ -888,6 +978,7 @@ int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused)
 	OPT_STRING('e', "expr", &ev_qualifier_str, "expr",
 		    "list of events to trace"),
 	OPT_STRING('o', "output", &output_name, "file", "output file name"),
+	OPT_STRING('i', "input", &input_name, "file", "Analyze events in file"),
 	OPT_STRING('p', "pid", &trace.opts.target.pid, "pid",
 		    "trace events on existing process id"),
 	OPT_STRING('t', "tid", &trace.opts.target.tid, "tid",
@@ -896,7 +987,7 @@ int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused)
 		    "system-wide collection from all CPUs"),
 	OPT_STRING('C', "cpu", &trace.opts.target.cpu_list, "cpu",
 		    "list of cpus to monitor"),
-	OPT_BOOLEAN('i', "no-inherit", &trace.opts.no_inherit,
+	OPT_BOOLEAN(0, "no-inherit", &trace.opts.no_inherit,
 		    "child tasks do not inherit counters"),
 	OPT_UINTEGER('m', "mmap-pages", &trace.opts.mmap_pages,
 		     "number of mmap data pages"),
@@ -954,7 +1045,10 @@ int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused)
 	if (!argc && perf_target__none(&trace.opts.target))
 		trace.opts.target.system_wide = true;
 
-	err = trace__run(&trace, argc, argv);
+	if (input_name)
+		err = trace__replay(&trace);
+	else
+		err = trace__run(&trace, argc, argv);
 
 	if (trace.sched && !err)
 		trace__fprintf_thread_summary(&trace, trace.output);
-- 
1.7.10.1

[PATCH 3/3] perf trace: Honor target pid / tid options when analyzing a file

[David Ahern]

Allows capture of raw_syscall events for all processes or threads in a task
and then analyzing specific ones.

Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
---
 tools/perf/builtin-trace.c |   43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index a03c777..ec0c7b3 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -8,6 +8,7 @@
 #include "util/thread.h"
 #include "util/parse-options.h"
 #include "util/strlist.h"
+#include "util/intlist.h"
 #include "util/thread_map.h"
 
 #include <libaudit.h>
@@ -259,6 +260,8 @@ struct trace {
 	unsigned long		nr_events;
 	struct strlist		*ev_qualifier;
 	bool			not_ev_qualifier;
+	struct intlist		*tid_list;
+	struct intlist		*pid_list;
 	bool			sched;
 	bool			multiple_threads;
 	double			duration_filter;
@@ -649,6 +652,18 @@ out_dump:
 	return 0;
 }
 
+static bool skip_sample(struct trace *trace, struct perf_sample *sample)
+{
+	if ((trace->pid_list && intlist__find(trace->pid_list, sample->pid)) ||
+	    (trace->tid_list && intlist__find(trace->tid_list, sample->tid)))
+		return false;
+
+	if (trace->pid_list || trace->tid_list)
+		return true;
+
+	return false;
+}
+
 static int trace__process_sample(struct perf_tool *tool,
 				 union perf_event *event __maybe_unused,
 				 struct perf_sample *sample,
@@ -660,6 +675,9 @@ static int trace__process_sample(struct perf_tool *tool,
 
 	tracepoint_handler handler = evsel->handler.func;
 
+	if (skip_sample(trace, sample))
+		return 0;
+
 	if (trace->base_time == 0)
 		trace->base_time = sample->time;
 
@@ -679,6 +697,27 @@ perf_session__has_tp(struct perf_session *session, const char *name)
 	return evsel != NULL;
 }
 
+static int parse_target_str(struct trace *trace)
+{
+	if (trace->opts.target.pid) {
+		trace->pid_list = intlist__new(trace->opts.target.pid);
+		if (trace->pid_list == NULL) {
+			pr_err("Error parsing process id string\n");
+			return -EINVAL;
+		}
+	}
+
+	if (trace->opts.target.tid) {
+		trace->tid_list = intlist__new(trace->opts.target.tid);
+		if (trace->tid_list == NULL) {
+			pr_err("Error parsing thread id string\n");
+			return -EINVAL;
+		}
+	}
+
+	return 0;
+}
+
 static int trace__run(struct trace *trace, int argc, const char **argv)
 {
 	struct perf_evlist *evlist = perf_evlist__new();
@@ -865,6 +904,10 @@ static int trace__replay(struct trace *trace)
 		goto out;
 	}
 
+	err = parse_target_str(trace);
+	if (err != 0)
+		goto out;
+
 	setup_pager();
 
 	err = perf_session__process_events(session, &trace->tool);
-- 
1.7.10.1

[tip:perf/core] perf evlist: Add tracepoint lookup by name

[tip-bot for David Ahern]

Commit-ID:  a2f2804a7142b043dafd39f21b86777840e1a78c
Gitweb:     http://git.kernel.org/tip/a2f2804a7142b043dafd39f21b86777840e1a78c
Author:     David Ahern <dsahern@gmail.com>
AuthorDate: Wed, 28 Aug 2013 22:29:51 -0600
Committer:  Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Thu, 29 Aug 2013 17:41:02 -0300

perf evlist: Add tracepoint lookup by name

Will be used by upcoming perf-trace replay option.

Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1377750593-48046-2-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/util/evlist.c | 15 +++++++++++++++
 tools/perf/util/evlist.h |  4 ++++
 2 files changed, 19 insertions(+)

diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 6a629af..5df4ca9 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -208,6 +208,21 @@ perf_evlist__find_tracepoint_by_id(struct perf_evlist *evlist, int id)
 	return NULL;
 }
 
+struct perf_evsel *
+perf_evlist__find_tracepoint_by_name(struct perf_evlist *evlist,
+				     const char *name)
+{
+	struct perf_evsel *evsel;
+
+	list_for_each_entry(evsel, &evlist->entries, node) {
+		if ((evsel->attr.type == PERF_TYPE_TRACEPOINT) &&
+		    (strcmp(evsel->name, name) == 0))
+			return evsel;
+	}
+
+	return NULL;
+}
+
 int perf_evlist__add_newtp(struct perf_evlist *evlist,
 			   const char *sys, const char *name, void *handler)
 {
diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h
index ab95d72..841a394 100644
--- a/tools/perf/util/evlist.h
+++ b/tools/perf/util/evlist.h
@@ -74,6 +74,10 @@ int perf_evlist__set_filter(struct perf_evlist *evlist, const char *filter);
 struct perf_evsel *
 perf_evlist__find_tracepoint_by_id(struct perf_evlist *evlist, int id);
 
+struct perf_evsel *
+perf_evlist__find_tracepoint_by_name(struct perf_evlist *evlist,
+				     const char *name);
+
 void perf_evlist__id_add(struct perf_evlist *evlist, struct perf_evsel *evsel,
 			 int cpu, int thread, u64 id);
 

[tip:perf/core] perf trace: Add option to analyze events in a file versus live

[tip-bot for David Ahern]

Commit-ID:  6810fc915f7a89d8134edb3996dbbf8eac386c26
Gitweb:     http://git.kernel.org/tip/6810fc915f7a89d8134edb3996dbbf8eac386c26
Author:     David Ahern <dsahern@gmail.com>
AuthorDate: Wed, 28 Aug 2013 22:29:52 -0600
Committer:  Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Thu, 29 Aug 2013 17:42:34 -0300

perf trace: Add option to analyze events in a file versus live

Allows capture of raw_syscall:* events and analyzed at a later time.

v2: change -i option from inherit to input name for consistency with
    other perf commands

Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1377750593-48046-3-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/Documentation/perf-trace.txt |  4 ++
 tools/perf/builtin-trace.c              | 98 ++++++++++++++++++++++++++++++++-
 2 files changed, 100 insertions(+), 2 deletions(-)

diff --git a/tools/perf/Documentation/perf-trace.txt b/tools/perf/Documentation/perf-trace.txt
index fe19811..daccd2c 100644
--- a/tools/perf/Documentation/perf-trace.txt
+++ b/tools/perf/Documentation/perf-trace.txt
@@ -74,6 +74,10 @@ the thread executes on the designated CPUs. Default is to monitor all CPUs.
 --sched:
 	Accrue thread runtime and provide a summary at the end of the session.
 
+-i
+--input
+	Process events from a given perf data file.
+
 SEE ALSO
 --------
 linkperf:perf-record[1], linkperf:perf-script[1]
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 88387c5..2a6ebe1 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -4,6 +4,7 @@
 #include "util/debug.h"
 #include "util/evlist.h"
 #include "util/machine.h"
+#include "util/session.h"
 #include "util/thread.h"
 #include "util/parse-options.h"
 #include "util/strlist.h"
@@ -652,6 +653,36 @@ out_dump:
 	return 0;
 }
 
+static int trace__process_sample(struct perf_tool *tool,
+				 union perf_event *event __maybe_unused,
+				 struct perf_sample *sample,
+				 struct perf_evsel *evsel,
+				 struct machine *machine __maybe_unused)
+{
+	struct trace *trace = container_of(tool, struct trace, tool);
+	int err = 0;
+
+	tracepoint_handler handler = evsel->handler.func;
+
+	if (trace->base_time == 0)
+		trace->base_time = sample->time;
+
+	if (handler)
+		handler(trace, evsel, sample);
+
+	return err;
+}
+
+static bool
+perf_session__has_tp(struct perf_session *session, const char *name)
+{
+	struct perf_evsel *evsel;
+
+	evsel = perf_evlist__find_tracepoint_by_name(session->evlist, name);
+
+	return evsel != NULL;
+}
+
 static int trace__run(struct trace *trace, int argc, const char **argv)
 {
 	struct perf_evlist *evlist = perf_evlist__new();
@@ -791,6 +822,65 @@ out:
 	return err;
 }
 
+static int trace__replay(struct trace *trace)
+{
+	const struct perf_evsel_str_handler handlers[] = {
+		{ "raw_syscalls:sys_enter",  trace__sys_enter, },
+		{ "raw_syscalls:sys_exit",   trace__sys_exit, },
+	};
+
+	struct perf_session *session;
+	int err = -1;
+
+	trace->tool.sample	  = trace__process_sample;
+	trace->tool.mmap	  = perf_event__process_mmap;
+	trace->tool.comm	  = perf_event__process_comm;
+	trace->tool.exit	  = perf_event__process_exit;
+	trace->tool.fork	  = perf_event__process_fork;
+	trace->tool.attr	  = perf_event__process_attr;
+	trace->tool.tracing_data = perf_event__process_tracing_data;
+	trace->tool.build_id	  = perf_event__process_build_id;
+
+	trace->tool.ordered_samples = true;
+	trace->tool.ordering_requires_timestamps = true;
+
+	/* add tid to output */
+	trace->multiple_threads = true;
+
+	if (symbol__init() < 0)
+		return -1;
+
+	session = perf_session__new(input_name, O_RDONLY, 0, false,
+				    &trace->tool);
+	if (session == NULL)
+		return -ENOMEM;
+
+	err = perf_session__set_tracepoints_handlers(session, handlers);
+	if (err)
+		goto out;
+
+	if (!perf_session__has_tp(session, "raw_syscalls:sys_enter")) {
+		pr_err("Data file does not have raw_syscalls:sys_enter events\n");
+		goto out;
+	}
+
+	if (!perf_session__has_tp(session, "raw_syscalls:sys_exit")) {
+		pr_err("Data file does not have raw_syscalls:sys_exit events\n");
+		goto out;
+	}
+
+	setup_pager();
+
+	err = perf_session__process_events(session, &trace->tool);
+	if (err)
+		pr_err("Failed to process events, error %d", err);
+
+out:
+	perf_session__delete(session);
+
+	return err;
+}
+
 static size_t trace__fprintf_threads_header(FILE *fp)
 {
 	size_t printed;
@@ -892,6 +982,7 @@ int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused)
 	OPT_STRING('e', "expr", &ev_qualifier_str, "expr",
 		    "list of events to trace"),
 	OPT_STRING('o', "output", &output_name, "file", "output file name"),
+	OPT_STRING('i', "input", &input_name, "file", "Analyze events in file"),
 	OPT_STRING('p', "pid", &trace.opts.target.pid, "pid",
 		    "trace events on existing process id"),
 	OPT_STRING('t', "tid", &trace.opts.target.tid, "tid",
@@ -900,7 +991,7 @@ int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused)
 		    "system-wide collection from all CPUs"),
 	OPT_STRING('C', "cpu", &trace.opts.target.cpu_list, "cpu",
 		    "list of cpus to monitor"),
-	OPT_BOOLEAN('i', "no-inherit", &trace.opts.no_inherit,
+	OPT_BOOLEAN(0, "no-inherit", &trace.opts.no_inherit,
 		    "child tasks do not inherit counters"),
 	OPT_UINTEGER('m', "mmap-pages", &trace.opts.mmap_pages,
 		     "number of mmap data pages"),
@@ -958,7 +1049,10 @@ int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused)
 	if (!argc && perf_target__none(&trace.opts.target))
 		trace.opts.target.system_wide = true;
 
-	err = trace__run(&trace, argc, argv);
+	if (input_name)
+		err = trace__replay(&trace);
+	else
+		err = trace__run(&trace, argc, argv);
 
 	if (trace.sched && !err)
 		trace__fprintf_thread_summary(&trace, trace.output);

[tip:perf/core] perf trace: Honor target pid / tid options when analyzing a file

[tip-bot for David Ahern]

Commit-ID:  bdc896617b4fcaa9c89da9a9c5b72660f6741d46
Gitweb:     http://git.kernel.org/tip/bdc896617b4fcaa9c89da9a9c5b72660f6741d46
Author:     David Ahern <dsahern@gmail.com>
AuthorDate: Wed, 28 Aug 2013 22:29:53 -0600
Committer:  Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Thu, 29 Aug 2013 17:45:39 -0300

perf trace: Honor target pid / tid options when analyzing a file

Allows capture of raw_syscall events for all processes or threads in a
task and then analyzing specific ones.

Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1377750593-48046-4-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/builtin-trace.c | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 2a6ebe1..845facc 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -8,6 +8,7 @@
 #include "util/thread.h"
 #include "util/parse-options.h"
 #include "util/strlist.h"
+#include "util/intlist.h"
 #include "util/thread_map.h"
 
 #include <libaudit.h>
@@ -259,6 +260,8 @@ struct trace {
 	unsigned long		nr_events;
 	struct strlist		*ev_qualifier;
 	bool			not_ev_qualifier;
+	struct intlist		*tid_list;
+	struct intlist		*pid_list;
 	bool			sched;
 	bool			multiple_threads;
 	double			duration_filter;
@@ -653,6 +656,18 @@ out_dump:
 	return 0;
 }
 
+static bool skip_sample(struct trace *trace, struct perf_sample *sample)
+{
+	if ((trace->pid_list && intlist__find(trace->pid_list, sample->pid)) ||
+	    (trace->tid_list && intlist__find(trace->tid_list, sample->tid)))
+		return false;
+
+	if (trace->pid_list || trace->tid_list)
+		return true;
+
+	return false;
+}
+
 static int trace__process_sample(struct perf_tool *tool,
 				 union perf_event *event __maybe_unused,
 				 struct perf_sample *sample,
@@ -664,6 +679,9 @@ static int trace__process_sample(struct perf_tool *tool,
 
 	tracepoint_handler handler = evsel->handler.func;
 
+	if (skip_sample(trace, sample))
+		return 0;
+
 	if (trace->base_time == 0)
 		trace->base_time = sample->time;
 
@@ -683,6 +701,27 @@ perf_session__has_tp(struct perf_session *session, const char *name)
 	return evsel != NULL;
 }
 
+static int parse_target_str(struct trace *trace)
+{
+	if (trace->opts.target.pid) {
+		trace->pid_list = intlist__new(trace->opts.target.pid);
+		if (trace->pid_list == NULL) {
+			pr_err("Error parsing process id string\n");
+			return -EINVAL;
+		}
+	}
+
+	if (trace->opts.target.tid) {
+		trace->tid_list = intlist__new(trace->opts.target.tid);
+		if (trace->tid_list == NULL) {
+			pr_err("Error parsing thread id string\n");
+			return -EINVAL;
+		}
+	}
+
+	return 0;
+}
+
 static int trace__run(struct trace *trace, int argc, const char **argv)
 {
 	struct perf_evlist *evlist = perf_evlist__new();
@@ -869,6 +908,10 @@ static int trace__replay(struct trace *trace)
 		goto out;
 	}
 
+	err = parse_target_str(trace);
+	if (err != 0)
+		goto out;
+
 	setup_pager();
 
 	err = perf_session__process_events(session, &trace->tool);