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Subject[tip:perf/core] perf tools: Add call-graph option support into .perfconfig
Commit-ID:  eb853e80324fa87faf7ae7e1a763ad643f908f2d
Gitweb: http://git.kernel.org/tip/eb853e80324fa87faf7ae7e1a763ad643f908f2d
Author: Jiri Olsa <jolsa@redhat.com>
AuthorDate: Mon, 3 Feb 2014 12:44:42 +0100
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Tue, 18 Feb 2014 09:34:47 -0300

perf tools: Add call-graph option support into .perfconfig

Adding call-graph option support into .perfconfig file, so it's now
possible use call-graph option like:

[top]
call-graph = fp

[record]
call-graph = dwarf,8192

Above options ONLY setup the unwind method. To enable perf record/top to
actually use it the command line option -g/-G must be specified.

The --call-graph option overloads .perfconfig setup.

Assuming above configuration:

$ perf record -g ls
- enables dwarf unwind with user stack size dump 8192 bytes

$ perf top -G
- enables frame pointer unwind

$ perf record --call-graph=fp ls
- enables frame pointer unwind

$ perf top --call-graph=dwarf,4096 ls
- enables dwarf unwind with user stack size dump 4096 bytes

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1391427883-13443-2-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/builtin-record.c | 16 ++++++++++++++++
tools/perf/builtin-top.c | 12 ++++++++++++
tools/perf/perf.h | 1 +
tools/perf/util/evsel.c | 2 +-
4 files changed, 30 insertions(+), 1 deletion(-)

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index af47531..be9e8bc 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -749,6 +749,8 @@ int record_parse_callchain_opt(const struct option *opt,
struct record_opts *opts = opt->value;
int ret;

+ opts->call_graph_enabled = !unset;
+
/* --no-call-graph */
if (unset) {
opts->call_graph = CALLCHAIN_NONE;
@@ -769,6 +771,8 @@ int record_callchain_opt(const struct option *opt,
{
struct record_opts *opts = opt->value;

+ opts->call_graph_enabled = !unset;
+
if (opts->call_graph == CALLCHAIN_NONE)
opts->call_graph = CALLCHAIN_FP;

@@ -776,6 +780,16 @@ int record_callchain_opt(const struct option *opt,
return 0;
}

+static int perf_record_config(const char *var, const char *value, void *cb)
+{
+ struct record *rec = cb;
+
+ if (!strcmp(var, "record.call-graph"))
+ return record_parse_callchain(value, &rec->opts);
+
+ return perf_default_config(var, value, cb);
+}
+
static const char * const record_usage[] = {
"perf record [<options>] [<command>]",
"perf record [<options>] -- <command> [<options>]",
@@ -907,6 +921,8 @@ int cmd_record(int argc, const char **argv, const char *prefix __maybe_unused)
if (rec->evlist == NULL)
return -ENOMEM;

+ perf_config(perf_record_config, rec);
+
argc = parse_options(argc, argv, record_options, record_usage,
PARSE_OPT_STOP_AT_NON_OPTION);
if (!argc && target__none(&rec->opts.target))
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 76cd510..ed99ec4 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -991,6 +991,16 @@ parse_callchain_opt(const struct option *opt, const char *arg, int unset)
return record_parse_callchain_opt(opt, arg, unset);
}

+static int perf_top_config(const char *var, const char *value, void *cb)
+{
+ struct perf_top *top = cb;
+
+ if (!strcmp(var, "top.call-graph"))
+ return record_parse_callchain(value, &top->record_opts);
+
+ return perf_default_config(var, value, cb);
+}
+
static int
parse_percent_limit(const struct option *opt, const char *arg,
int unset __maybe_unused)
@@ -1115,6 +1125,8 @@ int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused)
if (top.evlist == NULL)
return -ENOMEM;

+ perf_config(perf_top_config, &top);
+
argc = parse_options(argc, argv, options, top_usage, 0);
if (argc)
usage_with_options(top_usage, options);
diff --git a/tools/perf/perf.h b/tools/perf/perf.h
index e84fa26..2078f33 100644
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -257,6 +257,7 @@ enum perf_call_graph_mode {
struct record_opts {
struct target target;
int call_graph;
+ bool call_graph_enabled;
bool group;
bool inherit_stat;
bool no_buffering;
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index c6f8ce9..8201abe 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -595,7 +595,7 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts)
attr->mmap_data = track;
}

- if (opts->call_graph) {
+ if (opts->call_graph_enabled) {
perf_evsel__set_sample_bit(evsel, CALLCHAIN);

if (opts->call_graph == CALLCHAIN_DWARF) {

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