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| author | Adrian Hunter <adrian.hunter@intel.com> | 2020-04-29 18:07:46 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2020-05-05 16:35:29 -0300 |
| commit | ec90e42ce5142c4ed2a0061fe23bd4495428c52b (patch) | |
| tree | 8b5f12fcebe1d645ad67b7eeda32236b0d929a03 /tools/perf/util | |
| parent | cf888e08a030b7430889d0c5c804508c09dad843 (diff) | |
| download | lwn-ec90e42ce5142c4ed2a0061fe23bd4495428c52b.tar.gz lwn-ec90e42ce5142c4ed2a0061fe23bd4495428c52b.zip | |
perf auxtrace: Add option to synthesize branch stack for regular events
There is an existing option to synthesize branch stacks for synthesized
events. Add a new option to synthesize branch stacks for regular events.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lore.kernel.org/lkml/20200429150751.12570-5-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util')
| -rw-r--r-- | tools/perf/util/auxtrace.c | 6 | ||||
| -rw-r--r-- | tools/perf/util/auxtrace.h | 2 | ||||
| -rw-r--r-- | tools/perf/util/s390-cpumsf.c | 3 |
3 files changed, 9 insertions, 2 deletions
diff --git a/tools/perf/util/auxtrace.c b/tools/perf/util/auxtrace.c index ac6e09965a78..83ea7ca24686 100644 --- a/tools/perf/util/auxtrace.c +++ b/tools/perf/util/auxtrace.c @@ -1464,8 +1464,12 @@ int itrace_parse_synth_opts(const struct option *opt, const char *str, synth_opts->callchain_sz = val; } break; + case 'L': case 'l': - synth_opts->last_branch = true; + if (p[-1] == 'L') + synth_opts->add_last_branch = true; + else + synth_opts->last_branch = true; synth_opts->last_branch_sz = PERF_ITRACE_DEFAULT_LAST_BRANCH_SZ; while (*p == ' ' || *p == ',') diff --git a/tools/perf/util/auxtrace.h b/tools/perf/util/auxtrace.h index dd8a4ff8209e..0220a2e86c16 100644 --- a/tools/perf/util/auxtrace.h +++ b/tools/perf/util/auxtrace.h @@ -77,6 +77,7 @@ enum itrace_period_type { * @add_callchain: add callchain to existing event records * @thread_stack: feed branches to the thread_stack * @last_branch: add branch context to 'instruction' events + * @add_last_branch: add branch context to existing event records * @callchain_sz: maximum callchain size * @last_branch_sz: branch context size * @period: 'instructions' events period @@ -105,6 +106,7 @@ struct itrace_synth_opts { bool add_callchain; bool thread_stack; bool last_branch; + bool add_last_branch; unsigned int callchain_sz; unsigned int last_branch_sz; unsigned long long period; diff --git a/tools/perf/util/s390-cpumsf.c b/tools/perf/util/s390-cpumsf.c index 38a942881d1a..f8861998e5bd 100644 --- a/tools/perf/util/s390-cpumsf.c +++ b/tools/perf/util/s390-cpumsf.c @@ -1079,7 +1079,8 @@ static bool check_auxtrace_itrace(struct itrace_synth_opts *itops) itops->pwr_events || itops->errors || itops->dont_decode || itops->calls || itops->returns || itops->callchain || itops->thread_stack || - itops->last_branch || itops->add_callchain; + itops->last_branch || itops->add_callchain || + itops->add_last_branch; if (!ison) return true; pr_err("Unsupported --itrace options specified\n"); |