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| author | Kan Liang <kan.liang@intel.com> | 2015-08-11 13:30:49 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-08-12 19:20:28 +0300 |
| commit | 9e207ddfa20781e56465ce9a537f0a377c9d34fb (patch) | |
| tree | 8eea5617ff1c5e997a591ef8733aae16e1668aee /tools/perf/builtin-report.c | |
| parent | f9db0d0f1b2cf030083c83d3ed3a4bbae6bdc8b7 (diff) | |
| download | linux-9e207ddfa20781e56465ce9a537f0a377c9d34fb.tar.xz | |
perf report: Show call graph from reference events
Introduce --show-ref-call-graph for perf report to print reference
callgraph for no callgraph event.
Here is an example.
perf report --show-ref-call-graph --stdio
# To display the perf.data header info, please use
--header/--header-only options.
#
#
# Total Lost Samples: 0
#
# Samples: 5 of event 'cpu/cpu-cycles,call-graph=fp/'
# Event count (approx.): 144985
#
# Children Self Command Shared Object Symbol
# ........ ........ ....... ................ ........................................
#
72.30% 0.00% sleep [kernel.vmlinux] [k] entry_SYSCALL_64_fastpath
|
---entry_SYSCALL_64_fastpath
|
|--22.62%-- __GI___libc_nanosleep
--77.38%-- [...]
......
# Samples: 6 of event 'cpu/instructions,call-graph=no/', show reference callgraph
# Event count (approx.): 172780
#
# Children Self Command Shared Object Symbol
# ........ ........ ....... ................ ........................................
#
73.16% 0.00% sleep [kernel.vmlinux] [k] entry_SYSCALL_64_fastpath
|
---entry_SYSCALL_64_fastpath
|
|--31.44%-- __GI___libc_nanosleep
--68.56%-- [...]
Signed-off-by: Kan Liang <kan.liang@intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/1439289050-40510-3-git-send-email-kan.liang@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-report.c')
| -rw-r--r-- | tools/perf/builtin-report.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index f301e865001f..62b285e32aa5 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -316,6 +316,11 @@ static size_t hists__fprintf_nr_sample_events(struct hists *hists, struct report if (evname != NULL) ret += fprintf(fp, " of event '%s'", evname); + if (symbol_conf.show_ref_callgraph && + strstr(evname, "call-graph=no")) { + ret += fprintf(fp, ", show reference callgraph"); + } + if (rep->mem_mode) { ret += fprintf(fp, "\n# Total weight : %" PRIu64, nr_events); ret += fprintf(fp, "\n# Sort order : %s", sort_order ? : default_mem_sort_order); @@ -740,6 +745,8 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused) itrace_parse_synth_opts), OPT_BOOLEAN(0, "full-source-path", &srcline_full_filename, "Show full source file name path for source lines"), + OPT_BOOLEAN(0, "show-ref-call-graph", &symbol_conf.show_ref_callgraph, + "Show callgraph from reference event"), OPT_END() }; struct perf_data_file file = { |