diff options
| author | Arnaldo Carvalho de Melo | 2015-08-04 17:01:04 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo | 2015-08-05 10:52:32 -0300 |
| commit | 08c987763ad3bc1aef133bcac073198ff86efa85 (patch) | |
| tree | 684b05ff6507e586cb7f93654238d75dcbb30d43 | |
| parent | 2e5e5f876143b147b98d0c0854b5fc577412b05b (diff) | |
perf trace: Remember if the vfs_getname tracepoint/kprobe is in place
So that we can later decide if we will store where to expand the
pathname once we are handling vfs_getname or if we should instead
just go on and straight away print the pointer.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Milian Wolff <mail@milianw.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-ytxk5s5jpc50wahffmlxgxuw@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/builtin-trace.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 3cfca93309ee..aa1e2888c81d 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -1312,6 +1312,7 @@ struct trace { bool show_tool_stats; bool trace_syscalls; bool force; + bool vfs_getname; int trace_pgfaults; }; @@ -2188,19 +2189,20 @@ static int trace__record(struct trace *trace, int argc, const char **argv) static size_t trace__fprintf_thread_summary(struct trace *trace, FILE *fp); -static void perf_evlist__add_vfs_getname(struct perf_evlist *evlist) +static bool perf_evlist__add_vfs_getname(struct perf_evlist *evlist) { struct perf_evsel *evsel = perf_evsel__newtp("probe", "vfs_getname"); if (evsel == NULL) - return; + return false; if (perf_evsel__field(evsel, "pathname") == NULL) { perf_evsel__delete(evsel); - return; + return false; } evsel->handler = trace__vfs_getname; perf_evlist__add(evlist, evsel); + return true; } static int perf_evlist__add_pgfault(struct perf_evlist *evlist, @@ -2330,7 +2332,7 @@ static int trace__run(struct trace *trace, int argc, const char **argv) goto out_error_raw_syscalls; if (trace->trace_syscalls) - perf_evlist__add_vfs_getname(evlist); + trace->vfs_getname = perf_evlist__add_vfs_getname(evlist); if ((trace->trace_pgfaults & TRACE_PFMAJ) && perf_evlist__add_pgfault(evlist, PERF_COUNT_SW_PAGE_FAULTS_MAJ)) { |