Commit-ID: 08c987763ad3bc1aef133bcac073198ff86efa85
Gitweb: http://git.kernel.org/tip/08c987763ad3bc1aef133bcac073198ff86efa85
Author: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
AuthorDate: Tue, 4 Aug 2015 17:01:04 -0300
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Wed, 5 Aug 2015 10:52:32 -0300
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@xxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Milian Wolff <mail@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Link: http://lkml.kernel.org/n/tip-ytxk5s5jpc50wahffmlxgxuw@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/builtin-trace.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 3cfca93..aa1e288 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)) {
--
To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
|