diff options
| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2014-06-17 17:29:24 (GMT) |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2014-06-19 19:13:13 (GMT) |
| commit | 5089f20ee7104bd219cafefa62d83f53e75cc44c (patch) | |
| tree | 259334f6d31b2e4520ae0994fd6255a1867335e8 /tools/perf/builtin-trace.c | |
| parent | 774135344fa8aa044290d030068f92e9a3aab8cc (diff) | |
| download | linux-5089f20ee7104bd219cafefa62d83f53e75cc44c.tar.xz | |
perf trace: Cache the is_exit syscall test
No need to use two strcmp calls per syscall entry, do it just once, when
reading the per syscall info.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-lymtxhz0mg3adyt5e2pssn8f@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-trace.c')
| -rw-r--r-- | tools/perf/builtin-trace.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 28c86e2..5549cee 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -1108,6 +1108,7 @@ struct syscall { struct event_format *tp_format; const char *name; bool filtered; + bool is_exit; struct syscall_fmt *fmt; size_t (**arg_scnprintf)(char *bf, size_t size, struct syscall_arg *arg); void **arg_parm; @@ -1473,6 +1474,8 @@ static int trace__read_syscall_info(struct trace *trace, int id) if (sc->tp_format == NULL) return -1; + sc->is_exit = !strcmp(name, "exit_group") || !strcmp(name, "exit"); + return syscall__set_arg_fmts(sc); } @@ -1643,7 +1646,7 @@ static int trace__sys_enter(struct trace *trace, struct perf_evsel *evsel, printed += syscall__scnprintf_args(sc, msg + printed, 1024 - printed, args, trace, thread); - if (!strcmp(sc->name, "exit_group") || !strcmp(sc->name, "exit")) { + if (sc->is_exit) { if (!trace->duration_filter && !trace->summary_only) { trace__fprintf_entry_head(trace, thread, 1, sample->time, trace->output); fprintf(trace->output, "%-70s\n", ttrace->entry_str); |