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authorArnaldo Carvalho de Melo <acme@redhat.com>2015-02-19 21:51:50 -0800
committerArnaldo Carvalho de Melo <acme@redhat.com>2015-02-22 22:13:54 -0300
commit0808921a14ffa170186288508c807f2166b7d8df (patch)
tree30faefcd5934cd959050fe6aa473ab89118c8153 /tools/perf/builtin-trace.c
parent8a26ce4e544659256349551283414df504889a59 (diff)
perf trace: Only insert blank duration bracket when tracing syscalls
When printing just events, i.e. '--no-sys --ev some:events' it makes no sense to waste screen space. Before: # trace --no-sys --ev probe:* 84481.704 ( ): probe:vfs_getname:(ffffffff811ed023) pathname="/etc/services") 84481.892 ( ): probe:vfs_getname:(ffffffff811ed023) pathname="/etc/services") 84482.230 ( ): probe:vfs_getname:(ffffffff811ed023) pathname="/etc/resolv.conf") 84482.481 ( ): probe:vfs_getname:(ffffffff811ed023) pathname="/etc/hosts") 85097.725 ( ): probe:vfs_getname:(ffffffff811ed023) pathname="/root" # After: # trace --no-sys --ev probe:* 0.000 probe:vfs_getname:(ffffffff811ed023) pathname="/root") 1.711 probe:vfs_getname:(ffffffff811ed023) pathname="/etc/localtime") 2.103 probe:vfs_getname:(ffffffff811ed023) pathname="/etc/localtime") ^C# Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> 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: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-jhryxgnam8zecq0q0wsy6pyb@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.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index b1c1df9bfb26..3a696aa70630 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -1840,7 +1840,11 @@ static int trace__event_handler(struct trace *trace, struct perf_evsel *evsel,
{
trace__printf_interrupted_entry(trace, sample);
trace__fprintf_tstamp(trace, sample->time, trace->output);
- fprintf(trace->output, "(%9.9s): %s:", " ", evsel->name);
+
+ if (trace->trace_syscalls)
+ fprintf(trace->output, "( ): ");
+
+ fprintf(trace->output, "%s:", evsel->name);
if (evsel->tp_format) {
event_format__fprintf(evsel->tp_format, sample->cpu,