perf evlist: Add 'system_wide' option
Add an option to cause a selected event to be opened always without a
pid when configured by perf_evsel__config().
This is needed when using the sched_switch tracepoint to follow object
code execution.
sched_switch occurs before the task switch and so it cannot record it in
a context limited to that task. Note that also means that sched_switch
is useless when capturing data per-thread, as is the 'context-switches'
software event for the same reason.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1406786474-9306-9-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index d7f93ce..dbb2a0d 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -85,6 +85,7 @@
bool needs_swap;
bool no_aux_samples;
bool immediate;
+ bool system_wide;
/* parse modifier helper */
int exclude_GH;
int nr_members;