[PATCH 3/3] perf-record: Use per-task-per-cpu events for inherited events

[Peter Zijlstra]

Create events with a pid and cpu contraint for inherited events so
that we get a stream per cpu, instead of all cpus contending on a
single stream.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
---
 tools/perf/builtin-record.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6/tools/perf/builtin-record.c
===================================================================
--- linux-2.6.orig/tools/perf/builtin-record.c
+++ linux-2.6/tools/perf/builtin-record.c
@@ -278,7 +278,7 @@ static void create_counter(int counter, 
 
 	attr->mmap		= track;
 	attr->comm		= track;
-	attr->inherit		= (cpu < 0) && inherit;
+	attr->inherit		= inherit;
 	attr->disabled		= 1;
 
 try_again:
@@ -537,7 +537,7 @@ static int __cmd_record(int argc __used,
 	}
 
 
-	if (!system_wide || profile_cpu != -1) {
+	if ((!system_wide && !inherit) || profile_cpu != -1) {
 		open_counters(profile_cpu, target_pid);
 	} else {
 		for (i = 0; i < nr_cpus; i++)

-- 

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/