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perf record: Use per-task-per-cpu events for inherited events

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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 <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: [email protected]
Cc: Paul Mackerras <[email protected]>
LKML-Reference: <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
Peter Zijlstra 2009-12-16 17:55:56 +01:00 • committed by Ingo Molnar
commit 60ab271617
1 changed files with 2 additions and 2 deletions
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4
tools/perf/builtin-record.c
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@ -278,7 +278,7 @@ static void create_counter(int counter, int cpu, pid_t pid)
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, const char **argv)
}
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++)