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authorArnaldo Carvalho de Melo <acme@redhat.com>2011-04-14 11:20:14 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2011-04-15 12:52:28 -0300
commit5d2cd90922c778908bd0cd669e572a5b5eafd737 (patch)
tree0467726f17165b6e2461521e9cca4f54c959d6d6 /tools/perf/builtin-top.c
parentdb9a9cbc8142eed008e242e389938689c6feb1ba (diff)
perf evsel: Fix use of inherit
perf stat doesn't mmap and its perfectly fine for it to use task-bound counters with inheritance. So set the attr.inherit on the caller and leave the syscall itself to validate it. When the mmap fails perf_evlist__mmap will just emit a warning if this is the failure reason. Reported-by: Peter Zijlstra <peterz@infradead.org> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> Link: http://lkml.kernel.org/r/20110414170121.GC3229@ghostprotocols.net Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-top.c')
-rw-r--r--tools/perf/builtin-top.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index fc1273e976c..7e3d6e310bf 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -845,9 +845,10 @@ static void start_counters(struct perf_evlist *evlist)
}
attr->mmap = 1;
+ attr->inherit = inherit;
try_again:
if (perf_evsel__open(counter, top.evlist->cpus,
- top.evlist->threads, group, inherit) < 0) {
+ top.evlist->threads, group) < 0) {
int err = errno;
if (err == EPERM || err == EACCES) {