s390/perf: Change CPUM_CF return code in event init function

0bb2ae1b · Thomas Richter <[email protected]> · 2018-10-29 08:11:33 +00:00

The function perf_init_event() creates a new event and
assignes it to a PMU. This a done in a loop over all existing
PMUs. For each listed PMU the event init function is called
and if this function does return any other error than -ENOENT,
the loop is terminated the creation of the event fails.

If the event is invalid, return -ENOENT to try other PMUs.

Signed-off-by: Thomas Richter <[email protected]>
Reviewed-by: Hendrik Brueckner <[email protected]>
Signed-off-by: Martin Schwidefsky <[email protected]>

Commit: 0bb2ae1b26e1fb7543ec7474cdd374ac4b88c4da
Parents: 02522ad7

Changes

1 files changed · +1 −1

File	Status	Add	Del	Content
arch/s390/kernel/perf_cpum_cf.c	modified	+1	−1	View file

arch/s390/kernel/perf_cpum_cf.c

View file

diff --git a/arch/s390/kernel/perf_cpum_cf.c b/arch/s390/kernel/perf_cpum_cf.c
index cc085e2..74091fd 100644
--- a/arch/s390/kernel/perf_cpum_cf.c
+++ b/arch/s390/kernel/perf_cpum_cf.c
@@ -373,7 +373,7 @@ static int __hw_perf_event_init(struct perf_event *event)
 		return -ENOENT;
 
 	if (ev > PERF_CPUM_CF_MAX_CTR)
-		return -EINVAL;
+		return -ENOENT;
 
 	/* Obtain the counter set to which the specified counter belongs */
 	set = get_counter_set(ev);