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Subject[PATCH AUTOSEL 4.18 34/59] s390/perf: Change CPUM_CF return code in event init function
From: Thomas Richter <>

[ Upstream commit 0bb2ae1b26e1fb7543ec7474cdd374ac4b88c4da ]

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 <>
Reviewed-by: Hendrik Brueckner <>
Signed-off-by: Martin Schwidefsky <>
Signed-off-by: Sasha Levin <>
arch/s390/kernel/perf_cpum_cf.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/s390/kernel/perf_cpum_cf.c b/arch/s390/kernel/perf_cpum_cf.c
index cc085e2d2ce9..74091fd3101e 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;

- return -EINVAL;
+ return -ENOENT;

/* Obtain the counter set to which the specified counter belongs */
set = get_counter_set(ev);
 \ /
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