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authorWill Deacon <will.deacon@arm.com>2012-07-04 18:15:42 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2012-07-05 09:50:56 +0100
commitfdeb8e35fd59e79dec385f98eb4b6d2e3398264b (patch)
treede9be588521f924f0b1c11d8f66a4c9b83543871
parent433e2f307beff8adba241646ce9108544e0c5a03 (diff)
ARM: 7441/1: perf: return -EOPNOTSUPP if requested mode exclusion is unavailable
We currently return -EPERM if the user requests mode exclusion that is not supported by the CPU. This looks pretty confusing from userspace and is inconsistent with other architectures (ppc, x86). This patch returns -EOPNOTSUPP instead. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
-rw-r--r--arch/arm/kernel/perf_event.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c
index 186c8cb982c5..a02eada3aa5d 100644
--- a/arch/arm/kernel/perf_event.c
+++ b/arch/arm/kernel/perf_event.c
@@ -503,7 +503,7 @@ __hw_perf_event_init(struct perf_event *event)
event_requires_mode_exclusion(&event->attr)) {
pr_debug("ARM performance counters do not support "
"mode exclusion\n");
- return -EPERM;
+ return -EOPNOTSUPP;
}
/*