[patch] perf_event: Return -EINVAL for Offcore Response Events

[Vince Weaver]

If we really are going to ban raw access to Offcore Response events for a 
while, then we should return a proper error code.  Right now we return "0"
which gives tools the false impression that opening the event worked.

Vince
vweaver1@xxxxxxxxxxxx


diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
index 3a0338b..c6bfa6b 100644
--- a/arch/x86/kernel/cpu/perf_event.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -598,7 +598,7 @@ static int x86_setup_perfctr(struct perf_event *event)
 	 * there's no sane user-space generalization yet:
 	 */
 	if (attr->type == PERF_TYPE_RAW)
-		return 0;
+		return -EINVAL;
 
 	if (attr->type == PERF_TYPE_HW_CACHE)
 		return set_ext_hw_attr(hwc, event);
--
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