perf/x86: Reject non sampling events with precise_ip

[sfrench/cifs-2.6.git] / arch / x86 / events / core.c

diff --git a/arch/x86/events/core.c b/arch/x86/events/core.c
index 019c5887b698af2a5fbf322c7cc5d6d3f8ab7e57..1635c0c8df23a697a93a8a7bd0dbbfd534c3caef 100644 (file)
--- a/arch/x86/events/core.c
+++ b/arch/x86/events/core.c
@@ -505,6 +505,10 @@ int x86_pmu_hw_config(struct perf_event *event)
 
                if (event->attr.precise_ip > precise)
                        return -EOPNOTSUPP;
+
+               /* There's no sense in having PEBS for non sampling events: */
+               if (!is_sampling_event(event))
+                       return -EINVAL;
        }
        /*
         * check that PEBS LBR correction does not conflict with