Merge branch 'perf/urgent' into perf/core

[uclinux-h8/linux.git] / arch / x86 / events / intel / ds.c

diff --git a/arch/x86/events/intel/ds.c b/arch/x86/events/intel/ds.c
index 209bf7c..da67801 100644 (file)
--- a/arch/x86/events/intel/ds.c
+++ b/arch/x86/events/intel/ds.c
@@ -1153,6 +1153,7 @@ static void setup_pebs_sample_data(struct perf_event *event,
        if (pebs == NULL)
                return;
 
+       regs->flags &= ~PERF_EFLAGS_EXACT;
        sample_type = event->attr.sample_type;
        dsrc = sample_type & PERF_SAMPLE_DATA_SRC;
 
@@ -1197,7 +1198,6 @@ static void setup_pebs_sample_data(struct perf_event *event,
         */
        *regs = *iregs;
        regs->flags = pebs->flags;
-       set_linear_ip(regs, pebs->ip);
 
        if (sample_type & PERF_SAMPLE_REGS_INTR) {
                regs->ax = pebs->ax;
@@ -1233,13 +1233,22 @@ static void setup_pebs_sample_data(struct perf_event *event,
 #endif
        }
 
-       if (event->attr.precise_ip > 1 && x86_pmu.intel_cap.pebs_format >= 2) {
-               regs->ip = pebs->real_ip;
-               regs->flags |= PERF_EFLAGS_EXACT;
-       } else if (event->attr.precise_ip > 1 && intel_pmu_pebs_fixup_ip(regs))
-               regs->flags |= PERF_EFLAGS_EXACT;
-       else
-               regs->flags &= ~PERF_EFLAGS_EXACT;
+       if (event->attr.precise_ip > 1) {
+               /* Haswell and later have the eventing IP, so use it: */
+               if (x86_pmu.intel_cap.pebs_format >= 2) {
+                       set_linear_ip(regs, pebs->real_ip);
+                       regs->flags |= PERF_EFLAGS_EXACT;
+               } else {
+                       /* Otherwise use PEBS off-by-1 IP: */
+                       set_linear_ip(regs, pebs->ip);
+
+                       /* ... and try to fix it up using the LBR entries: */
+                       if (intel_pmu_pebs_fixup_ip(regs))
+                               regs->flags |= PERF_EFLAGS_EXACT;
+               }
+       } else
+               set_linear_ip(regs, pebs->ip);
+
 
        if ((sample_type & (PERF_SAMPLE_ADDR | PERF_SAMPLE_PHYS_ADDR)) &&
            x86_pmu.intel_cap.pebs_format >= 1)