perf_counter: provide major/minor page fault software events

Provide separate sw counters for major and minor page faults.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 9 insertions, 13 deletions

diff --git a/kernel/perf_counter.c b/kernel/perf_counter.c
index 1773c5d7427d..68950a3a52bf 100644
--- a/kernel/perf_counter.c
+++ b/kernel/perf_counter.c
@@ -1503,6 +1503,12 @@ static void perf_swcounter_disable(struct perf_counter *counter)
         perf_swcounter_update(counter);
 }
 
+static const struct hw_perf_counter_ops perf_ops_generic = {
+        .enable         = perf_swcounter_enable,
+        .disable        = perf_swcounter_disable,
+        .read           = perf_swcounter_read,
+};
+
 /*
  * Software counter: cpu wall time clock
  */
@@ -1604,16 +1610,6 @@ static const struct hw_perf_counter_ops perf_ops_task_clock = {
 };
 
 /*
- * Software counter: page faults
- */
-
-static const struct hw_perf_counter_ops perf_ops_page_faults = {
-        .enable         = perf_swcounter_enable,
-        .disable        = perf_swcounter_disable,
-        .read           = perf_swcounter_read,
-};
-
-/*
  * Software counter: context switches
  */
 
@@ -1753,9 +1749,9 @@ sw_perf_counter_init(struct perf_counter *counter)
                         hw_ops = &perf_ops_cpu_clock;
                 break;
         case PERF_COUNT_PAGE_FAULTS:
-                if (!(counter->hw_event.exclude_user ||
-                      counter->hw_event.exclude_kernel))
-                        hw_ops = &perf_ops_page_faults;
+        case PERF_COUNT_PAGE_FAULTS_MIN:
+        case PERF_COUNT_PAGE_FAULTS_MAJ:
+                hw_ops = &perf_ops_generic;
                 break;
         case PERF_COUNT_CONTEXT_SWITCHES:
                 if (!counter->hw_event.exclude_kernel)