[PATCH 27/31] tile: Use this_cpu_ptr() for hardware counters

[Christoph Lameter]

Signed-off-by: Christoph Lameter <c...@linux.com>

Index: linux/arch/tile/kernel/perf_event.c
===================================================================
--- linux.orig/arch/tile/kernel/perf_event.c    2014-04-08 09:21:18.820542381 
-0500
+++ linux/arch/tile/kernel/perf_event.c 2014-04-14 13:41:29.866074474 -0500
@@ -590,7 +590,7 @@
  */
 static void tile_pmu_stop(struct perf_event *event, int flags)
 {
-       struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
+       struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
        struct hw_perf_event *hwc = &event->hw;
        int idx = hwc->idx;
 
@@ -616,7 +616,7 @@
  */
 static void tile_pmu_start(struct perf_event *event, int flags)
 {
-       struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
+       struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
        int idx = event->hw.idx;
 
        if (WARN_ON_ONCE(!(event->hw.state & PERF_HES_STOPPED)))
@@ -650,7 +650,7 @@
  */
 static int tile_pmu_add(struct perf_event *event, int flags)
 {
-       struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
+       struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
        struct hw_perf_event *hwc;
        unsigned long mask;
        int b, max_cnt;
@@ -706,7 +706,7 @@
  */
 static void tile_pmu_del(struct perf_event *event, int flags)
 {
-       struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
+       struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
        int i;
 
        /*
@@ -880,14 +880,14 @@
 int tile_pmu_handle_irq(struct pt_regs *regs, int fault)
 {
        struct perf_sample_data data;
-       struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
+       struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
        struct perf_event *event;
        struct hw_perf_event *hwc;
        u64 val;
        unsigned long status;
        int bit;
 
-       __get_cpu_var(perf_irqs)++;
+       __this_cpu_inc(perf_irqs);
 
        if (!atomic_read(&tile_active_events))
                return 0;

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