Replace __get_cpu_var uses for address calculation with this_cpu_ptr().

Acked-by: James Hogan <james.ho...@imgtec.com>
Signed-off-by: Christoph Lameter <c...@linux.com>

Index: linux/arch/metag/kernel/perf/perf_event.c
===================================================================
--- linux.orig/arch/metag/kernel/perf/perf_event.c      2014-04-14 
13:24:54.921359116 -0500
+++ linux/arch/metag/kernel/perf/perf_event.c   2014-04-14 13:24:54.913359272 
-0500
@@ -258,7 +258,7 @@
 
 static void metag_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);
        struct hw_perf_event *hwc = &event->hw;
        int idx = hwc->idx;
 
@@ -306,7 +306,7 @@
 
 static int metag_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 = &event->hw;
        int idx = 0, ret = 0;
 
@@ -348,7 +348,7 @@
 
 static void metag_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);
        struct hw_perf_event *hwc = &event->hw;
        int idx = hwc->idx;
 
@@ -607,7 +607,7 @@
 
 static void metag_pmu_enable_counter(struct hw_perf_event *event, int idx)
 {
-       struct cpu_hw_events *events = &__get_cpu_var(cpu_hw_events);
+       struct cpu_hw_events *events = this_cpu_ptr(&cpu_hw_events);
        unsigned int config = event->config;
        unsigned int tmp = config & 0xf0;
        unsigned long flags;
@@ -680,7 +680,7 @@
 
 static void metag_pmu_disable_counter(struct hw_perf_event *event, int idx)
 {
-       struct cpu_hw_events *events = &__get_cpu_var(cpu_hw_events);
+       struct cpu_hw_events *events = this_cpu_ptr(&cpu_hw_events);
        unsigned int tmp = 0;
        unsigned long flags;
 
@@ -728,7 +728,7 @@
 
 static void metag_pmu_write_counter(int idx, u32 val)
 {
-       struct cpu_hw_events *events = &__get_cpu_var(cpu_hw_events);
+       struct cpu_hw_events *events = this_cpu_ptr(&cpu_hw_events);
        u32 tmp = 0;
        unsigned long flags;
 
@@ -761,7 +761,7 @@
 static irqreturn_t metag_pmu_counter_overflow(int irq, void *dev)
 {
        int idx = (int)dev;
-       struct cpu_hw_events *cpuhw = &__get_cpu_var(cpu_hw_events);
+       struct cpu_hw_events *cpuhw = this_cpu_ptr(&cpu_hw_events);
        struct perf_event *event = cpuhw->events[idx];
        struct hw_perf_event *hwc = &event->hw;
        struct pt_regs *regs = get_irq_regs();

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