[POWERPC] Use __get_cpu_var in time.c

Use __get_cpu_var(x) instead of per_cpu(x, smp_processor_id()), as it
is optimized on ppc64 to access the current cpu's per-cpu offset directly;
it's local_paca.offset instead of TOC->paca[local_paca->processor_id].offset.

This is the trivial portion, two functions with one use each.

Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index cc82fd675f91..888c65726ebd 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -327,7 +327,7 @@ void calculate_steal_time(void)
 
         if (!cpu_has_feature(CPU_FTR_PURR))
                 return;
-        pme = &per_cpu(cpu_purr_data, smp_processor_id());
+        pme = &__get_cpu_var(cpu_purr_data);
         if (!pme->initialized)
                 return;         /* this can happen in early boot */
         tb = mftb();
@@ -352,7 +352,7 @@ static void snapshot_purr(void)
         if (!cpu_has_feature(CPU_FTR_PURR))
                 return;
         local_irq_save(flags);
-        pme = &per_cpu(cpu_purr_data, smp_processor_id());
+        pme = &__get_cpu_var(cpu_purr_data);
         pme->tb = mftb();
         pme->purr = mfspr(SPRN_PURR);
         pme->initialized = 1;