AcoSail/kernel_optimize_test
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[POWERPC] Use __get_cpu_var in time.c

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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>
This commit is contained in:
Milton Miller 2007-12-14 15:52:10 +11:00 committed by Paul Mackerras
parent c481887f2b
commit 8b5621f183
1 changed files with 2 additions and 2 deletions
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arch/powerpc/kernel/time.c
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@ -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;