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authorHeiko Carstens <heiko.carstens@de.ibm.com>2011-01-05 12:47:55 +0100
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>2011-01-05 12:47:28 +0100
commit37e8952174c6c239d1c86125e032fd6ad107a3e6 (patch)
tree0352a8b0401b02aa448629a4d7059fedf6203868 /arch/s390/include
parent90adac58d1a4daf3560739ff5b76497d5ece16c4 (diff)
downloadlinux-linaro-android-37e8952174c6c239d1c86125e032fd6ad107a3e6.tar.gz
[S390] nohz: optimize arch_needs_cpu()
arch_needs_cpu() gets always executed on the current cpu. Therefore the cpu parameter can be ignored it is possible to use __get_cpu_var() instead of per_cpu() to access the per_cpu variable, which will generate better code. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include')
-rw-r--r--arch/s390/include/asm/cputime.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/include/asm/cputime.h b/arch/s390/include/asm/cputime.h
index 40e2ab0fa3f..08143487829 100644
--- a/arch/s390/include/asm/cputime.h
+++ b/arch/s390/include/asm/cputime.h
@@ -202,7 +202,7 @@ static inline void s390_idle_check(struct pt_regs *regs, __u64 int_clock,
static inline int s390_nohz_delay(int cpu)
{
- return per_cpu(s390_idle, cpu).nohz_delay != 0;
+ return __get_cpu_var(s390_idle).nohz_delay != 0;
}
#define arch_needs_cpu(cpu) s390_nohz_delay(cpu)