aboutsummaryrefslogtreecommitdiffstats
path: root/arch/s390
diff options
context:
space:
mode:
authorHeiko Carstens <heiko.carstens@de.ibm.com>2011-01-05 06:47:55 -0500
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>2011-01-05 06:47:28 -0500
commit37e8952174c6c239d1c86125e032fd6ad107a3e6 (patch)
tree0352a8b0401b02aa448629a4d7059fedf6203868 /arch/s390
parent90adac58d1a4daf3560739ff5b76497d5ece16c4 (diff)
[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')
-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 40e2ab0fa3f0..081434878296 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,
202 202
203static inline int s390_nohz_delay(int cpu) 203static inline int s390_nohz_delay(int cpu)
204{ 204{
205 return per_cpu(s390_idle, cpu).nohz_delay != 0; 205 return __get_cpu_var(s390_idle).nohz_delay != 0;
206} 206}
207 207
208#define arch_needs_cpu(cpu) s390_nohz_delay(cpu) 208#define arch_needs_cpu(cpu) s390_nohz_delay(cpu)