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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2011-01-05 12:47:55 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2011-01-05 12:47:28 +0100 |
| commit | 37e8952174c6c239d1c86125e032fd6ad107a3e6 (patch) | |
| tree | 0352a8b0401b02aa448629a4d7059fedf6203868 | |
| parent | 90adac58d1a4daf3560739ff5b76497d5ece16c4 (diff) | |
| download | kernel_samsung_aries-37e8952174c6c239d1c86125e032fd6ad107a3e6.zip kernel_samsung_aries-37e8952174c6c239d1c86125e032fd6ad107a3e6.tar.gz kernel_samsung_aries-37e8952174c6c239d1c86125e032fd6ad107a3e6.tar.bz2 | |
[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>
| -rw-r--r-- | arch/s390/include/asm/cputime.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/include/asm/cputime.h b/arch/s390/include/asm/cputime.h index 40e2ab0..0814348 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) |