diff options
| author | Cyril Bur <cyrilbur@gmail.com> | 2016-09-23 16:18:10 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-10-04 16:43:06 +1100 |
| commit | 3cee070a13b141b8eb5727c3bfa9920092f87264 (patch) | |
| tree | 5c915a45afba8a0783c377c4e84988a27e64d380 /arch/powerpc/include/asm | |
| parent | b0f16b46988fde02a1e32078f66a3059d7e53bfc (diff) | |
powerpc: Return the new MSR from msr_check_and_set()
msr_check_and_set() always performs a mfmsr() to determine if it needs
to perform an mtmsr(), as mfmsr() can be a costly operation
msr_check_and_set() could return the MSR now on the CPU to avoid
callers of msr_check_and_set having to make their own mfmsr() call.
Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm')
| -rw-r--r-- | arch/powerpc/include/asm/reg.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h index 9dddabc2fced..a8f63bcb71af 100644 --- a/arch/powerpc/include/asm/reg.h +++ b/arch/powerpc/include/asm/reg.h @@ -1250,7 +1250,7 @@ static inline void mtmsr_isync(unsigned long val) : "memory") #endif -extern void msr_check_and_set(unsigned long bits); +extern unsigned long msr_check_and_set(unsigned long bits); extern bool strict_msr_control; extern void __msr_check_and_clear(unsigned long bits); static inline void msr_check_and_clear(unsigned long bits) |