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author | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-09-22 19:54:53 (GMT) |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-09-22 20:01:40 (GMT) |
commit | ae19ffbadc1b2100285a5b5b3d0a4e0a11390904 (patch) | |
tree | 3c2086ab67398a019089a47ca3f362a4bc6db74f /arch/powerpc/include/asm/cputhreads.h | |
parent | 34e84f39a27d059a3e6ec6e8b94aafa702e6f220 (diff) | |
parent | 9173a8ef24a6b1b8031507b35b8ffe5f85a87692 (diff) | |
download | linux-fsl-qoriq-ae19ffbadc1b2100285a5b5b3d0a4e0a11390904.tar.xz |
Merge branch 'master' into for-linus
Diffstat (limited to 'arch/powerpc/include/asm/cputhreads.h')
-rw-r--r-- | arch/powerpc/include/asm/cputhreads.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/cputhreads.h b/arch/powerpc/include/asm/cputhreads.h index fb11b0c..a8e1844 100644 --- a/arch/powerpc/include/asm/cputhreads.h +++ b/arch/powerpc/include/asm/cputhreads.h @@ -5,6 +5,15 @@ /* * Mapping of threads to cores + * + * Note: This implementation is limited to a power of 2 number of + * threads per core and the same number for each core in the system + * (though it would work if some processors had less threads as long + * as the CPU numbers are still allocated, just not brought offline). + * + * However, the API allows for a different implementation in the future + * if needed, as long as you only use the functions and not the variables + * directly. */ #ifdef CONFIG_SMP @@ -67,5 +76,12 @@ static inline int cpu_first_thread_in_core(int cpu) return cpu & ~(threads_per_core - 1); } +static inline int cpu_last_thread_in_core(int cpu) +{ + return cpu | (threads_per_core - 1); +} + + + #endif /* _ASM_POWERPC_CPUTHREADS_H */ |