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| author | Mark Brown <broonie@kernel.org> | 2016-05-03 15:09:56 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2016-05-03 15:09:56 +0100 |
| commit | bc0868c62bb13834b20a864f684cced1f84a2412 (patch) | |
| tree | 2c382dcd24ac95f4dbf53d238d3161d6171d8a4b /include/linux/cache.h | |
| parent | fd786fb0276a22155058018f76eb4c665d37f170 (diff) | |
| parent | 8c12ad8e916ee0477f7a0a0f00b0a87b9a21ebf7 (diff) | |
Merge branch 'for-4.7/pwm-regulator' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm into regulator-pwm
Diffstat (limited to 'include/linux/cache.h')
| -rw-r--r-- | include/linux/cache.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/cache.h b/include/linux/cache.h index 17e7e82d2aa7..1be04f8c563a 100644 --- a/include/linux/cache.h +++ b/include/linux/cache.h @@ -12,10 +12,24 @@ #define SMP_CACHE_BYTES L1_CACHE_BYTES #endif +/* + * __read_mostly is used to keep rarely changing variables out of frequently + * updated cachelines. If an architecture doesn't support it, ignore the + * hint. + */ #ifndef __read_mostly #define __read_mostly #endif +/* + * __ro_after_init is used to mark things that are read-only after init (i.e. + * after mark_rodata_ro() has been called). These are effectively read-only, + * but may get written to during init, so can't live in .rodata (via "const"). + */ +#ifndef __ro_after_init +#define __ro_after_init __attribute__((__section__(".data..ro_after_init"))) +#endif + #ifndef ____cacheline_aligned #define ____cacheline_aligned __attribute__((__aligned__(SMP_CACHE_BYTES))) #endif |