diff options
| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-04-09 02:08:02 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-04-09 02:08:02 +0300 |
| commit | 4b42fafc1cdc4aba38d4f147cb2f3f1a32cd4a15 (patch) | |
| tree | 7f162d0612f7048dc52a3ba320a6685593100729 /include/linux/cache.h | |
| parent | b318556479cc923970a79d6c2311138581c0db83 (diff) | |
| parent | 6c9d9c81924b4b63c7a487e90fddb3b2d0f7d458 (diff) | |
| download | linux-4b42fafc1cdc4aba38d4f147cb2f3f1a32cd4a15.tar.xz | |
Merge branch 'pm-cpufreq-sched' into pm-cpufreq
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 |