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| author | Petr Mladek <pmladek@suse.com> | 2022-12-08 11:46:56 +0100 |
|---|---|---|
| committer | Petr Mladek <pmladek@suse.com> | 2022-12-08 11:46:56 +0100 |
| commit | 6b2b0d839acaa84f05a77184370f793752e786e9 (patch) | |
| tree | d051c2ca80acc8a442277410d23a2053685f8a85 /include/linux/cache.h | |
| parent | 7365df19e8ff7a031e1557616fc0b3aa6d794d7e (diff) | |
| parent | 5074ffbec67ac592614901771d3a15e1198d759d (diff) | |
Merge branch 'rework/console-list-lock' into for-linus
Diffstat (limited to 'include/linux/cache.h')
| -rw-r--r-- | include/linux/cache.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/cache.h b/include/linux/cache.h index d742c57eaee5..5da1bbd96154 100644 --- a/include/linux/cache.h +++ b/include/linux/cache.h @@ -85,4 +85,17 @@ #define cache_line_size() L1_CACHE_BYTES #endif +/* + * Helper to add padding within a struct to ensure data fall into separate + * cachelines. + */ +#if defined(CONFIG_SMP) +struct cacheline_padding { + char x[0]; +} ____cacheline_internodealigned_in_smp; +#define CACHELINE_PADDING(name) struct cacheline_padding name +#else +#define CACHELINE_PADDING(name) +#endif + #endif /* __LINUX_CACHE_H */ |