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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2018-02-01 00:41:33 -0800 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2018-02-01 00:41:33 -0800 |
| commit | 10a558374f3751cf4eb55143008975641dfc2cf4 (patch) | |
| tree | aab0def9d2289f6520ffb62ec4c1d738135447c4 /include/linux/average.h | |
| parent | fafef982c7353e8982b951e40573e990ccf0ed00 (diff) | |
| parent | d8a5b80568a9cb66810e75b182018e9edb68e8ff (diff) | |
Merge tag 'v4.15' into next
Sync with mainline to get in trackpoint updates and other changes.
Diffstat (limited to 'include/linux/average.h')
| -rw-r--r-- | include/linux/average.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/include/linux/average.h b/include/linux/average.h index 1b6f5560c264..a1a8f09631ce 100644 --- a/include/linux/average.h +++ b/include/linux/average.h @@ -2,6 +2,10 @@ #ifndef _LINUX_AVERAGE_H #define _LINUX_AVERAGE_H +#include <linux/bug.h> +#include <linux/compiler.h> +#include <linux/log2.h> + /* * Exponentially weighted moving average (EWMA) * @@ -49,7 +53,7 @@ static inline void ewma_##name##_add(struct ewma_##name *e, \ unsigned long val) \ { \ - unsigned long internal = ACCESS_ONCE(e->internal); \ + unsigned long internal = READ_ONCE(e->internal); \ unsigned long weight_rcp = ilog2(_weight_rcp); \ unsigned long precision = _precision; \ \ @@ -58,10 +62,10 @@ BUILD_BUG_ON((_precision) > 30); \ BUILD_BUG_ON_NOT_POWER_OF_2(_weight_rcp); \ \ - ACCESS_ONCE(e->internal) = internal ? \ + WRITE_ONCE(e->internal, internal ? \ (((internal << weight_rcp) - internal) + \ (val << precision)) >> weight_rcp : \ - (val << precision); \ + (val << precision)); \ } #endif /* _LINUX_AVERAGE_H */ |