diff options
| author | James Morris <james.l.morris@oracle.com> | 2017-11-29 12:47:41 +1100 |
|---|---|---|
| committer | James Morris <james.l.morris@oracle.com> | 2017-11-29 12:47:41 +1100 |
| commit | cf40a76e7d5874bb25f4404eecc58a2e033af885 (patch) | |
| tree | 8fd81cbea03c87b3d41d7ae5b1d11eadd35d6ef5 /include/linux/average.h | |
| parent | ab5348c9c23cd253f5902980d2d8fe067dc24c82 (diff) | |
| parent | 4fbd8d194f06c8a3fd2af1ce560ddb31f7ec8323 (diff) | |
Merge tag 'v4.15-rc1' into next-seccomp
Linux 4.15-rc1
Diffstat (limited to 'include/linux/average.h')
| -rw-r--r-- | include/linux/average.h | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/include/linux/average.h b/include/linux/average.h index 7ddaf340d2ac..a1a8f09631ce 100644 --- a/include/linux/average.h +++ b/include/linux/average.h @@ -1,6 +1,11 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #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) * @@ -48,7 +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; \ \ @@ -57,10 +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 */ |