diff options
| author |   Xin Hao <xhao@linux.alibaba.com> | 2022-01-14 14:09:56 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2022-01-15 16:30:32 +0200 |
| commit | 234d68732b6c135087bdebfa0630a43ae8c27758 (patch) | |
| tree | 7e174e17c43fb2e7d2cdd9ca0bd064aa746b6ed1 /include | |
| parent | mm/damon: move damon_rand() definition into damon.h (diff) | |
| download | linux-dev-234d68732b6c135087bdebfa0630a43ae8c27758.tar.xz linux-dev-234d68732b6c135087bdebfa0630a43ae8c27758.zip | |
mm/damon: modify damon_rand() macro to static inline function
damon_rand() cannot be implemented as a macro.
Example:
damon_rand(a++, b);
The value of 'a' will be incremented twice, This is obviously
unreasonable, So there fix it.
Link: https://lkml.kernel.org/r/110ffcd4e420c86c42b41ce2bc9f0fe6a4f32cd3.1638795127.git.xhao@linux.alibaba.com
Fixes: b9a6ac4e4ede ("mm/damon: adaptively adjust regions")
Signed-off-by: Xin Hao <xhao@linux.alibaba.com>
Reported-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/damon.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/damon.h b/include/linux/damon.h index 3e91a597a1aa..e2c8152985b7 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -19,7 +19,10 @@ #define DAMOS_MAX_SCORE (99) /* Get a random number in [l, r) */ -#define damon_rand(l, r) (l + prandom_u32_max(r - l)) +static inline unsigned long damon_rand(unsigned long l, unsigned long r) +{ + return l + prandom_u32_max(r - l); +} /** * struct damon_addr_range - Represents an address region of [@start, @end). |