diff options
| author | Xin Hao <xhao@linux.alibaba.com> | 2022-01-14 14:09:53 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-01-15 16:30:32 +0200 |
| commit | 9b2a38d6ef25c1748e3964b0ff30a89e4ed26583 (patch) | |
| tree | 2b57130d69ee33988be17c876f4a3ea2b6d292dc /include | |
| parent | c89ae63eb0662b6c9f82dbfad3ef010239b8c1b1 (diff) | |
mm/damon: move damon_rand() definition into damon.h
damon_rand() is called in three files:damon/core.c, damon/ paddr.c,
damon/vaddr.c, i think there is no need to redefine this twice, So move
it to damon.h will be a good choice.
Link: https://lkml.kernel.org/r/20211202075859.51341-1-xhao@linux.alibaba.com
Signed-off-by: Xin Hao <xhao@linux.alibaba.com>
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 | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/damon.h b/include/linux/damon.h index 1d1be348f506..3e91a597a1aa 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -11,12 +11,16 @@ #include <linux/mutex.h> #include <linux/time64.h> #include <linux/types.h> +#include <linux/random.h> /* Minimal region size. Every damon_region is aligned by this. */ #define DAMON_MIN_REGION PAGE_SIZE /* Max priority score for DAMON-based operation schemes */ #define DAMOS_MAX_SCORE (99) +/* Get a random number in [l, r) */ +#define damon_rand(l, r) (l + prandom_u32_max(r - l)) + /** * struct damon_addr_range - Represents an address region of [@start, @end). * @start: Start address of the region (inclusive). |