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| author | Xin Hao <xhao@linux.alibaba.com> | 2022-01-14 14:09:40 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-01-15 16:30:32 +0200 |
| commit | d720bbbd70e968f8a0257393b575c3a29b56f990 (patch) | |
| tree | 5ea2427222abde3ba6b11243d4038ab138d7609e /mm/damon | |
| parent | c46b0bb6a735db0b6140e12e750b5acb1b032982 (diff) | |
| download | linux-d720bbbd70e968f8a0257393b575c3a29b56f990.tar.gz linux-d720bbbd70e968f8a0257393b575c3a29b56f990.tar.bz2 linux-d720bbbd70e968f8a0257393b575c3a29b56f990.zip | |
mm/damon/core: use abs() instead of diff_of()
In kernel, we can use abs(a - b) to get the absolute value, So there is no
need to redefine a new one.
Link: https://lkml.kernel.org/r/b24e7b82d9efa90daf150d62dea171e19390ad0b.1636989871.git.xhao@linux.alibaba.com
Signed-off-by: Xin Hao <xhao@linux.alibaba.com>
Reviewed-by: Muchun Song <songmuchun@bytedance.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 'mm/damon')
| -rw-r--r-- | mm/damon/core.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/mm/damon/core.c b/mm/damon/core.c index e92497895202..04b8df7fd9e9 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -750,8 +750,6 @@ static void damon_merge_two_regions(struct damon_target *t, damon_destroy_region(r, t); } -#define diff_of(a, b) (a > b ? a - b : b - a) - /* * Merge adjacent regions having similar access frequencies * @@ -765,13 +763,13 @@ static void damon_merge_regions_of(struct damon_target *t, unsigned int thres, struct damon_region *r, *prev = NULL, *next; damon_for_each_region_safe(r, next, t) { - if (diff_of(r->nr_accesses, r->last_nr_accesses) > thres) + if (abs(r->nr_accesses - r->last_nr_accesses) > thres) r->age = 0; else r->age++; if (prev && prev->ar.end == r->ar.start && - diff_of(prev->nr_accesses, r->nr_accesses) <= thres && + abs(prev->nr_accesses - r->nr_accesses) <= thres && sz_damon_region(prev) + sz_damon_region(r) <= sz_limit) damon_merge_two_regions(t, prev, r); else |