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| author | Roman Gushchin <guro@fb.com> | 2021-04-07 20:57:31 -0700 |
|---|---|---|
| committer | Dennis Zhou <dennis@kernel.org> | 2021-04-16 20:57:49 +0000 |
| commit | ac9380f6b8a6a908a9df023bf8a2bcdaf9d2d6cb (patch) | |
| tree | 58e23211f36e988ac5662a949c4ed4db5fd00163 | |
| parent | d434405aaab7d0ebc516b68a8fc4100922d7f5ef (diff) | |
percpu: fix a comment about the chunks ordering
Since the commit 3e54097beb22 ("percpu: manage chunks based on
contig_bits instead of free_bytes") chunks are sorted based on the
size of the biggest continuous free area instead of the total number
of free bytes. Update the corresponding comment to reflect this.
Signed-off-by: Roman Gushchin <guro@fb.com>
Signed-off-by: Dennis Zhou <dennis@kernel.org>
| -rw-r--r-- | mm/percpu.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/mm/percpu.c b/mm/percpu.c index 23308113a5ff..2c459a0ee5e6 100644 --- a/mm/percpu.c +++ b/mm/percpu.c @@ -99,7 +99,10 @@ #include "percpu-internal.h" -/* the slots are sorted by free bytes left, 1-31 bytes share the same slot */ +/* + * The slots are sorted by the size of the biggest continuous free area. + * 1-31 bytes share the same slot. + */ #define PCPU_SLOT_BASE_SHIFT 5 /* chunks in slots below this are subject to being sidelined on failed alloc */ #define PCPU_SLOT_FAIL_THRESHOLD 3 |