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| author | Dennis Zhou (Facebook) <dennisszhou@gmail.com> | 2017-07-24 19:02:13 -0400 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2017-07-26 17:41:05 -0400 |
| commit | 86b442fbce74d6cd0805410ef228776cbd0338d7 (patch) | |
| tree | 1d1fb3282d54d73cc47c0ba7f8a09a9050db23ae /mm/percpu-stats.c | |
| parent | ca460b3c96274d79f84b31a3fea23a6eed479917 (diff) | |
| download | lwn-86b442fbce74d6cd0805410ef228776cbd0338d7.tar.gz lwn-86b442fbce74d6cd0805410ef228776cbd0338d7.zip | |
percpu: add first_bit to keep track of the first free in the bitmap
This patch adds first_bit to keep track of the first free bit in the
bitmap. This hint helps prevent scanning of fully allocated blocks.
Signed-off-by: Dennis Zhou <dennisszhou@gmail.com>
Reviewed-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'mm/percpu-stats.c')
| -rw-r--r-- | mm/percpu-stats.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/percpu-stats.c b/mm/percpu-stats.c index ad03d73aa5fe..6142484e88f7 100644 --- a/mm/percpu-stats.c +++ b/mm/percpu-stats.c @@ -121,6 +121,7 @@ static void chunk_map_stats(struct seq_file *m, struct pcpu_chunk *chunk, P("nr_alloc", chunk->nr_alloc); P("max_alloc_size", chunk->max_alloc_size); P("empty_pop_pages", chunk->nr_empty_pop_pages); + P("first_bit", chunk->first_bit); P("free_bytes", chunk->free_bytes); P("contig_bytes", chunk->contig_bits * PCPU_MIN_ALLOC_SIZE); P("sum_frag", sum_frag); |