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| author | Mike Snitzer <snitzer@kernel.org> | 2022-03-26 21:14:00 +0300 |
|---|---|---|
| committer | Mike Snitzer <snitzer@kernel.org> | 2022-05-06 00:31:34 +0300 |
| commit | 442761fd2b297d65d1cb5786249e1e07a19e9122 (patch) | |
| tree | 5f2b1b8f1c25cd74c1e2c0af3ce2e6fed3941c5b /drivers/md/dm-stats.c | |
| parent | 563a225c9fd207326c2a2af9d59b4097cb31ce70 (diff) | |
| download | linux-442761fd2b297d65d1cb5786249e1e07a19e9122.tar.xz | |
dm: conditionally enable branching for less used features
Use jump_labels to further reduce cost of unlikely branches for zoned
block devices, dm-stats and swap_bios throttling.
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Diffstat (limited to 'drivers/md/dm-stats.c')
| -rw-r--r-- | drivers/md/dm-stats.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/md/dm-stats.c b/drivers/md/dm-stats.c index 0e039a8c0bf2..86e0697330e8 100644 --- a/drivers/md/dm-stats.c +++ b/drivers/md/dm-stats.c @@ -396,6 +396,9 @@ static int dm_stats_create(struct dm_stats *stats, sector_t start, sector_t end, dm_stats_recalc_precise_timestamps(stats); + if (!static_key_enabled(&stats_enabled.key)) + static_branch_enable(&stats_enabled); + mutex_unlock(&stats->mutex); resume_callback(md); |