diff options
| author | Jens Axboe <axboe@kernel.dk> | 2024-01-16 09:18:39 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2024-02-05 10:07:34 -0700 |
| commit | 06b23f92af87a84d70881b2ecaa72e00f7838264 (patch) | |
| tree | bf23c4626e3b3c5ab01d0661e0d1b6644d10c8bf /include/linux/sched.h | |
| parent | da4c8c3d0975f031ef82d39927102e39fa6ddfac (diff) | |
| download | linux-06b23f92af87a84d70881b2ecaa72e00f7838264.tar.gz | |
block: update cached timestamp post schedule/preemption
Mark the task as having a cached timestamp when set assign it, so we
can efficiently check if it needs updating post being scheduled back in.
This covers both the actual schedule out case, which would've flushed
the plug, and the preemption case which doesn't touch the plugged
requests (for many reasons, one of them being then we'd need to have
preemption disabled around plug state manipulation).
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/sched.h')
| -rw-r--r-- | include/linux/sched.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index ffe8f618ab869..15b7cb478d166 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1642,7 +1642,7 @@ extern struct pid *cad_pid; #define PF_NO_SETAFFINITY 0x04000000 /* Userland is not allowed to meddle with cpus_mask */ #define PF_MCE_EARLY 0x08000000 /* Early kill for mce process policy */ #define PF_MEMALLOC_PIN 0x10000000 /* Allocation context constrained to zones which allow long term pinning. */ -#define PF__HOLE__20000000 0x20000000 +#define PF_BLOCK_TS 0x20000000 /* plug has ts that needs updating */ #define PF__HOLE__40000000 0x40000000 #define PF_SUSPEND_TASK 0x80000000 /* This thread called freeze_processes() and should not be frozen */ |