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| author | Lai Jiangshan <laijs@linux.alibaba.com> | 2021-12-07 15:35:42 +0800 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2021-12-09 12:26:54 -1000 |
| commit | 84f91c62d675480ffd3d870ee44c07965cbd8b21 (patch) | |
| tree | 585a176feee7061b5921ba5ee06f9e9a1de6542a /kernel/workqueue.c | |
| parent | 989442d73757868118a73b92732b549a73c9ce35 (diff) | |
| download | linux-84f91c62d675480ffd3d870ee44c07965cbd8b21.tar.gz | |
workqueue: Remove the cacheline_aligned for nr_running
nr_running is never modified remotely after the schedule callback in
wakeup path is removed.
Rather nr_running is often accessed with other fields in the pool
together, so the cacheline_aligned for nr_running isn't needed.
Signed-off-by: Lai Jiangshan <laijs@linux.alibaba.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'kernel/workqueue.c')
| -rw-r--r-- | kernel/workqueue.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/kernel/workqueue.c b/kernel/workqueue.c index 403387e9a9240..b583141c54819 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -154,6 +154,9 @@ struct worker_pool { unsigned long watchdog_ts; /* L: watchdog timestamp */ + /* The current concurrency level. */ + atomic_t nr_running; + struct list_head worklist; /* L: list of pending works */ int nr_workers; /* L: total number of workers */ @@ -178,18 +181,11 @@ struct worker_pool { int refcnt; /* PL: refcnt for unbound pools */ /* - * The current concurrency level. As it's likely to be accessed - * from other CPUs during try_to_wake_up(), put it in a separate - * cacheline. - */ - atomic_t nr_running ____cacheline_aligned_in_smp; - - /* * Destruction of pool is RCU protected to allow dereferences * from get_work_pool(). */ struct rcu_head rcu; -} ____cacheline_aligned_in_smp; +}; /* * The per-pool workqueue. While queued, the lower WORK_STRUCT_FLAG_BITS |