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| author |  Tejun Heo <tj@kernel.org>
| 2024-02-14 08:33:55 -1000 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org>
| 2024-02-14 08:33:55 -1000 |
| commit | 2f34d7337d98f3eae7bd3d1270efaf9d8a17cfc6 (patch) | |
| tree | ba618a794f4b55650672325b5c76d2d8e1cb0f05 /init | |
| parent | async: Use a dedicated unbound workqueue with raised min_active (diff) | |
| download | linux-2f34d7337d98f3eae7bd3d1270efaf9d8a17cfc6.tar.gz linux-2f34d7337d98f3eae7bd3d1270efaf9d8a17cfc6.tar.bz2 linux-2f34d7337d98f3eae7bd3d1270efaf9d8a17cfc6.zip | |
workqueue: Fix queue_work_on() with BH workqueues
When queue_work_on() is used to queue a BH work item on a remote CPU, the
work item is queued on that CPU but kick_pool() raises softirq on the local
CPU. This leads to stalls as the work item won't be executed until something
else on the remote CPU schedules a BH work item or tasklet locally.
Fix it by bouncing raising softirq to the target CPU using per-cpu irq_work.
Signed-off-by: Tejun Heo <tj@kernel.org>
Fixes: 4cb1ef64609f ("workqueue: Implement BH workqueues to eventually replace tasklets")
Diffstat (limited to 'init')
0 files changed, 0 insertions, 0 deletions