diff options
| author | Marco Crivellari <marco.crivellari@suse.com> | 2025-11-10 18:03:32 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@kernel.org> | 2026-03-26 17:31:35 +0100 |
| commit | 7eb28030f641d5bc7682c98602f896304efd31d2 (patch) | |
| tree | 17eeeae18d04f4366d463956aa97f6f374e644e4 /kernel | |
| parent | b0473dcd4b1d7e2e44947e7ac1820c73a268821a (diff) | |
smp: Use system_percpu_wq instead of system_wq
When a caller enqueues a work item using schedule_delayed_work() the used
wq is "system_wq" (per-cpu wq) while queue_delayed_work() uses
WORK_CPU_UNBOUND (used when no target CPU is specified). The same applies
to schedule_work() that is using system_wq and queue_work(), which again
makes use of WORK_CPU_UNBOUND.
This lack of consistency cannot be addressed without refactoring the API.
Continue the effort to refactor workqueue APIs, which began with the
introduction of new workqueues and a new alloc_workqueue() flag in:
commit 128ea9f6ccfb ("workqueue: Add system_percpu_wq and system_dfl_wq")
commit 930c2ea566af ("workqueue: Add new WQ_PERCPU flag")
and switch smp_call_on_cpu() to use system_percpu_wq because system_wq is
going away once the ongoing workqueue restructuring is done.
Suggested-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Marco Crivellari <marco.crivellari@suse.com>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
Link: https://patch.msgid.link/20251110170332.319314-1-marco.crivellari@suse.com
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/smp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/smp.c b/kernel/smp.c index 0fc4ff28ba79..6c77848d91f3 100644 --- a/kernel/smp.c +++ b/kernel/smp.c @@ -1185,7 +1185,7 @@ int smp_call_on_cpu(unsigned int cpu, int (*func)(void *), void *par, bool phys) if (cpu >= nr_cpu_ids || !cpu_online(cpu)) return -ENXIO; - queue_work_on(cpu, system_wq, &sscs.work); + queue_work_on(cpu, system_percpu_wq, &sscs.work); wait_for_completion(&sscs.done); destroy_work_on_stack(&sscs.work); |