[PATCH v15 10/43] dept: distinguish each work from another
From: Byungchul Park <byungchul@sk.com>
Date: 2025-05-13 10:07:49
Also in:
dri-devel, linux-block, linux-ext4, linux-fsdevel, linux-ide, linux-mm, lkml
Subsystem:
the rest, workqueue · Maintainers:
Linus Torvalds, Tejun Heo
Workqueue already provides concurrency control. By that, any wait in a work doesn't prevents events in other works with the control enabled. Thus, each work would better be considered a different context. So let dept assign a different context id to each work. Signed-off-by: Byungchul Park <byungchul@sk.com> --- kernel/workqueue.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index cf6203282737..5a6ab354c416 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c@@ -55,6 +55,7 @@ #include <linux/kvm_para.h> #include <linux/delay.h> #include <linux/irq_work.h> +#include <linux/dept.h> #include "workqueue_internal.h"
@@ -3155,6 +3156,8 @@ __acquires(&pool->lock) lockdep_copy_map(&lockdep_map, &work->lockdep_map); #endif + dept_update_cxt(); + /* ensure we're on the correct CPU */ WARN_ON_ONCE(!(pool->flags & POOL_DISASSOCIATED) && raw_smp_processor_id() != pool->cpu);
--
2.17.1