diff options
Diffstat (limited to 'debian/patches-rt/0006-workqueue-Manually-break-affinity-on-hotplug.patch')
| -rw-r--r-- | debian/patches-rt/0006-workqueue-Manually-break-affinity-on-hotplug.patch | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/debian/patches-rt/0006-workqueue-Manually-break-affinity-on-hotplug.patch b/debian/patches-rt/0006-workqueue-Manually-break-affinity-on-hotplug.patch new file mode 100644 index 000000000..7eb185ce2 --- /dev/null +++ b/debian/patches-rt/0006-workqueue-Manually-break-affinity-on-hotplug.patch @@ -0,0 +1,34 @@ +From e3372f0d43a35f1070d1689e6aa1f84d6cd9784b Mon Sep 17 00:00:00 2001 +From: Peter Zijlstra <peterz@infradead.org> +Date: Fri, 23 Oct 2020 12:12:03 +0200 +Subject: [PATCH 006/323] workqueue: Manually break affinity on hotplug +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.10/older/patches-5.10.204-rt100.tar.xz + +Don't rely on the scheduler to force break affinity for us -- it will +stop doing that for per-cpu-kthreads. + +Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> +Acked-by: Tejun Heo <tj@kernel.org> +Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> +--- + kernel/workqueue.c | 4 ++++ + 1 file changed, 4 insertions(+) + +diff --git a/kernel/workqueue.c b/kernel/workqueue.c +index 63140e4dd5df..7c14773dc4c4 100644 +--- a/kernel/workqueue.c ++++ b/kernel/workqueue.c +@@ -4941,6 +4941,10 @@ static void unbind_workers(int cpu) + pool->flags |= POOL_DISASSOCIATED; + + raw_spin_unlock_irq(&pool->lock); ++ ++ for_each_pool_worker(worker, pool) ++ WARN_ON_ONCE(set_cpus_allowed_ptr(worker->task, cpu_active_mask) < 0); ++ + mutex_unlock(&wq_pool_attach_mutex); + + /* +-- +2.43.0 + |