Commit d097c024 authored by Frederic Weisbecker's avatar Frederic Weisbecker Committed by Linus Torvalds

kmod: remove unecessary explicit wide CPU affinity setting

Khelper is affine to all CPUs.  Now since it creates the
call_usermodehelper_exec_[a]sync() kernel threads, those inherit the wide
affinity.

As such explicitly forcing a wide affinity from those kernel threads
is like a no-op.

Just remove it. It's needless and it breaks CPU isolation users who
rely on workqueue affinity tuning.
Signed-off-by: default avatarFrederic Weisbecker <fweisbec@gmail.com>
Cc: Rik van Riel <riel@redhat.com>
Reviewed-by: default avatarOleg Nesterov <oleg@redhat.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent b6b50a81
...@@ -224,9 +224,6 @@ static int call_usermodehelper_exec_async(void *data) ...@@ -224,9 +224,6 @@ static int call_usermodehelper_exec_async(void *data)
flush_signal_handlers(current, 1); flush_signal_handlers(current, 1);
spin_unlock_irq(&current->sighand->siglock); spin_unlock_irq(&current->sighand->siglock);
/* We can run anywhere, unlike our parent keventd(). */
set_cpus_allowed_ptr(current, cpu_all_mask);
/* /*
* Our parent is keventd, which runs with elevated scheduling priority. * Our parent is keventd, which runs with elevated scheduling priority.
* Avoid propagating that into the userspace child. * Avoid propagating that into the userspace child.
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment