The patch titled
Subject: kmod: remove unecessary explicit wide CPU affinity setting
has been removed from the -mm tree. Its filename was
kmod-remove-unecessary-explicit-wide-cpu-affinity-setting.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Subject: 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: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Rik van Riel <riel@xxxxxxxxxx>
Reviewed-by: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Cc: Rusty Russell <rusty@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/kmod.c | 3 ---
1 file changed, 3 deletions(-)
diff -puN kernel/kmod.c~kmod-remove-unecessary-explicit-wide-cpu-affinity-setting kernel/kmod.c
--- a/kernel/kmod.c~kmod-remove-unecessary-explicit-wide-cpu-affinity-setting
+++ a/kernel/kmod.c
@@ -224,9 +224,6 @@ static int call_usermodehelper_exec_asyn
flush_signal_handlers(current, 1);
spin_unlock_irq(¤t->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.
* Avoid propagating that into the userspace child.
_
Patches currently in -mm which might be from fweisbec@xxxxxxxxx are
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