From: Siddha, Suresh B <suresh.b.siddha@intel.com>
Date: Thu, 7 Dec 2006 04:34:31 +0000 (-0800)
Subject: [PATCH] suspend: don't change cpus_allowed for task initiating the suspend
X-Git-Tag: firefly_0821_release~31885^2~14^2~283
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=112cecb2cc0e7341db92281ba04b26c41bb8146d;p=firefly-linux-kernel-4.4.55.git

[PATCH] suspend: don't change cpus_allowed for task initiating the suspend

Don't modify the cpus_allowed of the task initiating the suspend.
_cpu_down() already makes sure that the task doing the suspend doesn't run
on dying cpu.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Nigel Cunningham <nigel@suspend2.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/kernel/cpu.c b/kernel/cpu.c
index 272254f20d97..9124669f4586 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -270,11 +270,7 @@ int disable_nonboot_cpus(void)
 			goto out;
 		}
 	}
-	error = set_cpus_allowed(current, cpumask_of_cpu(first_cpu));
-	if (error) {
-		printk(KERN_ERR "Could not run on CPU%d\n", first_cpu);
-		goto out;
-	}
+
 	/* We take down all of the non-boot CPUs in one shot to avoid races
 	 * with the userspace trying to use the CPU hotplug at the same time
 	 */