From: Hugh Dickins <hugh@veritas.com>
Date: Mon, 27 Aug 2007 15:06:19 +0000 (+0100)
Subject: fix bogus hotplug cpu warning
X-Git-Tag: v2.6.23-rc4~4
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d243769d3f83b318813a04a9592bb7cfedc6c280;p=linux-2.6

fix bogus hotplug cpu warning

Fix bogus DEBUG_PREEMPT warning on x86_64, when cpu brought online after
bootup: current_is_keventd is right to note its use of smp_processor_id
is preempt-safe, but should use raw_smp_processor_id to avoid the warning.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 58e5c152a6..e080d1d744 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -635,7 +635,7 @@ int keventd_up(void)
 int current_is_keventd(void)
 {
 	struct cpu_workqueue_struct *cwq;
-	int cpu = smp_processor_id();	/* preempt-safe: keventd is per-cpu */
+	int cpu = raw_smp_processor_id(); /* preempt-safe: keventd is per-cpu */
 	int ret = 0;
 
 	BUG_ON(!keventd_wq);