[3.16.y-ckt stable] Patch "Revert "percpu: free percpu allocation info for uniprocessor system"" has been added to staging queue

[Luis Henriques]

This is a note to let you know that I have just added a patch titled

    Revert "percpu: free percpu allocation info for uniprocessor system"

to the linux-3.16.y-queue branch of the 3.16.y-ckt extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.16.y-queue

This patch is scheduled to be released in version 3.16.7-ckt2.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.16.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

------

>From 8fb1d89ea5b754e073a022b4be7852eb49999ca2 Mon Sep 17 00:00:00 2001
From: Guenter Roeck <linux at roeck-us.net>
Date: Sun, 21 Sep 2014 15:04:53 -0700
Subject: Revert "percpu: free percpu allocation info for uniprocessor system"

commit bb2e226b3bef596dd56be97df655d857b4603923 upstream.

This reverts commit 3189eddbcafc ("percpu: free percpu allocation info for
uniprocessor system").

The commit causes a hang with a crisv32 image. This may be an architecture
problem, but at least for now the revert is necessary to be able to boot a
crisv32 image.

Cc: Tejun Heo <tj at kernel.org>
Cc: Honggang Li <enjoymindful at gmail.com>
Signed-off-by: Guenter Roeck <linux at roeck-us.net>
Signed-off-by: Tejun Heo <tj at kernel.org>
Fixes: 3189eddbcafc ("percpu: free percpu allocation info for uniprocessor system")
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
 mm/percpu.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/mm/percpu.c b/mm/percpu.c
index 492f601df473..2ddf9a990dbd 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -1933,8 +1933,6 @@ void __init setup_per_cpu_areas(void)

 	if (pcpu_setup_first_chunk(ai, fc) < 0)
 		panic("Failed to initialize percpu areas.");
-
-	pcpu_free_alloc_info(ai);
 }

 #endif	/* CONFIG_SMP */
--
2.1.0