linux-kernel - [PATCH 3.16.y-ckt 073/254] Revert "percpu: free percpu allocation info for uniprocessor system"

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Message-Id: <1416912004-5928-74-git-send-email-luis.henriques@canonical.com>
Date:	Tue, 25 Nov 2014 10:37:03 +0000
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Tejun Heo <tj@...nel.org>, Honggang Li <enjoymindful@...il.com>,
	Guenter Roeck <linux@...ck-us.net>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 3.16.y-ckt 073/254] Revert "percpu: free percpu allocation info for uniprocessor system"

3.16.7-ckt2 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Guenter Roeck <linux@...ck-us.net>

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@...nel.org>
Cc: Honggang Li <enjoymindful@...il.com>
Signed-off-by: Guenter Roeck <linux@...ck-us.net>
Signed-off-by: Tejun Heo <tj@...nel.org>
Fixes: 3189eddbcafc ("percpu: free percpu allocation info for uniprocessor system")
Signed-off-by: Luis Henriques <luis.henriques@...onical.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

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