linux-kernel - [PATCH 3.10 007/123] Revert "percpu: free percpu allocation info for uniprocessor system"

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Date:	Wed, 12 Nov 2014 10:16:13 +0900
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Tejun Heo <tj@...nel.org>,
	Honggang Li <enjoymindful@...il.com>,
	Guenter Roeck <linux@...ck-us.net>
Subject: [PATCH 3.10 007/123] Revert "percpu: free percpu allocation info for uniprocessor system"

3.10-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: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 mm/percpu.c |    2 --
 1 file changed, 2 deletions(-)

--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -1910,8 +1910,6 @@ 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 */


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