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percpu: free percpu allocation info for uniprocessor system

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Currently, only SMP system free the percpu allocation info.
Uniprocessor system should free it too. For example, one x86 UML
virtual machine with 256MB memory, UML kernel wastes one page memory.

Signed-off-by: Honggang Li <enjoymindful@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: stable@vger.kernel.org
This commit is contained in:
Honggang Li 2014-08-12 21:36:15 +08:00 • committed by Tejun Heo
commit 3189eddbca
1 changed files with 2 additions and 0 deletions
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2
mm/percpu.c
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@ -1932,6 +1932,8 @@ void __init setup_per_cpu_areas(void)
if (pcpu_setup_first_chunk(ai, fc) < 0) if (pcpu_setup_first_chunk(ai, fc) < 0)
panic("Failed to initialize percpu areas."); panic("Failed to initialize percpu areas.");
pcpu_free_alloc_info(ai);
} }
#endif /* CONFIG_SMP */ #endif /* CONFIG_SMP */