From 23e5047a605d85e8df6bb840676a42391aa4a066 Mon Sep 17 00:00:00 2001 From: Honggang Li Date: Tue, 12 Aug 2014 21:36:15 +0800 Subject: [PATCH] percpu: free percpu allocation info for uniprocessor system 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 Signed-off-by: Tejun Heo Cc: stable@vger.kernel.org --- mm/percpu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/mm/percpu.c b/mm/percpu.c index 2139e30a4b449..da997f9800bde 100644 --- a/mm/percpu.c +++ b/mm/percpu.c @@ -1932,6 +1932,8 @@ 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 */ -- 2.39.5