From c16060dfda1c8418a9e638b79f5d2101b482e89f 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 commit 3189eddbcafcc4d827f7f19facbeddec4424eba8 upstream. 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 Signed-off-by: Zefan Li --- mm/percpu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/mm/percpu.c b/mm/percpu.c index 13b2eefabfdd3..5f6042b61ca8b 100644 --- a/mm/percpu.c +++ b/mm/percpu.c @@ -1907,6 +1907,8 @@ 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 */ -- 2.47.2