From ba895cc68b8cd42daa559576783af546fd79d59b 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: Ben Hutchings --- mm/percpu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/mm/percpu.c b/mm/percpu.c index 5c297506d8f4..e29a1c4f25a3 100644 --- a/mm/percpu.c +++ b/mm/percpu.c @@ -1895,6 +1895,8 @@ 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 */ -- 2.39.2