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Date: Mon, 21 Oct 2013 16:58:13 +0800 From: Wei Yang <weiyang@...ux.vnet.ibm.com> To: tj@...nel.org, cl@...ux-foundation.org, linux-mm@...ck.org, linux-kernel@...r.kernel.org Cc: weiyang@...ux.vnet.ibm.com Subject: [PATCH 3/3] percpu: little optimization on calculating pcpu_unit_size pcpu_unit_size exactly equals to ai->unit_size. This patch assign this value instead of calculating from pcpu_unit_pages. Also it reorder them to make it looks more friendly to audience. Signed-off-by: Wei Yang <weiyang@...ux.vnet.ibm.com> --- mm/percpu.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/percpu.c b/mm/percpu.c index 4f710a4f..74677e0 100644 --- a/mm/percpu.c +++ b/mm/percpu.c @@ -1300,8 +1300,8 @@ int __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai, pcpu_unit_offsets = unit_off; /* determine basic parameters */ - pcpu_unit_pages = ai->unit_size >> PAGE_SHIFT; - pcpu_unit_size = pcpu_unit_pages << PAGE_SHIFT; + pcpu_unit_size = ai->unit_size; + pcpu_unit_pages = pcpu_unit_size >> PAGE_SHIFT; pcpu_atom_size = ai->atom_size; pcpu_chunk_struct_size = sizeof(struct pcpu_chunk) + BITS_TO_LONGS(pcpu_unit_pages) * sizeof(unsigned long); -- 1.7.5.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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