linux-kernel - [RFC PATCHv3 03/11] percpu: use VMALLOC_TOTAL instead of VMALLOC_END

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Date:	Thu,  2 Jan 2014 13:53:21 -0800
From:	Laura Abbott <lauraa@...eaurora.org>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	Kyungmin Park <kmpark@...radead.org>,
	Dave Hansen <dave@...1.net>, linux-mm@...ck.org,
	Tejun Heo <tj@...nel.org>,
	Christoph Lameter <cl@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, Laura Abbott <lauraa@...eaurora.org>
Subject: [RFC PATCHv3 03/11] percpu: use VMALLOC_TOTAL instead of VMALLOC_END - VMALLOC_START

vmalloc already gives a useful macro to calculate the total vmalloc
size. Use it.

Signed-off-by: Laura Abbott <lauraa@...eaurora.org>
---
 mm/percpu.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/percpu.c b/mm/percpu.c
index 0d10def..afbf352 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -1686,10 +1686,10 @@ int __init pcpu_embed_first_chunk(size_t reserved_size, size_t dyn_size,
 	max_distance += ai->unit_size;
 
 	/* warn if maximum distance is further than 75% of vmalloc space */
-	if (max_distance > (VMALLOC_END - VMALLOC_START) * 3 / 4) {
+	if (max_distance > VMALLOC_TOTAL * 3 / 4) {
 		pr_warning("PERCPU: max_distance=0x%zx too large for vmalloc "
 			   "space 0x%lx\n", max_distance,
-			   (unsigned long)(VMALLOC_END - VMALLOC_START));
+			   VMALLOC_TOTAL);
 #ifdef CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK
 		/* and fail if we have fallback */
 		rc = -EINVAL;
-- 
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