From: Mel Gorman <mel@csn.ul.ie>
Date: Tue, 16 Jun 2009 22:32:05 +0000 (-0700)
Subject: page allocator: inline buffered_rmqueue()
X-Git-Tag: firefly_0821_release~13889^2~144
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=0a15c3e9f649f71464ac39e6378f1fde6f995322;p=firefly-linux-kernel-4.4.55.git

page allocator: inline buffered_rmqueue()

buffered_rmqueue() is in the fast path so inline it.  Because it only has
one call site, this function can then be inlined without causing text
bloat.  On an x86-based config, it made no difference as the savings were
padded out by NOP instructions.  Milage varies but text will either
decrease in size or remain static.

Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Dave Hansen <dave@linux.vnet.ibm.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 04713f649fd4..c101921e6a64 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1072,7 +1072,8 @@ void split_page(struct page *page, unsigned int order)
  * we cheat by calling it from here, in the order > 0 path.  Saves a branch
  * or two.
  */
-static struct page *buffered_rmqueue(struct zone *preferred_zone,
+static inline
+struct page *buffered_rmqueue(struct zone *preferred_zone,
 			struct zone *zone, int order, gfp_t gfp_flags,
 			int migratetype)
 {