[PATCH] block/xen-blkback: Deinline shrink_free_pagepool, save 204 bytes

From: Denys Vlasenko
Date: Sun Mar 13 2016 - 15:28:10 EST


This function compiles to 201 bytes of machine code. 2 callsites.

This function has a spinlocked code section,
which is significantly more expensive than call/return overhead.

Signed-off-by: Denys Vlasenko <dvlasenk@xxxxxxxxxx>
CC: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
CC: Roger Pau Monnà <roger.pau@xxxxxxxxxx>
CC: xen-devel@xxxxxxxxxxxxxxxxxxxx
CC: linux-kernel@xxxxxxxxxxxxxxx
---
drivers/block/xen-blkback/blkback.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/block/xen-blkback/blkback.c b/drivers/block/xen-blkback/blkback.c
index 4809c15..5e3394c 100644
--- a/drivers/block/xen-blkback/blkback.c
+++ b/drivers/block/xen-blkback/blkback.c
@@ -155,7 +155,7 @@ static inline void put_free_pages(struct xen_blkif_ring *ring, struct page **pag
spin_unlock_irqrestore(&ring->free_pages_lock, flags);
}

-static inline void shrink_free_pagepool(struct xen_blkif_ring *ring, int num)
+static void shrink_free_pagepool(struct xen_blkif_ring *ring, int num)
{
/* Remove requested pages in batches of NUM_BATCH_FREE_PAGES */
struct page *page[NUM_BATCH_FREE_PAGES];
--
2.5.0