[PATCH] swiotlb uninlinings

Optimise swiotlb.c for size.

   text    data     bss     dec     hex filename
   5009      89      64    5162    142a lib/swiotlb.o-before
   4666      89      64    4819    12d3 lib/swiotlb.o-after

For some reason my gcc (4.0.2) doesn't want to tailcall these things.

swiotlb_sync_sg_for_device:
	pushq	%rbp	#
	movl	$1, %r8d	#,
	movq	%rsp, %rbp	#,
	call	swiotlb_sync_sg	#
	leave
	ret
	.size	swiotlb_sync_sg_for_device, .-swiotlb_sync_sg_for_device
	.section	.text.swiotlb_sync_sg_for_cpu,"ax",@progbits
.globl swiotlb_sync_sg_for_cpu
	.type	swiotlb_sync_sg_for_cpu, @function
swiotlb_sync_sg_for_cpu:
	pushq	%rbp	#
	xorl	%r8d, %r8d	#
	movq	%rsp, %rbp	#,
	call	swiotlb_sync_sg	#
	leave
	ret

Cc: Jan Beulich <jbeulich@novell.com>
Cc: Andi Kleen <ak@suse.de>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 50a43801018259422345f815b39876b6a1a6a78f..623a68af8b18dec5a6346046503ac7dbd05c4096 100644 (file)
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -313,7 +313,7 @@ cleanup1:
 #endif
 
 #ifndef SWIOTLB_ARCH_HAS_NEEDS_MAPPING
-static inline int
+static int
 address_needs_mapping(struct device *hwdev, dma_addr_t addr)
 {
        dma_addr_t mask = 0xffffffff;
@@ -672,7 +672,7 @@ swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr, size_t size,
  * address back to the card, you must first perform a
  * swiotlb_dma_sync_for_device, and then the device again owns the buffer
  */
-static inline void
+static void
 swiotlb_sync_single(struct device *hwdev, dma_addr_t dev_addr,
                    size_t size, int dir, int target)
 {
@@ -702,7 +702,7 @@ swiotlb_sync_single_for_device(struct device *hwdev, dma_addr_t dev_addr,
 /*
  * Same as above, but for a sub-range of the mapping.
  */
-static inline void
+static void
 swiotlb_sync_single_range(struct device *hwdev, dma_addr_t dev_addr,
                          unsigned long offset, size_t size,
                          int dir, int target)
@@ -805,7 +805,7 @@ swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg, int nelems,
  * The same as swiotlb_sync_single_* but for a scatter-gather list, same rules
  * and usage.
  */
-static inline void
+static void
 swiotlb_sync_sg(struct device *hwdev, struct scatterlist *sg,
                int nelems, int dir, int target)
 {