openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

[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>
This commit is contained in:
Andrew Morton 2007-02-12 00:52:17 -08:00 committed by Linus Torvalds
parent 544fc7283c
commit be6b026785
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
lib/swiotlb.c
View File

@ -313,7 +313,7 @@ swiotlb_late_init_with_default_size(size_t default_size)
#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)
{