diff options
| author | Joakim Tjernlund <Joakim.Tjernlund@transmode.se> | 2010-01-08 14:42:40 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-01-11 09:34:04 -0800 |
| commit | ac4c2a3bbe5db5fc570b1d0ee1e474db7cb22585 (patch) | |
| tree | a7b8f2d618497cd4152ebe8e7390107a442bf0f6 /arch | |
| parent | 129182e5626972ac0df85d43a36dd46ad61c64e1 (diff) | |
| download | blackbird-op-linux-ac4c2a3bbe5db5fc570b1d0ee1e474db7cb22585.tar.gz blackbird-op-linux-ac4c2a3bbe5db5fc570b1d0ee1e474db7cb22585.zip | |
zlib: optimize inffast when copying direct from output
JFFS2 uses lesser compression ratio and inflate always ends up in "copy
direct from output" case.
This patch tries to optimize the direct copy procedure. Uses
get_unaligned() but only in one place.
The copy loop just above this one can also use this optimization, but I
havn't done so as I have not tested if it is a win there too.
On my MPC8321 this is about 17% faster on my JFFS2 root FS than the
original.
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Cc: Roel Kluin <roel.kluin@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/boot/Makefile | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile index bb2465bcb327..826a30a00f59 100644 --- a/arch/powerpc/boot/Makefile +++ b/arch/powerpc/boot/Makefile @@ -20,7 +20,7 @@ all: $(obj)/zImage BOOTCFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ - -fno-strict-aliasing -Os -msoft-float -pipe \ + -fno-strict-aliasing -Os -msoft-float -pipe -D__KERNEL__\ -fomit-frame-pointer -fno-builtin -fPIC -nostdinc \ -isystem $(shell $(CROSS32CC) -print-file-name=include) BOOTAFLAGS := -D__ASSEMBLY__ $(BOOTCFLAGS) -traditional -nostdinc @@ -34,6 +34,8 @@ BOOTCFLAGS += -fno-stack-protector endif BOOTCFLAGS += -I$(obj) -I$(srctree)/$(obj) +BOOTCFLAGS += -include include/linux/autoconf.h -Iarch/powerpc/include +BOOTCFLAGS += -Iinclude DTS_FLAGS ?= -p 1024 |
