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| author | Andi Kleen <ak@suse.de> | 2007-05-02 19:27:06 +0200 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2007-05-02 19:27:06 +0200 |
| commit | c8fdd247255a3a027cd9f66dcf93e6847d1d2f85 (patch) | |
| tree | 4a67cacf41e34558674c72038dd57f3c2cad012b | |
| parent | [PATCH] i386: Support Oprofile for AMD Family 10 CPUs (diff) | |
| download | linux-c8fdd247255a3a027cd9f66dcf93e6847d1d2f85.tar.xz linux-c8fdd247255a3a027cd9f66dcf93e6847d1d2f85.zip | |
[PATCH] x86: Drop cc-options call for all options supported in gcc 3.2+
The kernel only supports gcc 3.2+ now so it doesn't make sense
anymore to explicitely check for options this compiler version
already has.
This actually fixes a bug. The -mprefered-stack-boundary check
never worked because gcc rightly complains
CC arch/i386/kernel/asm-offsets.s
cc1: -mpreferred-stack-boundary=2 is not between 4 and 12
We just never saw the error because of cc-options.
I changed it to 4 to actually work.
Tested by compiling i386 and x86-64 defconfig with gcc 3.2.
Should speed up the build time a tiny bit and improve
stack usage on i386 slightly.
Signed-off-by: Andi Kleen <ak@suse.de>
| -rw-r--r-- | Makefile | 2 | ||||
| -rw-r--r-- | arch/i386/Makefile | 2 |
2 files changed, 2 insertions, 2 deletions
@@ -491,7 +491,7 @@ endif include $(srctree)/arch/$(ARCH)/Makefile ifdef CONFIG_FRAME_POINTER -CFLAGS += -fno-omit-frame-pointer $(call cc-option,-fno-optimize-sibling-calls,) +CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls else CFLAGS += -fomit-frame-pointer endif diff --git a/arch/i386/Makefile b/arch/i386/Makefile index bd28f9f9b4b7..6dc5e5d90fec 100644 --- a/arch/i386/Makefile +++ b/arch/i386/Makefile @@ -34,7 +34,7 @@ CHECKFLAGS += -D__i386__ CFLAGS += -pipe -msoft-float -mregparm=3 -freg-struct-return # prevent gcc from keeping the stack 16 byte aligned -CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2) +CFLAGS += -mpreferred-stack-boundary=4 # CPU-specific tuning. Anything which can be shared with UML should go here. include $(srctree)/arch/i386/Makefile.cpu |