Commit-ID: 5f1d919a8ca15f450c749227bc5e2e18f3cbfdb4 Gitweb: http://git.kernel.org/tip/5f1d919a8ca15f450c749227bc5e2e18f3cbfdb4 Author: Jan Beulich <JBeulich@xxxxxxxx> AuthorDate: Wed, 24 Sep 2014 08:40:14 +0100 Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx> CommitDate: Wed, 8 Oct 2014 10:05:49 +0200 x86: Improve cmpxchg8b_emu.S - don't include unneeded headers - drop redundant entry point label - complete unwind annotations - use .L prefix on local labels to not clutter the symbol table Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx> Link: http://lkml.kernel.org/r/5422917E0200007800038081@xxxxxxxxxxxxxxxxxxxx Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> --- arch/x86/lib/cmpxchg8b_emu.S | 20 +++++++++----------- 1 file changed, 9 insertions(+), 11 deletions(-) diff --git a/arch/x86/lib/cmpxchg8b_emu.S b/arch/x86/lib/cmpxchg8b_emu.S index 828cb71..b4807fce 100644 --- a/arch/x86/lib/cmpxchg8b_emu.S +++ b/arch/x86/lib/cmpxchg8b_emu.S @@ -7,11 +7,8 @@ */ #include <linux/linkage.h> -#include <asm/alternative-asm.h> -#include <asm/frame.h> #include <asm/dwarf2.h> - .text /* @@ -30,27 +27,28 @@ CFI_STARTPROC # set the whole ZF thing (caller will just compare # eax:edx with the expected value) # -cmpxchg8b_emu: - pushfl + pushfl_cfi cli cmpl (%esi), %eax - jne not_same + jne .Lnot_same cmpl 4(%esi), %edx - jne half_same + jne .Lhalf_same movl %ebx, (%esi) movl %ecx, 4(%esi) - popfl + CFI_REMEMBER_STATE + popfl_cfi ret - not_same: + CFI_RESTORE_STATE +.Lnot_same: movl (%esi), %eax - half_same: +.Lhalf_same: movl 4(%esi), %edx - popfl + popfl_cfi ret CFI_ENDPROC -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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