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Message-Id: <5422917E0200007800038081@mail.emea.novell.com> Date: Wed, 24 Sep 2014 08:40:14 +0100 From: "Jan Beulich" <JBeulich@...e.com> To: <mingo@...e.hu>, <tglx@...utronix.de>, <hpa@...or.com> Cc: <linux-kernel@...r.kernel.org> Subject: [PATCH] ix86: 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@...e.com> --- arch/x86/lib/cmpxchg8b_emu.S | 20 +++++++++----------- 1 file changed, 9 insertions(+), 11 deletions(-) --- 3.17-rc6/arch/x86/lib/cmpxchg8b_emu.S +++ 3.17-rc6-ix86-improve-cmpxchg8b_emu/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-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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