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Date: Mon, 1 Mar 2010 19:59:08 GMT From: tip-bot for Luca Barbieri <luca@...a-barbieri.com> To: linux-tip-commits@...r.kernel.org Cc: linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com, luca@...a-barbieri.com, tglx@...utronix.de Subject: [tip:x86/atomic] x86-32: Fix atomic64_inc_not_zero return value convention Commit-ID: f3e83131469e29032a700217aa394996107b8fc5 Gitweb: http://git.kernel.org/tip/f3e83131469e29032a700217aa394996107b8fc5 Author: Luca Barbieri <luca@...a-barbieri.com> AuthorDate: Mon, 1 Mar 2010 19:55:49 +0100 Committer: H. Peter Anvin <hpa@...or.com> CommitDate: Mon, 1 Mar 2010 11:39:03 -0800 x86-32: Fix atomic64_inc_not_zero return value convention atomic64_inc_not_zero must return 1 if it perfomed the add and 0 otherwise. It was doing the opposite thing. Signed-off-by: Luca Barbieri <luca@...a-barbieri.com> LKML-Reference: <1267469749-11878-6-git-send-email-luca@...a-barbieri.com> Signed-off-by: H. Peter Anvin <hpa@...or.com> --- arch/x86/lib/atomic64_386_32.S | 3 +-- arch/x86/lib/atomic64_cx8_32.S | 3 +-- 2 files changed, 2 insertions(+), 4 deletions(-) diff --git a/arch/x86/lib/atomic64_386_32.S b/arch/x86/lib/atomic64_386_32.S index a2f847c..4a5979a 100644 --- a/arch/x86/lib/atomic64_386_32.S +++ b/arch/x86/lib/atomic64_386_32.S @@ -153,13 +153,12 @@ BEGIN inc_not_zero %esi adcl $0, %edx movl %eax, ($v) movl %edx, 4($v) - xorl %eax, %eax + movl $1, %eax 2: RETURN 3: testl %edx, %edx jne 1b - movl $1, %eax jmp 2b END_ diff --git a/arch/x86/lib/atomic64_cx8_32.S b/arch/x86/lib/atomic64_cx8_32.S index d0e37b1..71e080d 100644 --- a/arch/x86/lib/atomic64_cx8_32.S +++ b/arch/x86/lib/atomic64_cx8_32.S @@ -212,14 +212,13 @@ ENTRY(atomic64_inc_not_zero_cx8) cmpxchg8b (%esi) jne 1b - xorl %eax, %eax + movl $1, %eax 3: RESTORE ebx ret 4: testl %edx, %edx jne 2b - movl $1, %eax jmp 3b CFI_ENDPROC ENDPROC(atomic64_inc_not_zero_cx8) -- 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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