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Groups > linux.kernel > #1417815
| From | "H. Peter Anvin" <hpa@linux.intel.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v2 08/10] x86, asm: Use CC_SET()/CC_OUT() in <asm/rwsem.h> |
| Date | 2016-06-08 21:50 +0200 |
| Message-ID | <rHREd-4nR-23@gated-at.bofh.it> (permalink) |
| References | <rHRux-4jK-11@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
From: "H. Peter Anvin" <hpa@zytor.com> Remove open-coded uses of set instructions to use CC_SET()/CC_OUT() in <asm/rwsem.h>. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Reviewed-by: Andy Lutomirski <luto@kernel.org> Reviewed-by: Borislav Petkov <bp@suse.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> --- arch/x86/include/asm/rwsem.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/include/asm/rwsem.h b/arch/x86/include/asm/rwsem.h index c508770..1e8be26 100644 --- a/arch/x86/include/asm/rwsem.h +++ b/arch/x86/include/asm/rwsem.h @@ -149,10 +149,10 @@ static inline bool __down_write_trylock(struct rw_semaphore *sem) LOCK_PREFIX " cmpxchg %2,%0\n\t" " jnz 1b\n\t" "2:\n\t" - " sete %3\n\t" + CC_SET(e) "# ending __down_write_trylock\n\t" : "+m" (sem->count), "=&a" (tmp0), "=&r" (tmp1), - "=qm" (result) + CC_OUT(e) (result) : "er" (RWSEM_ACTIVE_WRITE_BIAS) : "memory", "cc"); return result; -- 2.7.3.0.11.gd79db92
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[PATCH v2 00/10] x86: use gcc 6+ asm flag output feature "H. Peter Anvin" <hpa@linux.intel.com> - 2016-06-08 21:40 +0200
[PATCH v2 10/10] x86, asm: Use CC_SET()/CC_OUT() and static_cpu_has() in archrandom.h "H. Peter Anvin" <hpa@linux.intel.com> - 2016-06-08 21:40 +0200
[tip:x86/asm] x86, asm: Use CC_SET()/CC_OUT() and static_cpu_has() in archrandom.h "tip-bot for H. Peter Anvin" <tipbot@zytor.com> - 2016-06-08 22:00 +0200
Re: [PATCH v2 10/10] x86, asm: Use CC_SET()/CC_OUT() and static_cpu_has() in archrandom.h Borislav Petkov <bp@alien8.de> - 2016-06-09 17:50 +0200
[PATCH v2 04/10] x86, asm: define CC_SET() and CC_OUT() macros "H. Peter Anvin" <hpa@linux.intel.com> - 2016-06-08 21:40 +0200
[tip:x86/asm] x86, asm: define CC_SET() and CC_OUT() macros "tip-bot for H. Peter Anvin" <tipbot@zytor.com> - 2016-06-08 21:50 +0200
[PATCH v2 06/10] x86, asm: Use CC_SET()/CC_OUT() in <asm/bitops.h> "H. Peter Anvin" <hpa@linux.intel.com> - 2016-06-08 21:50 +0200
[PATCH v2 02/10] x86, asm: use bool for bitops and other assembly outputs "H. Peter Anvin" <hpa@linux.intel.com> - 2016-06-08 21:50 +0200
[PATCH v2 08/10] x86, asm: Use CC_SET()/CC_OUT() in <asm/rwsem.h> "H. Peter Anvin" <hpa@linux.intel.com> - 2016-06-08 21:50 +0200
[PATCH v2 07/10] x86, asm: Use CC_SET()/CC_OUT() in <asm/percpu.h> "H. Peter Anvin" <hpa@linux.intel.com> - 2016-06-08 21:50 +0200
[PATCH v2 05/10] x86, asm: change GEN_*_RMWcc() to use CC_SET()/CC_OUT() "H. Peter Anvin" <hpa@linux.intel.com> - 2016-06-08 21:50 +0200
[PATCH v2 03/10] x86, asm: change the GEN_*_RMWcc() macros to not quote the condition "H. Peter Anvin" <hpa@linux.intel.com> - 2016-06-08 21:50 +0200
Re: [PATCH v2 00/10] x86: use gcc 6+ asm flag output feature "H. Peter Anvin" <hpa@zytor.com> - 2016-06-08 23:40 +0200
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