From: tip-bot for Fenghua Yu <fenghua.yu@intel.com>
To: linux-tip-commits@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@redhat.com,
fenghua.yu@intel.com, tglx@linutronix.de, hpa@linux.intel.com
Subject: [tip:perf/core] x86, alternative: Add altinstruction_entry macro
Date: Wed, 18 May 2011 20:41:24 GMT [thread overview]
Message-ID: <tip-9072d11da15a71e086eab3b5085184f2c1d06913@git.kernel.org> (raw)
In-Reply-To: <1305671358-14478-5-git-send-email-fenghua.yu@intel.com>
Commit-ID: 9072d11da15a71e086eab3b5085184f2c1d06913
Gitweb: http://git.kernel.org/tip/9072d11da15a71e086eab3b5085184f2c1d06913
Author: Fenghua Yu <fenghua.yu@intel.com>
AuthorDate: Tue, 17 May 2011 15:29:13 -0700
Committer: H. Peter Anvin <hpa@linux.intel.com>
CommitDate: Tue, 17 May 2011 15:40:25 -0700
x86, alternative: Add altinstruction_entry macro
Add altinstruction_entry macro to generate .altinstructions section
entries from assembly code. This should be less failure-prone than
open-coding.
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Link: http://lkml.kernel.org/r/1305671358-14478-5-git-send-email-fenghua.yu@intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
---
arch/x86/include/asm/alternative-asm.h | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/arch/x86/include/asm/alternative-asm.h b/arch/x86/include/asm/alternative-asm.h
index a63a68b..94d420b 100644
--- a/arch/x86/include/asm/alternative-asm.h
+++ b/arch/x86/include/asm/alternative-asm.h
@@ -15,4 +15,13 @@
.endm
#endif
+.macro altinstruction_entry orig alt feature orig_len alt_len
+ .align 8
+ .quad \orig
+ .quad \alt
+ .word \feature
+ .byte \orig_len
+ .byte \alt_len
+.endm
+
#endif /* __ASSEMBLY__ */
next prev parent reply other threads:[~2011-05-18 20:41 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-17 22:29 [PATCH 0/9] Optimize string operations by enhanced REP MOVSB/STOSB Fenghua Yu
2011-05-17 22:29 ` [PATCH 1/9] x86, cpu: Enable enhanced REP MOVSB/STOSB feature Fenghua Yu
2011-05-17 23:13 ` [tip:x86/cpufeature] x86, cpufeature: Add CPU feature bit for enhanced REP MOVSB/STOSB tip-bot for Fenghua Yu
2011-05-17 22:29 ` [PATCH 2/9] x86/kernel/cpu/intel.c: Initialize Enhanced REP MOVSB/STOSBenhanced Fenghua Yu
2011-05-18 2:46 ` Andi Kleen
2011-05-18 3:47 ` H. Peter Anvin
2011-05-18 20:40 ` [tip:perf/core] x86, mem, intel: Initialize Enhanced REP MOVSB/STOSB tip-bot for Fenghua Yu
2011-05-17 22:29 ` [PATCH 3/9] x86/kernel/alternative.c: Add comment for applying alternatives order Fenghua Yu
2011-05-18 20:40 ` [tip:perf/core] x86, alternative, doc: " tip-bot for Fenghua Yu
2011-05-17 22:29 ` [PATCH 4/9] x86, alternative-asm.h: Add altinstruction_entry macro Fenghua Yu
2011-05-18 20:41 ` tip-bot for Fenghua Yu [this message]
2011-05-17 22:29 ` [PATCH 5/9] x86/lib/clear_page_64.S: Support clear_page() with enhanced REP MOVSB/STOSB Fenghua Yu
2011-05-18 20:41 ` [tip:perf/core] x86, mem: clear_page_64.S: " tip-bot for Fenghua Yu
2011-05-17 22:29 ` [PATCH 6/9] x86/lib/copy_user_64.S: Support copy_to_user/copy_from_user by " Fenghua Yu
2011-05-18 20:42 ` [tip:perf/core] x86, mem: copy_user_64.S: Support copy_to/from_user " tip-bot for Fenghua Yu
2011-05-17 22:29 ` [PATCH 7/9] x86/lib/memcpy_64.S: Optimize memcpy " Fenghua Yu
2011-05-18 6:35 ` Ingo Molnar
2011-05-18 19:04 ` Yu, Fenghua
2011-05-18 20:42 ` [tip:perf/core] x86, mem: memcpy_64.S: " tip-bot for Fenghua Yu
2011-05-17 22:29 ` [PATCH 8/9] x86/lib/memmove_64.S: Optimize memmove " Fenghua Yu
2011-05-18 20:43 ` [tip:perf/core] x86, mem: memmove_64.S: " tip-bot for Fenghua Yu
2011-05-17 22:29 ` [PATCH 9/9] x86/lib/memset_64.S: Optimize memset " Fenghua Yu
2011-05-18 2:57 ` Andi Kleen
2011-05-18 3:09 ` Yu, Fenghua
2011-05-18 4:05 ` Andi Kleen
2011-05-18 18:33 ` Yu, Fenghua
2011-05-18 18:39 ` Andi Kleen
2011-05-18 18:47 ` Ingo Molnar
2011-05-18 18:49 ` Yu, Fenghua
2011-05-18 20:43 ` [tip:perf/core] x86, mem: memset_64.S: " tip-bot for Fenghua Yu
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