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Subject[PATCH 3/24] consolidate spinlock.h
Date
The cli and sti instructions need to be replaced by paravirt hooks.
For the i386 architecture, this is already done. The code requirements
aren't much different from x86_64 POV, so this part is consolidated in
the common header

Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Jeremy Fitzhardinge <jeremy@xensource.com>
---
include/asm-x86/spinlock.h | 14 ++++++++++++++
include/asm-x86/spinlock_32.h | 9 ---------
include/asm-x86/spinlock_64.h | 8 +++++---
3 files changed, 19 insertions(+), 12 deletions(-)

diff --git a/include/asm-x86/spinlock.h b/include/asm-x86/spinlock.h
index d74d85e..e1d555a 100644
--- a/include/asm-x86/spinlock.h
+++ b/include/asm-x86/spinlock.h
@@ -1,5 +1,19 @@
+#ifndef _X86_SPINLOCK_H_
+#define _X86_SPINLOCK_H_
+
+#ifdef CONFIG_PARAVIRT
+#include <asm/paravirt.h>
+#else
+#define CLI_STRING "cli"
+#define STI_STRING "sti"
+#define CLI_STI_CLOBBERS
+#define CLI_STI_INPUT_ARGS
+#endif /* CONFIG_PARAVIRT */
+
#ifdef CONFIG_X86_32
# include "spinlock_32.h"
#else
# include "spinlock_64.h"
#endif
+
+#endif
diff --git a/include/asm-x86/spinlock_32.h b/include/asm-x86/spinlock_32.h
index d3bcebe..ebbf371 100644
--- a/include/asm-x86/spinlock_32.h
+++ b/include/asm-x86/spinlock_32.h
@@ -7,15 +7,6 @@
#include <asm/processor.h>
#include <linux/compiler.h>

-#ifdef CONFIG_PARAVIRT
-#include <asm/paravirt.h>
-#else
-#define CLI_STRING "cli"
-#define STI_STRING "sti"
-#define CLI_STI_CLOBBERS
-#define CLI_STI_INPUT_ARGS
-#endif /* CONFIG_PARAVIRT */
-
/*
* Your basic SMP spinlocks, allowing only a single CPU anywhere
*
diff --git a/include/asm-x86/spinlock_64.h b/include/asm-x86/spinlock_64.h
index 88bf981..e56b17e 100644
--- a/include/asm-x86/spinlock_64.h
+++ b/include/asm-x86/spinlock_64.h
@@ -48,12 +48,12 @@ static inline void __raw_spin_lock_flags(raw_spinlock_t *lock, unsigned long fla
"jns 5f\n"
"testl $0x200, %1\n\t" /* interrupts were disabled? */
"jz 4f\n\t"
- "sti\n"
+ STI_STRING "\n"
"3:\t"
"rep;nop\n\t"
"cmpl $0, %0\n\t"
"jle 3b\n\t"
- "cli\n\t"
+ CLI_STRING "\n\t"
"jmp 1b\n"
"4:\t"
"rep;nop\n\t"
@@ -61,7 +61,9 @@ static inline void __raw_spin_lock_flags(raw_spinlock_t *lock, unsigned long fla
"jg 1b\n\t"
"jmp 4b\n"
"5:\n\t"
- : "+m" (lock->slock) : "r" ((unsigned)flags) : "memory");
+ : "+m" (lock->slock)
+ : "r" ((unsigned)flags) CLI_STI_INPUT_ARGS
+ : "memory" CLI_STI_CLOBBERS);
}
#endif

--
1.4.4.2
-
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