[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Wed, 8 Aug 2007 01:18:50 -0300
From: Glauber de Oliveira Costa <gcosta@...hat.com>
To: linux-kernel@...r.kernel.org
Cc: akpm@...ux-foundation.org, rusty@...tcorp.com.au, ak@...e.de,
mingo@...e.hu, chrisw@...s-sol.org, jeremy@...p.org,
avi@...ranet.com, anthony@...emonkey.ws,
virtualization@...ts.linux-foundation.org, lguest@...abs.org,
Glauber de Oliveira Costa <gcosta@...hat.com>,
Steven Rostedt <rostedt@...dmis.org>
Subject: [PATCH 3/25] [PATCH] irq_flags / halt routines
This patch turns the irq_flags and halt routines into the
native versions.
Signed-off-by: Glauber de Oliveira Costa <gcosta@...hat.com>
Signed-off-by: Steven Rostedt <rostedt@...dmis.org>
---
include/asm-x86_64/irqflags.h | 32 +++++++++++++++++++++++++++-----
1 files changed, 27 insertions(+), 5 deletions(-)
diff --git a/include/asm-x86_64/irqflags.h b/include/asm-x86_64/irqflags.h
index 86e70fe..4ba5241 100644
--- a/include/asm-x86_64/irqflags.h
+++ b/include/asm-x86_64/irqflags.h
@@ -16,6 +16,22 @@
* Interrupt control:
*/
+#ifdef CONFIG_PARAVIRT
+#include <asm/paravirt.h>
+# ifdef CONFIG_X86_VSMP
+static inline int raw_irqs_disabled_flags(unsigned long flags)
+{
+ return !(flags & X86_EFLAGS_IF) || (flags & X86_EFLAGS_AC);
+}
+# else
+static inline int raw_irqs_disabled_flags(unsigned long flags)
+{
+ return !(flags & X86_EFLAGS_IF);
+}
+# endif
+
+#else /* PARAVIRT */
+
static inline unsigned long __raw_local_save_flags(void)
{
unsigned long flags;
@@ -31,9 +47,6 @@ static inline unsigned long __raw_local_save_flags(void)
return flags;
}
-#define raw_local_save_flags(flags) \
- do { (flags) = __raw_local_save_flags(); } while (0)
-
static inline void raw_local_irq_restore(unsigned long flags)
{
__asm__ __volatile__(
@@ -88,6 +101,10 @@ static inline int raw_irqs_disabled_flags(unsigned long flags)
#endif
+#endif /* CONFIG_PARAVIRT */
+
+#define raw_local_save_flags(flags) \
+ do { (flags) = __raw_local_save_flags(); } while (0)
/*
* For spinlocks, etc.:
*/
@@ -115,7 +132,7 @@ static inline int raw_irqs_disabled(void)
* Used in the idle loop; sti takes one instruction cycle
* to complete:
*/
-static inline void raw_safe_halt(void)
+static inline void native_raw_safe_halt(void)
{
__asm__ __volatile__("sti; hlt" : : : "memory");
}
@@ -124,11 +141,16 @@ static inline void raw_safe_halt(void)
* Used when interrupts are already enabled or to
* shutdown the processor:
*/
-static inline void halt(void)
+static inline void native_halt(void)
{
__asm__ __volatile__("hlt": : :"memory");
}
+#ifndef CONFIG_PARAVIRT
+#define raw_safe_halt native_raw_safe_halt
+#define halt native_halt
+#endif /* ! CONFIG_PARAVIRT */
+
#else /* __ASSEMBLY__: */
# ifdef CONFIG_TRACE_IRQFLAGS
# define TRACE_IRQS_ON call trace_hardirqs_on_thunk
--
1.4.4.2
-
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/
Powered by blists - more mailing lists