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[PATCH] lockdep: irqtrace cleanup of include/asm-i386/irqflags.h 

Clean up the x86 irqflags.h file:

 - macro => inline function transformation
 - simplifications
 - style fixes

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Ingo Molnar 2006-07-03 00:24:44 -07:00 committed by Linus Torvalds
parent 55f327fa9e
commit c8558fcdec
1 changed files with 83 additions and 12 deletions
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95
include/asm-i386/irqflags.h
View File

@ -5,24 +5,95 @@
*
* This file gets included from lowlevel asm headers too, to provide
* wrapped versions of the local_irq_*() APIs, based on the
* raw_local_irq_*() macros from the lowlevel headers.
* raw_local_irq_*() functions from the lowlevel headers.
*/
#ifndef _ASM_IRQFLAGS_H
#define _ASM_IRQFLAGS_H
#define raw_local_save_flags(x) do { typecheck(unsigned long,x); __asm__ __volatile__("pushfl ; popl %0":"=g" (x): /* no input */); } while (0)
#define raw_local_irq_restore(x) do { typecheck(unsigned long,x); __asm__ __volatile__("pushl %0 ; popfl": /* no output */ :"g" (x):"memory", "cc"); } while (0)
#define raw_local_irq_disable() __asm__ __volatile__("cli": : :"memory")
#define raw_local_irq_enable() __asm__ __volatile__("sti": : :"memory")
/* used in the idle loop; sti takes one instruction cycle to complete */
#define raw_safe_halt() __asm__ __volatile__("sti; hlt": : :"memory")
/* used when interrupts are already enabled or to shutdown the processor */
#define halt() __asm__ __volatile__("hlt": : :"memory")
#ifndef __ASSEMBLY__
#define raw_irqs_disabled_flags(flags) (!((flags) & (1<<9)))
static inline unsigned long __raw_local_save_flags(void)
{
unsigned long flags;
/* For spinlocks etc */
#define raw_local_irq_save(x) __asm__ __volatile__("pushfl ; popl %0 ; cli":"=g" (x): /* no input */ :"memory")
__asm__ __volatile__(
"pushfl ; popl %0"
: "=g" (flags)
: /* no input */
);
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__(
"pushl %0 ; popfl"
: /* no output */
:"g" (flags)
:"memory", "cc"
);
}
static inline void raw_local_irq_disable(void)
{
__asm__ __volatile__("cli" : : : "memory");
}
static inline void raw_local_irq_enable(void)
{
__asm__ __volatile__("sti" : : : "memory");
}
/*
* Used in the idle loop; sti takes one instruction cycle
* to complete:
*/
static inline void raw_safe_halt(void)
{
__asm__ __volatile__("sti; hlt" : : : "memory");
}
/*
* Used when interrupts are already enabled or to
* shutdown the processor:
*/
static inline void halt(void)
{
__asm__ __volatile__("hlt": : :"memory");
}
static inline int raw_irqs_disabled_flags(unsigned long flags)
{
return !(flags & (1 << 9));
}
static inline int raw_irqs_disabled(void)
{
unsigned long flags = __raw_local_save_flags();
return raw_irqs_disabled_flags(flags);
}
/*
* For spinlocks, etc:
*/
static inline unsigned long __raw_local_irq_save(void)
{
unsigned long flags = __raw_local_save_flags();
raw_local_irq_disable();
return flags;
}
#define raw_local_irq_save(flags) \
do { (flags) = __raw_local_irq_save(); } while (0)
#endif /* __ASSEMBLY__ */
/*
* Do the CPU's IRQ-state tracing from assembly code. We call a