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author | Ingo Molnar <mingo@elte.hu> | 2006-07-03 07:24:45 (GMT) |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-07-03 22:27:03 (GMT) |
commit | 6375e2b74c620794e1a27a26e4338aec2e41346a (patch) | |
tree | f966478bc214af98e9ca6235506377b5dd872526 /include | |
parent | 2601e64d262ee5ed4d4a5737345803800d9c4db3 (diff) | |
download | linux-fsl-qoriq-6375e2b74c620794e1a27a26e4338aec2e41346a.tar.xz |
[PATCH] lockdep: irqtrace cleanup of include/asm-x86_64/irqflags.h
Clean up the x86-64 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>
Cc: Andi Kleen <ak@muc.de>
Cc: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include')
-rw-r--r-- | include/asm-x86_64/irqflags.h | 156 |
1 files changed, 118 insertions, 38 deletions
diff --git a/include/asm-x86_64/irqflags.h b/include/asm-x86_64/irqflags.h index 22f3c06..cce6937 100644 --- a/include/asm-x86_64/irqflags.h +++ b/include/asm-x86_64/irqflags.h @@ -5,57 +5,137 @@ * * 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 #ifndef __ASSEMBLY__ +/* + * Interrupt control: + */ + +static inline unsigned long __raw_local_save_flags(void) +{ + unsigned long flags; + + __asm__ __volatile__( + "# __raw_save_flags\n\t" + "pushfq ; popq %q0" + : "=g" (flags) + : /* no input */ + : "memory" + ); -/* interrupt control.. */ -#define raw_local_save_flags(x) do { warn_if_not_ulong(x); __asm__ __volatile__("# save_flags \n\t pushfq ; popq %q0":"=g" (x): /* no input */ :"memory"); } while (0) -#define raw_local_irq_restore(x) __asm__ __volatile__("# restore_flags \n\t pushq %0 ; popfq": /* no output */ :"g" (x):"memory", "cc") + 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__( + "pushq %0 ; popfq" + : /* no output */ + :"g" (flags) + :"memory", "cc" + ); +} #ifdef CONFIG_X86_VSMP -/* Interrupt control for VSMP architecture */ -#define raw_local_irq_disable() do { unsigned long flags; raw_local_save_flags(flags); raw_local_irq_restore((flags & ~(1 << 9)) | (1 << 18)); } while (0) -#define raw_local_irq_enable() do { unsigned long flags; raw_local_save_flags(flags); raw_local_irq_restore((flags | (1 << 9)) & ~(1 << 18)); } while (0) - -#define raw_irqs_disabled_flags(flags) \ -({ \ - (flags & (1<<18)) || !(flags & (1<<9)); \ -}) - -/* For spinlocks etc */ -#define raw_local_irq_save(x) do { raw_local_save_flags(x); raw_local_irq_restore((x & ~(1 << 9)) | (1 << 18)); } while (0) -#else /* CONFIG_X86_VSMP */ -#define raw_local_irq_disable() __asm__ __volatile__("cli": : :"memory") -#define raw_local_irq_enable() __asm__ __volatile__("sti": : :"memory") - -#define raw_irqs_disabled_flags(flags) \ -({ \ - !(flags & (1<<9)); \ -}) - -/* For spinlocks etc */ -#define raw_local_irq_save(x) do { warn_if_not_ulong(x); __asm__ __volatile__("# raw_local_irq_save \n\t pushfq ; popq %0 ; cli":"=g" (x): /* no input */ :"memory"); } while (0) + +/* + * Interrupt control for the VSMP architecture: + */ + +static inline void raw_local_irq_disable(void) +{ + unsigned long flags = __raw_local_save_flags(); + + raw_local_irq_restore((flags & ~(1 << 9)) | (1 << 18)); +} + +static inline void raw_local_irq_enable(void) +{ + unsigned long flags = __raw_local_save_flags(); + + raw_local_irq_restore((flags | (1 << 9)) & ~(1 << 18)); +} + +static inline int raw_irqs_disabled_flags(unsigned long flags) +{ + return !(flags & (1<<9)) || (flags & (1 << 18)); +} + +#else /* CONFIG_X86_VSMP */ + +static inline void raw_local_irq_disable(void) +{ + __asm__ __volatile__("cli" : : : "memory"); +} + +static inline void raw_local_irq_enable(void) +{ + __asm__ __volatile__("sti" : : : "memory"); +} + +static inline int raw_irqs_disabled_flags(unsigned long flags) +{ + return !(flags & (1 << 9)); +} + #endif -#define raw_irqs_disabled() \ -({ \ - unsigned long flags; \ - raw_local_save_flags(flags); \ - 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; +} -/* 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") +#define raw_local_irq_save(flags) \ + do { (flags) = __raw_local_irq_save(); } while (0) + +static inline int raw_irqs_disabled(void) +{ + unsigned long flags = __raw_local_save_flags(); + + return raw_irqs_disabled_flags(flags); +} + +/* + * 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"); +} #else /* __ASSEMBLY__: */ -# define TRACE_IRQS_ON -# define TRACE_IRQS_OFF +# ifdef CONFIG_TRACE_IRQFLAGS +# define TRACE_IRQS_ON call trace_hardirqs_on_thunk +# define TRACE_IRQS_OFF call trace_hardirqs_off_thunk +# else +# define TRACE_IRQS_ON +# define TRACE_IRQS_OFF +# endif #endif #endif |