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yaml
---
r: 217434
b: refs/heads/master
c: dbec921
h: refs/heads/master
v: v3
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Richard Weinberger authored and Linus Torvalds committed Oct 26, 2010
1 parent fd7f664 commit 8442a7d
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Showing 2 changed files with 33 additions and 18 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 8474b591faf3bb0a1e08a60d21d6baac498f15e4
refs/heads/master: dbec921370ea049eccd38e34e067373fb3bd9b01
49 changes: 32 additions & 17 deletions trunk/arch/um/include/asm/system.h
Original file line number Diff line number Diff line change
Expand Up @@ -8,23 +8,38 @@ extern int set_signals(int enable);
extern void block_signals(void);
extern void unblock_signals(void);

#define local_save_flags(flags) do { typecheck(unsigned long, flags); \
(flags) = get_signals(); } while(0)
#define local_irq_restore(flags) do { typecheck(unsigned long, flags); \
set_signals(flags); } while(0)

#define local_irq_save(flags) do { local_save_flags(flags); \
local_irq_disable(); } while(0)

#define local_irq_enable() unblock_signals()
#define local_irq_disable() block_signals()

#define irqs_disabled() \
({ \
unsigned long flags; \
local_save_flags(flags); \
(flags == 0); \
})
static inline unsigned long arch_local_save_flags(void)
{
return get_signals();
}

static inline void arch_local_irq_restore(unsigned long flags)
{
set_signals(flags);
}

static inline void arch_local_irq_enable(void)
{
unblock_signals();
}

static inline void arch_local_irq_disable(void)
{
block_signals();
}

static inline unsigned long arch_local_irq_save(void)
{
unsigned long flags;
flags = arch_local_save_flags();
arch_local_irq_disable();
return flags;
}

static inline bool arch_irqs_disabled(void)
{
return arch_local_save_flags() == 0;
}

extern void *_switch_to(void *prev, void *next, void *last);
#define switch_to(prev, next, last) prev = _switch_to(prev, next, last)
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