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Blackfin arch: disable pthread stack check for SMP at runtime

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Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
This commit is contained in:
Sonic Zhang 2009-01-07 23:14:38 +08:00 • committed by Bryan Wu
parent 459249aa2d
commit cc92b870a7
4 changed files with 22 additions and 0 deletions
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7
arch/blackfin/include/asm/system.h
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@ -197,6 +197,7 @@ static inline unsigned long __xchg(unsigned long x, volatile void *ptr,
asmlinkage struct task_struct *resume(struct task_struct *prev, struct task_struct *next);
#ifndef CONFIG_SMP
#define switch_to(prev,next,last) \
do { \
memcpy (&task_thread_info(prev)->l1_task_info, L1_SCRATCH_TASK_INFO, \
@ -205,5 +206,11 @@ do { \
sizeof *L1_SCRATCH_TASK_INFO); \
(last) = resume (prev, next); \
} while (0)
#else
#define switch_to(prev, next, last) \
do { \
(last) = resume(prev, next); \
} while (0)
#endif
#endif /* _BLACKFIN_SYSTEM_H */