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[S390] Add is_32bit_task() helper function

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Helper function which tells us if a task is running in ESA mode.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens
2011-01-12 09:55:29 +01:00
committed by Martin Schwidefsky
parent 9887a1fcdd
commit a05c90f194
2 changed files with 7 additions and 1 deletions
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6
arch/s390/include/asm/thread_info.h
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@@ -118,6 +118,12 @@ static inline struct thread_info *current_thread_info(void)
#define _TIF_SINGLE_STEP (1<<TIF_FREEZE)
#define _TIF_FREEZE (1<<TIF_FREEZE)
#ifdef CONFIG_64BIT
#define is_32bit_task() (test_thread_flag(TIF_31BIT))
#else
#define is_32bit_task() (1)
#endif
#endif /* __KERNEL__ */
#define PREEMPT_ACTIVE 0x4000000