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[S390] current_thread_info optimization

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Use thread_info lowcore field for current_thread_info(), saves
an unnecessary calculation.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky
2011-01-05 12:47:42 +01:00
committed by Martin Schwidefsky
parent b1b7509185
commit 6432c015b7
1 changed files with 1 additions and 1 deletions
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arch/s390/include/asm/thread_info.h
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@@ -74,7 +74,7 @@ struct thread_info {
/* how to get the thread information struct from C */ /* how to get the thread information struct from C */
static inline struct thread_info *current_thread_info(void) static inline struct thread_info *current_thread_info(void)
{ {
return (struct thread_info *)(S390_lowcore.kernel_stack - THREAD_SIZE); return (struct thread_info *) S390_lowcore.thread_info;
} }
#define THREAD_SIZE_ORDER THREAD_ORDER #define THREAD_SIZE_ORDER THREAD_ORDER