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arm: trim _TIF_WORK_MASK, get rid of useless test and branch... 

Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
hifive-unleashed-5.1
Al Viro 2012-04-24 16:40:34 -04:00
parent 7f1b5a9966
commit 84849b3ed8
2 changed files with 4 additions and 3 deletions
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2
arch/arm/include/asm/thread_info.h
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@ -170,7 +170,7 @@ extern int vfp_restore_user_hwstate(struct user_vfp __user *,
/*
* Change these and you break ASM code in entry-common.S
*/
#define _TIF_WORK_MASK 0x000000ff
#define _TIF_WORK_MASK (_TIF_NEED_RESCHED | _TIF_SIGPENDING | _TIF_NOTIFY_RESUME)
#endif /* __KERNEL__ */
#endif /* __ASM_ARM_THREAD_INFO_H */

5
arch/arm/kernel/entry-common.S
View File

@ -53,8 +53,9 @@ fast_work_pending:
work_pending:
tst r1, #_TIF_NEED_RESCHED
bne work_resched
tst r1, #_TIF_SIGPENDING|_TIF_NOTIFY_RESUME
beq no_work_pending
/*
* TIF_SIGPENDING or TIF_NOTIFY_RESUME must've been set if we got here
*/
mov r0, sp @ 'regs'
mov r2, why @ 'syscall'
tst r1, #_TIF_SIGPENDING @ delivering a signal?