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>

diff --git a/arch/arm/include/asm/thread_info.h b/arch/arm/include/asm/thread_info.h
index 0f04d84..2d0cfc2 100644 (file)
--- a/arch/arm/include/asm/thread_info.h
+++ b/arch/arm/include/asm/thread_info.h
@@ -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 */

diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S
index 54ee265..82aaf0a 100644 (file)
--- a/arch/arm/kernel/entry-common.S
+++ b/arch/arm/kernel/entry-common.S
@@ -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?