Commit 191f8453 authored by Jens Axboe's avatar Jens Axboe
Browse files

ARM: renumber bits related to _TIF_WORK_MASK 



We want to ensure that the mask related to calling do_work_pending()
is within the first 16 bits. Move bits unrelated to that outside of
that range, to avoid spuriously calling do_work_pending() when we don't
need to.

Cc: stable@vger.kernel.org
Fixes: 32d59773 ("arm: add support for TIF_NOTIFY_SIGNAL")
Reported-and-tested-by: default avatarHui Tang <tanghui20@huawei.com>
Suggested-by: default avatarRussell King (Oracle) <linux@armlinux.org.uk>
Link: https://lore.kernel.org/lkml/7ecb8f3c-2aeb-a905-0d4a-aa768b9649b5@huawei.com/


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 69b41ac8

arch/arm/include/asm/thread_info.h

+7 −6
Original line number Diff line number Diff line
@@ -128,15 +128,16 @@ extern int vfp_restore_user_hwstate(struct user_vfp *, 
#define TIF_NEED_RESCHED	1	/* rescheduling necessary */

#define TIF_NOTIFY_RESUME	2	/* callback before returning to user */

#define TIF_UPROBE		3	/* breakpointed or singlestepping */

#define TIF_SYSCALL_TRACE	4	/* syscall trace active */

#define TIF_SYSCALL_AUDIT	5	/* syscall auditing active */

#define TIF_SYSCALL_TRACEPOINT	6	/* syscall tracepoint instrumentation */

#define TIF_SECCOMP		7	/* seccomp syscall filtering active */

#define TIF_NOTIFY_SIGNAL	8	/* signal notifications exist */

#define TIF_NOTIFY_SIGNAL	4	/* signal notifications exist */



#define TIF_USING_IWMMXT	17

#define TIF_MEMDIE		18	/* is terminating due to OOM killer */

#define TIF_RESTORE_SIGMASK	20

#define TIF_RESTORE_SIGMASK	19

#define TIF_SYSCALL_TRACE	20	/* syscall trace active */

#define TIF_SYSCALL_AUDIT	21	/* syscall auditing active */

#define TIF_SYSCALL_TRACEPOINT	22	/* syscall tracepoint instrumentation */

#define TIF_SECCOMP		23	/* seccomp syscall filtering active */





#define _TIF_SIGPENDING		(1 << TIF_SIGPENDING)

#define _TIF_NEED_RESCHED	(1 << TIF_NEED_RESCHED)