[PATCH 6.0 001/148] ARM: renumber bits related to _TIF_WORK_MASK

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From: Jens Axboe <axboe@xxxxxxxxx>

commit 191f8453fc99a537ea78b727acea739782378b0d upstream.

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@xxxxxxxxxxxxxxx
Fixes: 32d59773da38 ("arm: add support for TIF_NOTIFY_SIGNAL")
Reported-and-tested-by: Hui Tang <tanghui20@xxxxxxxxxx>
Suggested-by: Russell King (Oracle) <linux@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/lkml/7ecb8f3c-2aeb-a905-0d4a-aa768b9649b5@xxxxxxxxxx/
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 arch/arm/include/asm/thread_info.h |   13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

--- a/arch/arm/include/asm/thread_info.h
+++ b/arch/arm/include/asm/thread_info.h
@@ -128,15 +128,16 @@ extern int vfp_restore_user_hwstate(stru
 #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)





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