Commit 93387d49 authored by Linus Torvalds's avatar Linus Torvalds

Merge tag 'tif-notify-signal-2023-01-06' of git://git.kernel.dk/linux

Pull arm TIF_NOTIFY_SIGNAL fixup from Jens Axboe:
 "Hui Tang reported a performance regressions with _TIF_WORK_MASK in
  newer kernels, which he tracked to a change that went into 5.11. After
  this change, we'll call do_work_pending() more often than we need to,
  because we're now testing bits 0..15 rather than just 0..7.

  Shuffle the bits around to avoid this"

* tag 'tif-notify-signal-2023-01-06' of git://git.kernel.dk/linux:
  ARM: renumber bits related to _TIF_WORK_MASK
parents 5c1a712f 191f8453
...@@ -128,15 +128,16 @@ extern int vfp_restore_user_hwstate(struct user_vfp *, ...@@ -128,15 +128,16 @@ extern int vfp_restore_user_hwstate(struct user_vfp *,
#define TIF_NEED_RESCHED 1 /* rescheduling necessary */ #define TIF_NEED_RESCHED 1 /* rescheduling necessary */
#define TIF_NOTIFY_RESUME 2 /* callback before returning to user */ #define TIF_NOTIFY_RESUME 2 /* callback before returning to user */
#define TIF_UPROBE 3 /* breakpointed or singlestepping */ #define TIF_UPROBE 3 /* breakpointed or singlestepping */
#define TIF_SYSCALL_TRACE 4 /* syscall trace active */ #define TIF_NOTIFY_SIGNAL 4 /* signal notifications exist */
#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_USING_IWMMXT 17 #define TIF_USING_IWMMXT 17
#define TIF_MEMDIE 18 /* is terminating due to OOM killer */ #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_SIGPENDING (1 << TIF_SIGPENDING)
#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED)
......
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