It's available everywhere now, no need to check or add dummy defines.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
# define _TIF_UPROBE (0)
#endif
-#ifndef _TIF_NOTIFY_SIGNAL
-# define _TIF_NOTIFY_SIGNAL (0)
-#endif
-
/*
* TIF flags handled in syscall_enter_from_user_mode()
*/
static inline int signal_pending(struct task_struct *p)
{
-#if defined(TIF_NOTIFY_SIGNAL)
/*
* TIF_NOTIFY_SIGNAL isn't really a signal, but it requires the same
* behavior in terms of ensuring that we break out of wait loops
*/
if (unlikely(test_tsk_thread_flag(p, TIF_NOTIFY_SIGNAL)))
return 1;
-#endif
return task_sigpending(p);
}
*/
static inline void tracehook_notify_signal(void)
{
-#if defined(TIF_NOTIFY_SIGNAL)
clear_thread_flag(TIF_NOTIFY_SIGNAL);
smp_mb__after_atomic();
if (current->task_works)
task_work_run();
-#endif
}
/*
*/
static inline void set_notify_signal(struct task_struct *task)
{
-#if defined(TIF_NOTIFY_SIGNAL)
if (!test_and_set_tsk_thread_flag(task, TIF_NOTIFY_SIGNAL) &&
!wake_up_state(task, TASK_INTERRUPTIBLE))
kick_process(task);
-#endif
}
#endif /* <linux/tracehook.h> */
* that the arch handlers don't all have to do it. If we get here
* without TIF_SIGPENDING, just exit after running signal work.
*/
-#ifdef TIF_NOTIFY_SIGNAL
if (!IS_ENABLED(CONFIG_GENERIC_ENTRY)) {
if (test_thread_flag(TIF_NOTIFY_SIGNAL))
tracehook_notify_signal();
if (!task_sigpending(current))
return false;
}
-#endif
if (unlikely(uprobe_deny_signal()))
return false;