Merge tag 'livepatching-for-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching

Pull livepatching update from Petr Mladek:

- Use TIF_NOTIFY_SIGNAL infrastructure instead of the fake signal

* tag 'livepatching-for-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching:
livepatch: Replace the fake signal sending with TIF_NOTIFY_SIGNAL infrastructure

kernel/livepatch/transition.c

···
 
 #include <linux/cpu.h>
 #include <linux/stacktrace.h>
+#include <linux/tracehook.h>
 #include "core.h"
 #include "patch.h"
 #include "transition.h"
···
 			 * Send fake signal to all non-kthread tasks which are
 			 * still not migrated.
 			 */
-			spin_lock_irq(&task->sighand->siglock);
-			signal_wake_up(task, 0);
-			spin_unlock_irq(&task->sighand->siglock);
+			set_notify_signal(task);
 		}
 	}
 	read_unlock(&tasklist_lock);

kernel/signal.c

···
 #include <linux/cn_proc.h>
 #include <linux/compiler.h>
 #include <linux/posix-timers.h>
-#include <linux/livepatch.h>
 #include <linux/cgroup.h>
 #include <linux/audit.h>
 
···
 
 void recalc_sigpending(void)
 {
-	if (!recalc_sigpending_tsk(current) && !freezing(current) &&
-	    !klp_patch_pending(current))
+	if (!recalc_sigpending_tsk(current) && !freezing(current))
 		clear_thread_flag(TIF_SIGPENDING);
 
 }