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Commit b7bab880 authored by David Howells's avatar David Howells Committed by Linus Torvalds
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FRV: Implement TIF_NOTIFY_RESUME 



Implement the TIF_NOTIFY_RESUME thread flag, making it call do_notify_resume()
which then clears it.  This will be made use of later by tracehooks in the
new-style ptrace implementation

Also discard TIF_IRET as that's not used by FRV.

Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent aa1913c0

arch/frv/include/asm/thread_info.h

+5 −5
Original line number Diff line number Diff line
@@ -109,20 +109,20 @@ register struct thread_info *__current_thread_info asm("gr15"); 
 * - other flags in MSW

 */

#define TIF_SYSCALL_TRACE	0	/* syscall trace active */

#define TIF_SIGPENDING		1	/* signal pending */

#define TIF_NEED_RESCHED	2	/* rescheduling necessary */

#define TIF_SINGLESTEP		3	/* restore singlestep on return to user mode */

#define TIF_IRET		4	/* return with iret */

#define TIF_NOTIFY_RESUME	1	/* callback before returning to user */

#define TIF_SIGPENDING		2	/* signal pending */

#define TIF_NEED_RESCHED	3	/* rescheduling necessary */

#define TIF_SINGLESTEP		4	/* restore singlestep on return to user mode */

#define TIF_RESTORE_SIGMASK	5	/* restore signal mask in do_signal() */

#define TIF_POLLING_NRFLAG	16	/* true if poll_idle() is polling TIF_NEED_RESCHED */

#define TIF_MEMDIE		17	/* OOM killer killed process */

#define TIF_FREEZE		18	/* freezing for suspend */



#define _TIF_SYSCALL_TRACE	(1 << TIF_SYSCALL_TRACE)

#define _TIF_NOTIFY_RESUME	(1 << TIF_NOTIFY_RESUME)

#define _TIF_SIGPENDING		(1 << TIF_SIGPENDING)

#define _TIF_NEED_RESCHED	(1 << TIF_NEED_RESCHED)

#define _TIF_SINGLESTEP		(1 << TIF_SINGLESTEP)

#define _TIF_IRET		(1 << TIF_IRET)

#define _TIF_RESTORE_SIGMASK	(1 << TIF_RESTORE_SIGMASK)

#define _TIF_POLLING_NRFLAG	(1 << TIF_POLLING_NRFLAG)

#define _TIF_FREEZE		(1 << TIF_FREEZE)

arch/frv/kernel/signal.c

+5 −0
Original line number Diff line number Diff line
@@ -564,4 +564,9 @@ asmlinkage void do_notify_resume(__u32 thread_info_flags) 
	if (thread_info_flags & (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK))

		do_signal();



	/* deal with notification on about to resume userspace execution */

	if (thread_info_flags & _TIF_NOTIFY_RESUME) {

		clear_thread_flag(TIF_NOTIFY_RESUME);

	}



} /* end do_notify_resume() */