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: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/arch/frv/kernel/signal.c b/arch/frv/kernel/signal.c
index 3bdb368292a8..7ae290a161de 100644
--- a/arch/frv/kernel/signal.c
+++ b/arch/frv/kernel/signal.c
@@ -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() */