Commit 5a9a8897 authored by Jens Axboe's avatar Jens Axboe
Browse files

alpha: add support for TIF_NOTIFY_SIGNAL 



Wire up TIF_NOTIFY_SIGNAL handling for alpha.

Cc: linux-alpha@vger.kernel.org
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent bec58f40

arch/alpha/include/asm/thread_info.h

+2 −0
Original line number Diff line number Diff line
@@ -62,6 +62,7 @@ register struct thread_info *__current_thread_info __asm__("$8"); 
#define TIF_SIGPENDING		2	/* signal pending */

#define TIF_NEED_RESCHED	3	/* rescheduling necessary */

#define TIF_SYSCALL_AUDIT	4	/* syscall audit active */

#define TIF_NOTIFY_SIGNAL	5	/* signal notifications exist */

#define TIF_DIE_IF_KERNEL	9	/* dik recursion lock */

#define TIF_MEMDIE		13	/* is terminating due to OOM killer */

#define TIF_POLLING_NRFLAG	14	/* idle is polling for TIF_NEED_RESCHED */
@@ -71,6 +72,7 @@ register struct thread_info *__current_thread_info __asm__("$8"); 
#define _TIF_NEED_RESCHED	(1<<TIF_NEED_RESCHED)

#define _TIF_NOTIFY_RESUME	(1<<TIF_NOTIFY_RESUME)

#define _TIF_SYSCALL_AUDIT	(1<<TIF_SYSCALL_AUDIT)

#define _TIF_NOTIFY_SIGNAL	(1<<TIF_NOTIFY_SIGNAL)

#define _TIF_POLLING_NRFLAG	(1<<TIF_POLLING_NRFLAG)



/* Work to do on interrupt/exception return.  */

arch/alpha/kernel/entry.S

+1 −1
Original line number Diff line number Diff line
@@ -544,7 +544,7 @@ $ret_success: 
	.align	4

	.type	work_pending, @function

work_pending:

	and	$17, _TIF_NOTIFY_RESUME | _TIF_SIGPENDING, $2

	and	$17, _TIF_NOTIFY_RESUME | _TIF_SIGPENDING | _TIF_NOTIFY_SIGNAL, $2

	bne	$2, $work_notifysig



$work_resched:

arch/alpha/kernel/signal.c

+1 −1
Original line number Diff line number Diff line
@@ -527,7 +527,7 @@ do_work_pending(struct pt_regs *regs, unsigned long thread_flags, 
			schedule();

		} else {

			local_irq_enable();

			if (thread_flags & _TIF_SIGPENDING) {

			if (thread_flags & (_TIF_SIGPENDING|_TIF_NOTIFY_SIGNAL)) {

				do_signal(regs, r0, r19);

				r0 = 0;

			} else {