Commit a5b3cd32 authored by Jens Axboe's avatar Jens Axboe
Browse files

um: add support for TIF_NOTIFY_SIGNAL 



Wire up TIF_NOTIFY_SIGNAL handling for um.

Cc: linux-um@lists.infradead.org
Acked-By: default avatarAnton Ivanov <anton.ivanov@cambridgegreys.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 75309018

arch/um/include/asm/thread_info.h

+2 −0
Original line number Diff line number Diff line
@@ -57,6 +57,7 @@ static inline struct thread_info *current_thread_info(void) 
#define TIF_SYSCALL_TRACE	0	/* syscall trace active */

#define TIF_SIGPENDING		1	/* signal pending */

#define TIF_NEED_RESCHED	2	/* rescheduling necessary */

#define TIF_NOTIFY_SIGNAL	3	/* signal notifications exist */

#define TIF_RESTART_BLOCK	4

#define TIF_MEMDIE		5	/* is terminating due to OOM killer */

#define TIF_SYSCALL_AUDIT	6
@@ -67,6 +68,7 @@ static inline struct thread_info *current_thread_info(void) 
#define _TIF_SYSCALL_TRACE	(1 << TIF_SYSCALL_TRACE)

#define _TIF_SIGPENDING		(1 << TIF_SIGPENDING)

#define _TIF_NEED_RESCHED	(1 << TIF_NEED_RESCHED)

#define _TIF_NOTIFY_SIGNAL	(1 << TIF_NOTIFY_SIGNAL)

#define _TIF_MEMDIE		(1 << TIF_MEMDIE)

#define _TIF_SYSCALL_AUDIT	(1 << TIF_SYSCALL_AUDIT)

#define _TIF_SECCOMP		(1 << TIF_SECCOMP)

arch/um/kernel/process.c

+2 −1
Original line number Diff line number Diff line
@@ -99,7 +99,8 @@ void interrupt_end(void) 


	if (need_resched())

		schedule();

	if (test_thread_flag(TIF_SIGPENDING))

	if (test_thread_flag(TIF_SIGPENDING) ||

	    test_thread_flag(TIF_NOTIFY_SIGNAL))

		do_signal(regs);

	if (test_thread_flag(TIF_NOTIFY_RESUME))

		tracehook_notify_resume(regs);