Commit 42a08b5b authored by Jens Axboe's avatar Jens Axboe Committed by sanglipeng
Browse files

hexagon: add support for TIF_NOTIFY_SIGNAL 

stable inclusion
from stable-v5.10.162
commit 19f3e328b4c6202198f27a3b899811d4a118333f
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I7P7OH

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=19f3e328b4c6202198f27a3b899811d4a118333f



--------------------------------

[ Upstream commit aeec8193 ]

Wire up TIF_NOTIFY_SIGNAL handling for hexagon.

Cc: linux-hexagon@vger.kernel.org
Acked-by: default avatarBrian Cain <bcain@codeaurora.org>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarsanglipeng <sanglipeng1@jd.com>
parent 661fd74b

arch/hexagon/include/asm/thread_info.h

+2 −0
Original line number Diff line number Diff line
@@ -95,6 +95,7 @@ register struct thread_info *__current_thread_info asm(QUOTED_THREADINFO_REG); 
#define TIF_NEED_RESCHED        3       /* rescheduling necessary */

#define TIF_SINGLESTEP          4       /* restore ss @ return to usr mode */

#define TIF_RESTORE_SIGMASK     6       /* restore sig mask in do_signal() */

#define TIF_NOTIFY_SIGNAL	7       /* signal notifications exist */

/* true if poll_idle() is polling TIF_NEED_RESCHED */

#define TIF_MEMDIE              17      /* OOM killer killed process */
@@ -103,6 +104,7 @@ register struct thread_info *__current_thread_info asm(QUOTED_THREADINFO_REG); 
#define _TIF_SIGPENDING         (1 << TIF_SIGPENDING)

#define _TIF_NEED_RESCHED       (1 << TIF_NEED_RESCHED)

#define _TIF_SINGLESTEP         (1 << TIF_SINGLESTEP)

#define _TIF_NOTIFY_SIGNAL	(1 << TIF_NOTIFY_SIGNAL)



/* work to do on interrupt/exception return - All but TIF_SYSCALL_TRACE */

#define _TIF_WORK_MASK          (0x0000FFFF & ~_TIF_SYSCALL_TRACE)

arch/hexagon/kernel/process.c

+1 −1
Original line number Diff line number Diff line
@@ -174,7 +174,7 @@ int do_work_pending(struct pt_regs *regs, u32 thread_info_flags) 
		return 1;

	}



	if (thread_info_flags & _TIF_SIGPENDING) {

	if (thread_info_flags & (_TIF_SIGPENDING | _TIF_NOTIFY_SIGNAL)) {

		do_signal(regs);

		return 1;

	}