Commit 481f4f07 authored Oct 09, 2020 by Jens Axboe Committed by sanglipeng Jul 31, 2023

openrisc: add support for TIF_NOTIFY_SIGNAL

stable inclusion
from stable-v5.10.162
commit 12284aec880fc9f06d98d2fee28982c030cf99cf
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=12284aec880fc9f06d98d2fee28982c030cf99cf



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

[ Upstream commit e181c0aa ]

Wire up TIF_NOTIFY_SIGNAL handling for openrisc.

Cc: openrisc@lists.librecores.org
Acked-by: Stafford Horne <shorne@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: sanglipeng <sanglipeng1@jd.com>

parent 76e816c0

arch/openrisc/include/asm/thread_info.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -98,6 +98,7 @@ register struct thread_info *current_thread_info_reg asm("r10");
		#define TIF_SINGLESTEP 4 /* restore singlestep on return to user
		* mode
		*/
		#define TIF_NOTIFY_SIGNAL 5 /* signal notifications exist */
		#define TIF_SYSCALL_TRACEPOINT 8 /* for ftrace syscall instrumentation */
		#define TIF_RESTORE_SIGMASK 9
		#define TIF_POLLING_NRFLAG 16 /* true if poll_idle() is polling * TIF_NEED_RESCHED
		@@ -109,6 +110,7 @@ register struct thread_info *current_thread_info_reg asm("r10");
		#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)
		#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)

arch/openrisc/kernel/signal.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -299,7 +299,7 @@ do_work_pending(struct pt_regs *regs, unsigned int thread_flags, int syscall)
		if (unlikely(!user_mode(regs)))
		return 0;
		local_irq_enable();
		if (thread_flags & _TIF_SIGPENDING) {
		if (thread_flags & (_TIF_SIGPENDING\|_TIF_NOTIFY_SIGNAL)) {
		int restart = do_signal(regs, syscall);
		if (unlikely(restart)) {
		/*