Commit 192caabd authored by Jens Axboe's avatar Jens Axboe
Browse files

arm64: add support for TIF_NOTIFY_SIGNAL 



Wire up TIF_NOTIFY_SIGNAL handling for arm64.

Cc: linux-arm-kernel@lists.infradead.org
Acked-by: default avatarWill Deacon <will@kernel.org>
Acked-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 53855e12

arch/arm64/include/asm/thread_info.h

+4 −1
Original line number Diff line number Diff line
@@ -68,6 +68,7 @@ void arch_release_task_struct(struct task_struct *tsk); 
#define TIF_UPROBE		4	/* uprobe breakpoint or singlestep */

#define TIF_FSCHECK		5	/* Check FS is USER_DS on return */

#define TIF_MTE_ASYNC_FAULT	6	/* MTE Asynchronous Tag Check Fault */

#define TIF_NOTIFY_SIGNAL	7	/* signal notifications exist */

#define TIF_SYSCALL_TRACE	8	/* syscall trace active */

#define TIF_SYSCALL_AUDIT	9	/* syscall auditing */

#define TIF_SYSCALL_TRACEPOINT	10	/* syscall tracepoint for ftrace */
@@ -98,10 +99,12 @@ void arch_release_task_struct(struct task_struct *tsk); 
#define _TIF_32BIT		(1 << TIF_32BIT)

#define _TIF_SVE		(1 << TIF_SVE)

#define _TIF_MTE_ASYNC_FAULT	(1 << TIF_MTE_ASYNC_FAULT)

#define _TIF_NOTIFY_SIGNAL	(1 << TIF_NOTIFY_SIGNAL)



#define _TIF_WORK_MASK		(_TIF_NEED_RESCHED | _TIF_SIGPENDING | \

				 _TIF_NOTIFY_RESUME | _TIF_FOREIGN_FPSTATE | \

				 _TIF_UPROBE | _TIF_FSCHECK | _TIF_MTE_ASYNC_FAULT)

				 _TIF_UPROBE | _TIF_FSCHECK | _TIF_MTE_ASYNC_FAULT | \

				 _TIF_NOTIFY_SIGNAL)



#define _TIF_SYSCALL_WORK	(_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \

				 _TIF_SYSCALL_TRACEPOINT | _TIF_SECCOMP | \

arch/arm64/kernel/signal.c

+1 −1
Original line number Diff line number Diff line
@@ -942,7 +942,7 @@ asmlinkage void do_notify_resume(struct pt_regs *regs, 
					       (void __user *)NULL, current);

			}



			if (thread_flags & _TIF_SIGPENDING)

			if (thread_flags & (_TIF_SIGPENDING | _TIF_NOTIFY_SIGNAL))

				do_signal(regs);



			if (thread_flags & _TIF_NOTIFY_RESUME) {