Commit 88f9e2f4 authored by Gu Zitao's avatar Gu Zitao Committed by guzitao
Browse files

sw64: add support for TIF_NOTIFY_SIGNAL 

Sunway inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I56U83



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

Wire up TIF_NOTIFY_SIGNAL handling for sw64.

Signed-off-by: default avatarGu Zitao <guzitao@wxiat.com>
Reviewed-by: default avatarHe Sheng <hesheng@wxiat.com>
Signed-off-by: default avatarGu Zitao <guzitao@wxiat.com>
parent 21a00858

arch/sw_64/include/asm/thread_info.h

+3 −1
Original line number Diff line number Diff line
@@ -87,6 +87,7 @@ static __always_inline u64 rtid(void) 
#define TIF_SYSCALL_AUDIT	4       /* syscall audit active */

#define TIF_UPROBE		5       /* uprobe breakpoint or singlestep */

#define TIF_PATCH_PENDING       6       /* pending live patching update */

#define TIF_NOTIFY_SIGNAL	7	/* signal notifications exist */

#define TIF_DIE_IF_KERNEL	9	/* dik recursion lock */

#define TIF_SYSCALL_TRACEPOINT	10

#define TIF_SECCOMP		11	/* secure computing */
@@ -101,13 +102,14 @@ static __always_inline u64 rtid(void) 
#define _TIF_SYSCALL_AUDIT	(1 << TIF_SYSCALL_AUDIT)

#define _TIF_POLLING_NRFLAG	(1 << TIF_POLLING_NRFLAG)

#define _TIF_SECCOMP		(1 << TIF_SECCOMP)

#define _TIF_NOTIFY_SIGNAL	(1 << TIF_NOTIFY_SIGNAL)

#define _TIF_SYSCALL_TRACEPOINT	(1 << TIF_SYSCALL_TRACEPOINT)

#define _TIF_UPROBE		(1 << TIF_UPROBE)



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

#define _TIF_WORK_MASK		(_TIF_SIGPENDING | _TIF_NEED_RESCHED | \

				 _TIF_NOTIFY_RESUME | _TIF_UPROBE | \

				 _TIF_PATCH_PENDING)

				 _TIF_PATCH_PENDING | _TIF_NOTIFY_SIGNAL)



#define _TIF_SYSCALL_WORK	(_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \

				 _TIF_SYSCALL_TRACEPOINT | _TIF_SECCOMP)

arch/sw_64/kernel/signal.c

+1 −1
Original line number Diff line number Diff line
@@ -366,7 +366,7 @@ do_notify_resume(struct pt_regs *regs, unsigned long thread_flags) 
		if (thread_flags & _TIF_PATCH_PENDING)

			klp_update_patch_state(current);



		if (thread_flags & _TIF_SIGPENDING)

		if (thread_flags & (_TIF_SIGPENDING | _TIF_NOTIFY_SIGNAL))

			do_signal(regs);



		if (thread_flags & _TIF_NOTIFY_RESUME) {