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From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: stable@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	patches@lists.linux.dev, linux-snps-arc@lists.infradead.org,
	Vineet Gupta <vgupta@synopsys.com>, Jens Axboe <axboe@kernel.dk>
Subject: [PATCH 5.10 18/63] arc: add support for TIF_NOTIFY_SIGNAL
Date: Tue,  3 Jan 2023 09:13:48 +0100	[thread overview]
Message-ID: <20230103081309.660230284@linuxfoundation.org> (raw)
In-Reply-To: <20230103081308.548338576@linuxfoundation.org>

From: Jens Axboe <axboe@kernel.dk>

[ Upstream commit 53855e12588743ea128ee31f913d1c6e2f1d32c8 ]

Wire up TIF_NOTIFY_SIGNAL handling for arc.

Cc: linux-snps-arc@lists.infradead.org
Acked-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/arc/include/asm/thread_info.h |    4 +++-
 arch/arc/kernel/entry.S            |    3 ++-
 arch/arc/kernel/signal.c           |    2 +-
 3 files changed, 6 insertions(+), 3 deletions(-)

--- a/arch/arc/include/asm/thread_info.h
+++ b/arch/arc/include/asm/thread_info.h
@@ -79,6 +79,7 @@ static inline __attribute_const__ struct
 #define TIF_SIGPENDING		2	/* signal pending */
 #define TIF_NEED_RESCHED	3	/* rescheduling necessary */
 #define TIF_SYSCALL_AUDIT	4	/* syscall auditing active */
+#define TIF_NOTIFY_SIGNAL	5	/* signal notifications exist */
 #define TIF_SYSCALL_TRACE	15	/* syscall trace active */
 
 /* true if poll_idle() is polling TIF_NEED_RESCHED */
@@ -89,11 +90,12 @@ static inline __attribute_const__ struct
 #define _TIF_SIGPENDING		(1<<TIF_SIGPENDING)
 #define _TIF_NEED_RESCHED	(1<<TIF_NEED_RESCHED)
 #define _TIF_SYSCALL_AUDIT	(1<<TIF_SYSCALL_AUDIT)
+#define _TIF_NOTIFY_SIGNAL	(1<<TIF_NOTIFY_SIGNAL)
 #define _TIF_MEMDIE		(1<<TIF_MEMDIE)
 
 /* work to do on interrupt/exception return */
 #define _TIF_WORK_MASK		(_TIF_NEED_RESCHED | _TIF_SIGPENDING | \
-				 _TIF_NOTIFY_RESUME)
+				 _TIF_NOTIFY_RESUME | _TIF_NOTIFY_SIGNAL)
 
 /*
  * _TIF_ALLWORK_MASK includes SYSCALL_TRACE, but we don't need it.
--- a/arch/arc/kernel/entry.S
+++ b/arch/arc/kernel/entry.S
@@ -308,7 +308,8 @@ resume_user_mode_begin:
 	mov r0, sp	; pt_regs for arg to do_signal()/do_notify_resume()
 
 	GET_CURR_THR_INFO_FLAGS   r9
-	bbit0  r9, TIF_SIGPENDING, .Lchk_notify_resume
+	and.f  0,  r9, TIF_SIGPENDING|TIF_NOTIFY_SIGNAL
+	bz .Lchk_notify_resume
 
 	; Normal Trap/IRQ entry only saves Scratch (caller-saved) regs
 	; in pt_reg since the "C" ABI (kernel code) will automatically
--- a/arch/arc/kernel/signal.c
+++ b/arch/arc/kernel/signal.c
@@ -405,7 +405,7 @@ void do_signal(struct pt_regs *regs)
 
 	restart_scall = in_syscall(regs) && syscall_restartable(regs);
 
-	if (get_signal(&ksig)) {
+	if (test_thread_flag(TIF_SIGPENDING) && get_signal(&ksig)) {
 		if (restart_scall) {
 			arc_restart_syscall(&ksig.ka, regs);
 			syscall_wont_restart(regs);	/* No more restarts */



WARNING: multiple messages have this Message-ID (diff)
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: stable@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	patches@lists.linux.dev, linux-snps-arc@lists.infradead.org,
	Vineet Gupta <vgupta@synopsys.com>, Jens Axboe <axboe@kernel.dk>
Subject: [PATCH 5.10 18/63] arc: add support for TIF_NOTIFY_SIGNAL
Date: Tue,  3 Jan 2023 09:13:48 +0100	[thread overview]
Message-ID: <20230103081309.660230284@linuxfoundation.org> (raw)
In-Reply-To: <20230103081308.548338576@linuxfoundation.org>

From: Jens Axboe <axboe@kernel.dk>

[ Upstream commit 53855e12588743ea128ee31f913d1c6e2f1d32c8 ]

Wire up TIF_NOTIFY_SIGNAL handling for arc.

Cc: linux-snps-arc@lists.infradead.org
Acked-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/arc/include/asm/thread_info.h |    4 +++-
 arch/arc/kernel/entry.S            |    3 ++-
 arch/arc/kernel/signal.c           |    2 +-
 3 files changed, 6 insertions(+), 3 deletions(-)

--- a/arch/arc/include/asm/thread_info.h
+++ b/arch/arc/include/asm/thread_info.h
@@ -79,6 +79,7 @@ static inline __attribute_const__ struct
 #define TIF_SIGPENDING		2	/* signal pending */
 #define TIF_NEED_RESCHED	3	/* rescheduling necessary */
 #define TIF_SYSCALL_AUDIT	4	/* syscall auditing active */
+#define TIF_NOTIFY_SIGNAL	5	/* signal notifications exist */
 #define TIF_SYSCALL_TRACE	15	/* syscall trace active */
 
 /* true if poll_idle() is polling TIF_NEED_RESCHED */
@@ -89,11 +90,12 @@ static inline __attribute_const__ struct
 #define _TIF_SIGPENDING		(1<<TIF_SIGPENDING)
 #define _TIF_NEED_RESCHED	(1<<TIF_NEED_RESCHED)
 #define _TIF_SYSCALL_AUDIT	(1<<TIF_SYSCALL_AUDIT)
+#define _TIF_NOTIFY_SIGNAL	(1<<TIF_NOTIFY_SIGNAL)
 #define _TIF_MEMDIE		(1<<TIF_MEMDIE)
 
 /* work to do on interrupt/exception return */
 #define _TIF_WORK_MASK		(_TIF_NEED_RESCHED | _TIF_SIGPENDING | \
-				 _TIF_NOTIFY_RESUME)
+				 _TIF_NOTIFY_RESUME | _TIF_NOTIFY_SIGNAL)
 
 /*
  * _TIF_ALLWORK_MASK includes SYSCALL_TRACE, but we don't need it.
--- a/arch/arc/kernel/entry.S
+++ b/arch/arc/kernel/entry.S
@@ -308,7 +308,8 @@ resume_user_mode_begin:
 	mov r0, sp	; pt_regs for arg to do_signal()/do_notify_resume()
 
 	GET_CURR_THR_INFO_FLAGS   r9
-	bbit0  r9, TIF_SIGPENDING, .Lchk_notify_resume
+	and.f  0,  r9, TIF_SIGPENDING|TIF_NOTIFY_SIGNAL
+	bz .Lchk_notify_resume
 
 	; Normal Trap/IRQ entry only saves Scratch (caller-saved) regs
 	; in pt_reg since the "C" ABI (kernel code) will automatically
--- a/arch/arc/kernel/signal.c
+++ b/arch/arc/kernel/signal.c
@@ -405,7 +405,7 @@ void do_signal(struct pt_regs *regs)
 
 	restart_scall = in_syscall(regs) && syscall_restartable(regs);
 
-	if (get_signal(&ksig)) {
+	if (test_thread_flag(TIF_SIGPENDING) && get_signal(&ksig)) {
 		if (restart_scall) {
 			arc_restart_syscall(&ksig.ka, regs);
 			syscall_wont_restart(regs);	/* No more restarts */



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  parent reply	other threads:[~2023-01-03  8:16 UTC|newest]

Thread overview: 82+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-03  8:13 [PATCH 5.10 00/63] 5.10.162-rc1 review Greg Kroah-Hartman
2023-01-03  8:13 ` [PATCH 5.10 01/63] kernel: provide create_io_thread() helper Greg Kroah-Hartman
2023-01-03  8:13 ` [PATCH 5.10 02/63] iov_iter: add helper to save iov_iter state Greg Kroah-Hartman
2023-01-03  8:13 ` [PATCH 5.10 03/63] saner calling conventions for unlazy_child() Greg Kroah-Hartman
2023-01-03  8:13 ` [PATCH 5.10 04/63] fs: add support for LOOKUP_CACHED Greg Kroah-Hartman
2023-01-03  8:13 ` [PATCH 5.10 05/63] fix handling of nd->depth on LOOKUP_CACHED failures in try_to_unlazy* Greg Kroah-Hartman
2023-01-03  8:13 ` [PATCH 5.10 06/63] Make sure nd->path.mnt and nd->path.dentry are always valid pointers Greg Kroah-Hartman
2023-01-03  8:13 ` [PATCH 5.10 07/63] fs: expose LOOKUP_CACHED through openat2() RESOLVE_CACHED Greg Kroah-Hartman
2023-01-03  8:13 ` [PATCH 5.10 08/63] tools headers UAPI: Sync openat2.h with the kernel sources Greg Kroah-Hartman
2023-01-03  8:13 ` [PATCH 5.10 09/63] net: provide __sys_shutdown_sock() that takes a socket Greg Kroah-Hartman
2023-01-03  8:13 ` [PATCH 5.10 10/63] net: add accept helper not installing fd Greg Kroah-Hartman
2023-01-03  8:13 ` [PATCH 5.10 11/63] signal: Add task_sigpending() helper Greg Kroah-Hartman
2023-01-03  8:13 ` [PATCH 5.10 12/63] fs: make do_renameat2() take struct filename Greg Kroah-Hartman
2023-01-03  8:13 ` [PATCH 5.10 13/63] file: Rename __close_fd_get_file close_fd_get_file Greg Kroah-Hartman
2023-01-03  8:13 ` [PATCH 5.10 14/63] fs: provide locked helper variant of close_fd_get_file() Greg Kroah-Hartman
2023-01-03  8:13 ` [PATCH 5.10 15/63] entry: Add support for TIF_NOTIFY_SIGNAL Greg Kroah-Hartman
2023-01-03  8:13 ` [PATCH 5.10 16/63] task_work: Use TIF_NOTIFY_SIGNAL if available Greg Kroah-Hartman
2023-01-03  8:13 ` [PATCH 5.10 17/63] x86: Wire up TIF_NOTIFY_SIGNAL Greg Kroah-Hartman
2023-01-03  8:13 ` Greg Kroah-Hartman [this message]
2023-01-03  8:13   ` [PATCH 5.10 18/63] arc: add support for TIF_NOTIFY_SIGNAL Greg Kroah-Hartman
2023-01-03  8:13 ` [PATCH 5.10 19/63] arm64: " Greg Kroah-Hartman
2023-01-03  8:13   ` Greg Kroah-Hartman
2023-01-03  8:13 ` [PATCH 5.10 20/63] m68k: " Greg Kroah-Hartman
2023-01-03  8:13 ` [PATCH 5.10 21/63] nios32: " Greg Kroah-Hartman
2023-01-03  8:13 ` [PATCH 5.10 22/63] parisc: " Greg Kroah-Hartman
2023-01-03  8:13 ` [PATCH 5.10 23/63] powerpc: " Greg Kroah-Hartman
2023-01-03  8:13   ` Greg Kroah-Hartman
2023-01-03  8:13 ` [PATCH 5.10 24/63] mips: " Greg Kroah-Hartman
2023-01-03  8:13 ` [PATCH 5.10 25/63] s390: " Greg Kroah-Hartman
2023-01-03  8:13 ` [PATCH 5.10 26/63] um: " Greg Kroah-Hartman
2023-01-03  8:13   ` Greg Kroah-Hartman
2023-01-03  8:13 ` [PATCH 5.10 27/63] sh: " Greg Kroah-Hartman
2023-01-03  8:13 ` [PATCH 5.10 28/63] openrisc: " Greg Kroah-Hartman
2023-01-03  8:13   ` Greg Kroah-Hartman
2023-01-03  8:13 ` [PATCH 5.10 29/63] csky: " Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 30/63] hexagon: " Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 31/63] microblaze: " Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 32/63] arm: " Greg Kroah-Hartman
2023-01-03  8:14   ` Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 33/63] xtensa: " Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 34/63] alpha: " Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 35/63] c6x: " Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 36/63] h8300: " Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 37/63] ia64: " Greg Kroah-Hartman
2023-01-03  8:14   ` Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 38/63] nds32: " Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 39/63] riscv: " Greg Kroah-Hartman
2023-01-03  8:14   ` Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 40/63] sparc: " Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 41/63] ia64: dont call handle_signal() unless theres actually a signal queued Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 42/63] ARC: unbork 5.11 bootup: fix snafu in _TIF_NOTIFY_SIGNAL handling Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 43/63] alpha: fix TIF_NOTIFY_SIGNAL handling Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 44/63] task_work: remove legacy TWA_SIGNAL path Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 45/63] kernel: remove checking for TIF_NOTIFY_SIGNAL Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 46/63] coredump: Limit what can interrupt coredumps Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 47/63] kernel: allow fork with TIF_NOTIFY_SIGNAL pending Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 48/63] entry/kvm: Exit to user mode when TIF_NOTIFY_SIGNAL is set Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 49/63] arch: setup PF_IO_WORKER threads like PF_KTHREAD Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 50/63] arch: ensure parisc/powerpc handle PF_IO_WORKER in copy_thread() Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 51/63] x86/process: setup io_threads more like normal user space threads Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 52/63] kernel: stop masking signals in create_io_thread() Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 53/63] kernel: dont call do_exit() for PF_IO_WORKER threads Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 54/63] task_work: add helper for more targeted task_work canceling Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 55/63] io_uring: import 5.15-stable io_uring Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 56/63] signal: kill JOBCTL_TASK_WORK Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 57/63] task_work: unconditionally run task_work from get_signal() Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 58/63] net: remove cmsg restriction from io_uring based send/recvmsg calls Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 59/63] Revert "proc: dont allow async path resolution of /proc/thread-self components" Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 60/63] Revert "proc: dont allow async path resolution of /proc/self components" Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 61/63] eventpoll: add EPOLL_URING_WAKE poll wakeup flag Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 62/63] eventfd: provide a eventfd_signal_mask() helper Greg Kroah-Hartman
2023-01-03  8:14 ` [PATCH 5.10 63/63] io_uring: pass in EPOLL_URING_WAKE for eventfd signaling and wakeups Greg Kroah-Hartman
2023-01-03 13:44 ` [PATCH 5.10 00/63] 5.10.162-rc1 review Pavel Machek
2023-01-03 14:51 ` Guenter Roeck
2023-01-03 15:32 ` Jon Hunter
2023-01-03 16:16 ` Joel Fernandes
2023-01-04  5:29   ` Greg Kroah-Hartman
2023-01-04 21:56     ` Joel Fernandes
2023-01-05 11:43       ` Greg Kroah-Hartman
2023-01-03 18:16 ` Naresh Kamboju
2023-01-03 18:27 ` Florian Fainelli
2023-01-03 18:59 ` Allen Pais

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