From: Jens Axboe <axboe@kernel.dk>
To: Ley Foon Tan <ley.foon.tan@intel.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: [PATCH] nios32: add support for TIF_NOTIFY_SIGNAL
Date: Thu, 29 Oct 2020 10:18:15 -0600 [thread overview]
Message-ID: <c6e927af-7ffd-d087-8716-729e87d80fb1@kernel.dk> (raw)
Wire up TIF_NOTIFY_SIGNAL handling for nios32.
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
5.11 has support queued up for TIF_NOTIFY_SIGNAL, see this posting
for details:
https://lore.kernel.org/io-uring/20201026203230.386348-1-axboe@kernel.dk/
As part of that work, I'm adding TIF_NOTIFY_SIGNAL support to all archs,
as that will enable a set of cleanups once all of them support it. I'm
happy carrying this patch if need be, or it can be funelled through the
arch tree. Let me know.
arch/nios2/include/asm/thread_info.h | 2 ++
arch/nios2/kernel/signal.c | 3 ++-
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/arch/nios2/include/asm/thread_info.h b/arch/nios2/include/asm/thread_info.h
index 7349a4fa635b..272d2c72a727 100644
--- a/arch/nios2/include/asm/thread_info.h
+++ b/arch/nios2/include/asm/thread_info.h
@@ -86,6 +86,7 @@ static inline struct thread_info *current_thread_info(void)
#define TIF_MEMDIE 4 /* is terminating due to OOM killer */
#define TIF_SECCOMP 5 /* secure computing */
#define TIF_SYSCALL_AUDIT 6 /* syscall auditing active */
+#define TIF_NOTIFY_SIGNAL 7 /* signal notifications exist */
#define TIF_RESTORE_SIGMASK 9 /* restore signal mask in do_signal() */
#define TIF_POLLING_NRFLAG 16 /* true if poll_idle() is polling
@@ -97,6 +98,7 @@ static inline struct thread_info *current_thread_info(void)
#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED)
#define _TIF_SECCOMP (1 << TIF_SECCOMP)
#define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT)
+#define _TIF_NOTIFY_SIGNAL (1 << TIF_NOTIFY_SIGNAL)
#define _TIF_RESTORE_SIGMASK (1 << TIF_RESTORE_SIGMASK)
#define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG)
diff --git a/arch/nios2/kernel/signal.c b/arch/nios2/kernel/signal.c
index cf2dca2ac7c3..2009ae2d3c3b 100644
--- a/arch/nios2/kernel/signal.c
+++ b/arch/nios2/kernel/signal.c
@@ -306,7 +306,8 @@ asmlinkage int do_notify_resume(struct pt_regs *regs)
if (!user_mode(regs))
return 0;
- if (test_thread_flag(TIF_SIGPENDING)) {
+ if (test_thread_flag(TIF_SIGPENDING) ||
+ test_thread_flag(TIF_NOTIFY_SIGNAL)) {
int restart = do_signal(regs);
if (unlikely(restart)) {
--
2.29.0
--
Jens Axboe
next reply other threads:[~2020-10-29 16:18 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-29 16:18 Jens Axboe [this message]
2020-10-30 0:27 ` [PATCH] nios32: add support for TIF_NOTIFY_SIGNAL Tan, Ley Foon
2020-10-30 2:34 ` Jens Axboe
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