* [PATCH 5.10 26/63] um: add support for TIF_NOTIFY_SIGNAL
[not found] <20230103081308.548338576@linuxfoundation.org>
@ 2023-01-03 8:13 ` Greg Kroah-Hartman
0 siblings, 0 replies; only message in thread
From: Greg Kroah-Hartman @ 2023-01-03 8:13 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, linux-um, Anton Ivanov, Jens Axboe
From: Jens Axboe <axboe@kernel.dk>
[ Upstream commit a5b3cd32ff238b87e94d47b927aff117e22d13c0 ]
Wire up TIF_NOTIFY_SIGNAL handling for um.
Cc: linux-um@lists.infradead.org
Acked-By: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/um/include/asm/thread_info.h | 2 ++
arch/um/kernel/process.c | 3 ++-
2 files changed, 4 insertions(+), 1 deletion(-)
--- a/arch/um/include/asm/thread_info.h
+++ b/arch/um/include/asm/thread_info.h
@@ -57,6 +57,7 @@ static inline struct thread_info *curren
#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
#define TIF_SIGPENDING 1 /* signal pending */
#define TIF_NEED_RESCHED 2 /* rescheduling necessary */
+#define TIF_NOTIFY_SIGNAL 3 /* signal notifications exist */
#define TIF_RESTART_BLOCK 4
#define TIF_MEMDIE 5 /* is terminating due to OOM killer */
#define TIF_SYSCALL_AUDIT 6
@@ -68,6 +69,7 @@ static inline struct thread_info *curren
#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
#define _TIF_SIGPENDING (1 << TIF_SIGPENDING)
#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED)
+#define _TIF_NOTIFY_SIGNAL (1 << TIF_NOTIFY_SIGNAL)
#define _TIF_MEMDIE (1 << TIF_MEMDIE)
#define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT)
#define _TIF_SECCOMP (1 << TIF_SECCOMP)
--- a/arch/um/kernel/process.c
+++ b/arch/um/kernel/process.c
@@ -99,7 +99,8 @@ void interrupt_end(void)
if (need_resched())
schedule();
- if (test_thread_flag(TIF_SIGPENDING))
+ if (test_thread_flag(TIF_SIGPENDING) ||
+ test_thread_flag(TIF_NOTIFY_SIGNAL))
do_signal(regs);
if (test_thread_flag(TIF_NOTIFY_RESUME))
tracehook_notify_resume(regs);
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2023-01-03 8:13 ` [PATCH 5.10 26/63] um: add support for TIF_NOTIFY_SIGNAL Greg Kroah-Hartman
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