From: Jens Axboe Date: Fri, 9 Oct 2020 21:47:28 +0000 (-0600) Subject: um: add support for TIF_NOTIFY_SIGNAL X-Git-Tag: v5.15~2165^2~19 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a5b3cd32ff238b87e94d47b927aff117e22d13c0;p=platform%2Fkernel%2Flinux-starfive.git um: add support for TIF_NOTIFY_SIGNAL Wire up TIF_NOTIFY_SIGNAL handling for um. Cc: linux-um@lists.infradead.org Acked-By: Anton Ivanov Signed-off-by: Jens Axboe --- diff --git a/arch/um/include/asm/thread_info.h b/arch/um/include/asm/thread_info.h index 4c19ce4..3b1cb8b 100644 --- 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 *current_thread_info(void) #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 @@ -67,6 +68,7 @@ static inline struct thread_info *current_thread_info(void) #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) diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c index 3bed095..9e19da9 100644 --- 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);