riscv: add support for TIF_NOTIFY_SIGNAL

Wire up TIF_NOTIFY_SIGNAL handling for riscv.

Cc: linux-riscv@lists.infradead.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/arch/riscv/include/asm/thread_info.h b/arch/riscv/include/asm/thread_info.h
index a390711..97bf5a1 100644 (file)
--- a/arch/riscv/include/asm/thread_info.h
+++ b/arch/riscv/include/asm/thread_info.h
@@ -74,6 +74,7 @@ struct thread_info {
 #define TIF_SYSCALL_TRACEPOINT  6       /* syscall tracepoint instrumentation */
 #define TIF_SYSCALL_AUDIT      7       /* syscall auditing */
 #define TIF_SECCOMP            8       /* syscall secure computing */
+#define TIF_NOTIFY_SIGNAL      9       /* signal notifications exist */
 
 #define _TIF_SYSCALL_TRACE     (1 << TIF_SYSCALL_TRACE)
 #define _TIF_NOTIFY_RESUME     (1 << TIF_NOTIFY_RESUME)
@@ -82,9 +83,11 @@ struct thread_info {
 #define _TIF_SYSCALL_TRACEPOINT        (1 << TIF_SYSCALL_TRACEPOINT)
 #define _TIF_SYSCALL_AUDIT     (1 << TIF_SYSCALL_AUDIT)
 #define _TIF_SECCOMP           (1 << TIF_SECCOMP)
+#define _TIF_NOTIFY_SIGNAL     (1 << TIF_NOTIFY_SIGNAL)
 
 #define _TIF_WORK_MASK \
-       (_TIF_NOTIFY_RESUME | _TIF_SIGPENDING | _TIF_NEED_RESCHED)
+       (_TIF_NOTIFY_RESUME | _TIF_SIGPENDING | _TIF_NEED_RESCHED | \
+        _TIF_NOTIFY_SIGNAL)
 
 #define _TIF_SYSCALL_WORK \
        (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_TRACEPOINT | _TIF_SYSCALL_AUDIT | \

diff --git a/arch/riscv/kernel/signal.c b/arch/riscv/kernel/signal.c
index bc68418..469aef8 100644 (file)
--- a/arch/riscv/kernel/signal.c
+++ b/arch/riscv/kernel/signal.c
@@ -310,7 +310,7 @@ asmlinkage __visible void do_notify_resume(struct pt_regs *regs,
                                           unsigned long thread_info_flags)
 {
        /* Handle pending signal delivery */
-       if (thread_info_flags & _TIF_SIGPENDING)
+       if (thread_info_flags & (_TIF_SIGPENDING | _TIF_NOTIFY_SIGNAL))
                do_signal(regs);
 
        if (thread_info_flags & _TIF_NOTIFY_RESUME)