microblaze: add support for TIF_NOTIFY_SIGNAL

Wire up TIF_NOTIFY_SIGNAL handling for microblaze.

Cc: Michal Simek <monstr@monstr.eu>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Link: https://lore.kernel.org/r/a2b78afc-5f60-8590-9df5-17302e356552@kernel.dk
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

diff --git a/arch/microblaze/include/asm/thread_info.h b/arch/microblaze/include/asm/thread_info.h
index ad8e8fcb90d3baea26ad95360ad422610f45210f..44f5ca33186259f4545fe13225e6d3f3eac6860c 100644 (file)
--- a/arch/microblaze/include/asm/thread_info.h
+++ b/arch/microblaze/include/asm/thread_info.h
@@ -107,6 +107,7 @@ static inline struct thread_info *current_thread_info(void)
 #define TIF_NEED_RESCHED       3 /* rescheduling necessary */
 /* restore singlestep on return to user mode */
 #define TIF_SINGLESTEP         4
+#define TIF_NOTIFY_SIGNAL      5       /* signal notifications exist */
 #define TIF_MEMDIE             6       /* is terminating due to OOM killer */
 #define TIF_SYSCALL_AUDIT      9       /* syscall auditing active */
 #define TIF_SECCOMP            10      /* secure computing */
@@ -119,6 +120,7 @@ static inline struct thread_info *current_thread_info(void)
 #define _TIF_SIGPENDING                (1 << TIF_SIGPENDING)
 #define _TIF_NEED_RESCHED      (1 << TIF_NEED_RESCHED)
 #define _TIF_SINGLESTEP                (1 << TIF_SINGLESTEP)
+#define _TIF_NOTIFY_SIGNAL     (1 << TIF_NOTIFY_SIGNAL)
 #define _TIF_POLLING_NRFLAG    (1 << TIF_POLLING_NRFLAG)
 #define _TIF_SYSCALL_AUDIT     (1 << TIF_SYSCALL_AUDIT)
 #define _TIF_SECCOMP           (1 << TIF_SECCOMP)

diff --git a/arch/microblaze/kernel/signal.c b/arch/microblaze/kernel/signal.c
index f11a0ccccabc47f155ee02e176eb1b47234e94a8..5a8d173d7b75c876bd3ea61890cb5322534060ab 100644 (file)
--- a/arch/microblaze/kernel/signal.c
+++ b/arch/microblaze/kernel/signal.c
@@ -313,7 +313,8 @@ static void do_signal(struct pt_regs *regs, int in_syscall)
 
 asmlinkage void do_notify_resume(struct pt_regs *regs, int in_syscall)
 {
-       if (test_thread_flag(TIF_SIGPENDING))
+       if (test_thread_flag(TIF_SIGPENDING) ||
+           test_thread_flag(TIF_NOTIFY_SIGNAL))
                do_signal(regs, in_syscall);
 
        if (test_thread_flag(TIF_NOTIFY_RESUME))