hexagon: add support for TIF_NOTIFY_SIGNAL

Wire up TIF_NOTIFY_SIGNAL handling for hexagon. Cc: linux-hexagon@vger.kernel.org Acked-by: Brian Cain <bcain@codeaurora.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
mariux64 · Nov 9, 2020 · aeec819 · aeec819
1 parent f3924d7
commit aeec819
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diff --git a/arch/hexagon/include/asm/thread_info.h b/arch/hexagon/include/asm/thread_info.h
@@ -95,6 +95,7 @@ register struct thread_info *__current_thread_info asm(QUOTED_THREADINFO_REG);
 #define TIF_NEED_RESCHED        3       /* rescheduling necessary */
 #define TIF_SINGLESTEP          4       /* restore ss @ return to usr mode */
 #define TIF_RESTORE_SIGMASK     6       /* restore sig mask in do_signal() */
+#define TIF_NOTIFY_SIGNAL	7       /* signal notifications exist */
 /* true if poll_idle() is polling TIF_NEED_RESCHED */
 #define TIF_MEMDIE              17      /* OOM killer killed process */
 
@@ -103,6 +104,7 @@ register struct thread_info *__current_thread_info asm(QUOTED_THREADINFO_REG);
 #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)
 
 /* work to do on interrupt/exception return - All but TIF_SYSCALL_TRACE */
 #define _TIF_WORK_MASK          (0x0000FFFF & ~_TIF_SYSCALL_TRACE)

diff --git a/arch/hexagon/kernel/process.c b/arch/hexagon/kernel/process.c
@@ -174,7 +174,7 @@ int do_work_pending(struct pt_regs *regs, u32 thread_info_flags)
 		return 1;
 	}
 
-	if (thread_info_flags & _TIF_SIGPENDING) {
+	if (thread_info_flags & (_TIF_SIGPENDING | _TIF_NOTIFY_SIGNAL)) {
 		do_signal(regs);
 		return 1;
 	}