hexagon: add support for TIF_NOTIFY_SIGNAL

[ Upstream commit aeec8193578a71d0aee21218351849d38121ce90 ]

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/arch/hexagon/include/asm/thread_info.h b/arch/hexagon/include/asm/thread_info.h
index 563da198646455b2497da3a5f87f64b3023f3e4c..535976665bf0013ba067a4599b83cce87d72d9ca 100644 (file)
--- 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
index 67767c5ed98c3a14ab4813614416ca3f731fc96a..6a980cba7b294ce709c5b7e971a065c0d451b7b2 100644 (file)
--- 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;
        }