ia64: add support for TIF_NOTIFY_SIGNAL

Wire up TIF_NOTIFY_SIGNAL handling for ia64.

Cc: linux-ia64@vger.kernel.org
[axboe: added fixes from Mike Rapoport <rppt@kernel.org>]
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/arch/ia64/include/asm/thread_info.h b/arch/ia64/include/asm/thread_info.h
index 64a1011..51d20cb 100644 (file)
--- a/arch/ia64/include/asm/thread_info.h
+++ b/arch/ia64/include/asm/thread_info.h
@@ -103,6 +103,7 @@ struct thread_info {
 #define TIF_SYSCALL_TRACE      2       /* syscall trace active */
 #define TIF_SYSCALL_AUDIT      3       /* syscall auditing active */
 #define TIF_SINGLESTEP         4       /* restore singlestep on return to user mode */
+#define TIF_NOTIFY_SIGNAL      5       /* signal notification exist */
 #define TIF_NOTIFY_RESUME      6       /* resumption notification requested */
 #define TIF_MEMDIE             17      /* is terminating due to OOM killer */
 #define TIF_MCA_INIT           18      /* this task is processing MCA or INIT */
@@ -115,6 +116,7 @@ struct thread_info {
 #define _TIF_SINGLESTEP                (1 << TIF_SINGLESTEP)
 #define _TIF_SYSCALL_TRACEAUDIT        (_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SINGLESTEP)
 #define _TIF_NOTIFY_RESUME     (1 << TIF_NOTIFY_RESUME)
+#define _TIF_NOTIFY_SIGNAL     (1 << TIF_NOTIFY_SIGNAL)
 #define _TIF_SIGPENDING                (1 << TIF_SIGPENDING)
 #define _TIF_NEED_RESCHED      (1 << TIF_NEED_RESCHED)
 #define _TIF_MCA_INIT          (1 << TIF_MCA_INIT)
@@ -124,7 +126,7 @@ struct thread_info {
 
 /* "work to do on user-return" bits */
 #define TIF_ALLWORK_MASK       (_TIF_SIGPENDING|_TIF_NOTIFY_RESUME|_TIF_SYSCALL_AUDIT|\
-                                _TIF_NEED_RESCHED|_TIF_SYSCALL_TRACE)
+                                _TIF_NEED_RESCHED|_TIF_SYSCALL_TRACE|_TIF_NOTIFY_SIGNAL)
 /* like TIF_ALLWORK_BITS but sans TIF_SYSCALL_TRACE or TIF_SYSCALL_AUDIT */
 #define TIF_WORK_MASK          (TIF_ALLWORK_MASK&~(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT))
 

diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c
index 6b61a70..8d4e1ca 100644 (file)
--- a/arch/ia64/kernel/process.c
+++ b/arch/ia64/kernel/process.c
@@ -171,7 +171,8 @@ do_notify_resume_user(sigset_t *unused, struct sigscratch *scr, long in_syscall)
        }
 
        /* deal with pending signal delivery */
-       if (test_thread_flag(TIF_SIGPENDING)) {
+       if (test_thread_flag(TIF_SIGPENDING) ||
+           test_thread_flag(TIF_NOTIFY_SIGNAL)) {
                local_irq_enable();     /* force interrupt enable */
                ia64_do_signal(scr, in_syscall);
        }