Blackfin: add support for TIF_NOTIFY_RESUME

[net-next-2.6.git] / arch / blackfin / kernel / signal.c

diff --git a/arch/blackfin/kernel/signal.c b/arch/blackfin/kernel/signal.c
index 9d90c18fab23d1544e73659b96bb3cbd977139f6..e0fd63e9e38abdd469ece8f6203bec7b423f350c 100644 (file)
--- a/arch/blackfin/kernel/signal.c
+++ b/arch/blackfin/kernel/signal.c
@@ -12,6 +12,7 @@
 #include <linux/binfmts.h>
 #include <linux/freezer.h>
 #include <linux/uaccess.h>
+#include <linux/tracehook.h>
 
 #include <asm/cacheflush.h>
 #include <asm/ucontext.h>
@@ -332,3 +333,20 @@ asmlinkage void do_signal(struct pt_regs *regs)
                sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
        }
 }
+
+/*
+ * notification of userspace execution resumption
+ */
+asmlinkage void do_notify_resume(struct pt_regs *regs)
+{
+       if (test_thread_flag(TIF_SIGPENDING) || test_thread_flag(TIF_RESTORE_SIGMASK))
+               do_signal(regs);
+
+       if (test_thread_flag(TIF_NOTIFY_RESUME)) {
+               clear_thread_flag(TIF_NOTIFY_RESUME);
+               tracehook_notify_resume(regs);
+               if (current->replacement_session_keyring)
+                       key_replace_session_keyring();
+       }
+}
+