From d1be2e485bfb5e3ee3ef5d2131f0151f9a3c4387 Mon Sep 17 00:00:00 2001
From: Barry Song <barry.song@analog.com>
Date: Tue, 8 Dec 2009 09:55:37 +0000
Subject: Blackfin: add support for TIF_NOTIFY_RESUME

Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
---
 arch/blackfin/kernel/signal.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'arch/blackfin/kernel/signal.c')

diff --git a/arch/blackfin/kernel/signal.c b/arch/blackfin/kernel/signal.c
index 9d90c18fab2..e0fd63e9e38 100644
--- 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();
+	}
+}
+
-- 
cgit v1.2.3-70-g09d2