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From 6a218fa1de203250245064236bc3cac1ad7606a9 Mon Sep 17 00:00:00 2001
From: Wu Zhangjin <wuzhangjin@gmail.com>
Date: Wed, 10 Mar 2010 01:53:58 +0800
Subject: [PATCH] RT: MIPS: check resched in do_signal()
commit aa60f24bac7c129cfc97e25319669d1a5c95400c in tip.
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
---
arch/mips/kernel/signal.c | 8 ++++++++
1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/arch/mips/kernel/signal.c b/arch/mips/kernel/signal.c
index 2099d5a..24157c2 100644
--- a/arch/mips/kernel/signal.c
+++ b/arch/mips/kernel/signal.c
@@ -592,6 +592,14 @@ static void do_signal(struct pt_regs *regs)
siginfo_t info;
int signr;
+#ifdef CONFIG_PREEMPT_RT
+ /*
+ * Fully-preemptible kernel does not need interrupts disabled
+ */
+ local_irq_enable();
+ preempt_check_resched();
+#endif
+
/*
* We want the common case to go fast, which is why we may in certain
* cases get here from kernel mode. Just return without doing anything
--
1.7.0.4
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