powerpc-Annotate-atomic_locks.patch

From 7bdf1ee7e9269dd936a69d23cefeb02930711442 Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 3 Jul 2009 08:44:51 -0500
Subject: [PATCH] powerpc: Annotate atomic_locks

commit 32ff9169c2f6c94c900f08217359972e2f3eb17f in tip.

[PG: All the original raw lock conversion is upstream; just these two
 chunks remain to be carried for RT.]

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>

diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index d069ff8..4f99a3a 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -202,6 +202,11 @@ void _exception(int signr, struct pt_regs *regs, int code, unsigned long addr)
 				addr, regs->nip, regs->link, code);
 		}
 
+#ifdef CONFIG_PREEMPT_RT
+	local_irq_enable();
+	preempt_check_resched();
+#endif
+
 	memset(&info, 0, sizeof(info));
 	info.si_signo = signr;
 	info.si_code = code;
diff --git a/arch/powerpc/mm/tlb_nohash.c b/arch/powerpc/mm/tlb_nohash.c
index 2fbc680..a65f1d0 100644
--- a/arch/powerpc/mm/tlb_nohash.c
+++ b/arch/powerpc/mm/tlb_nohash.c
@@ -274,7 +274,9 @@ void flush_tlb_kernel_range(unsigned long start, unsigned long end)
 	_tlbil_pid(0);
 	preempt_enable();
 #else
+	preempt_disable();
 	_tlbil_pid(0);
+	preempt_enable();
 #endif
 }
 EXPORT_SYMBOL(flush_tlb_kernel_range);
-- 
1.7.1.1