From: Michal Simek <monstr@monstr.eu>
Date: Thu, 10 Jun 2010 14:02:32 +0000 (+0200)
Subject: microblaze: Do not trace cpu_relax function
X-Git-Tag: v2.6.36-rc1~560^2~36
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=d0f140e03e38dc553a0bb61611c15fcede671f23;p=karo-tx-linux.git

microblaze: Do not trace cpu_relax function

IRQsoff tracer requires to protect cpu_idle function
to get correct timing report.

Signed-off-by: Michal Simek <monstr@monstr.eu>
---

diff --git a/arch/microblaze/kernel/process.c b/arch/microblaze/kernel/process.c
index 09bed44dfcd3..ba7c4b16ed35 100644
--- a/arch/microblaze/kernel/process.c
+++ b/arch/microblaze/kernel/process.c
@@ -76,8 +76,11 @@ __setup("hlt", hlt_setup);
 void default_idle(void)
 {
 	if (likely(hlt_counter)) {
-		while (!need_resched())
-			cpu_relax();
+		local_irq_disable();
+		stop_critical_timings();
+		cpu_relax();
+		start_critical_timings();
+		local_irq_enable();
 	} else {
 		clear_thread_flag(TIF_POLLING_NRFLAG);
 		smp_mb__after_clear_bit();