From: Glauber de Oliveira Costa <gcosta@redhat.com>
Date: Wed, 19 Mar 2008 17:25:06 +0000 (-0300)
Subject: x86: always enable irqs when entering idle
X-Git-Tag: v3.12-rc1~22029^2~391
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3b22ec7b13cb31e0d87fbc0aabe14caaaad309e8;p=kernel%2Fkernel-generic.git

x86: always enable irqs when entering idle

This matches x86_64 behaviour, which is a superior one IMHO

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c
index ec05fb7..08c41ed 100644
--- a/arch/x86/kernel/process_32.c
+++ b/arch/x86/kernel/process_32.c
@@ -127,6 +127,7 @@ void default_idle(void)
 		local_irq_enable();
 		current_thread_info()->status |= TS_POLLING;
 	} else {
+		local_irq_enable();
 		/* loop is done by the caller */
 		cpu_relax();
 	}
@@ -142,6 +143,7 @@ EXPORT_SYMBOL(default_idle);
  */
 static void poll_idle(void)
 {
+	local_irq_enable();
 	cpu_relax();
 }
 
@@ -248,8 +250,11 @@ void mwait_idle_with_hints(unsigned long ax, unsigned long cx)
 		__monitor((void *)&current_thread_info()->flags, 0, 0);
 		smp_mb();
 		if (!need_resched())
-			__mwait(ax, cx);
-	}
+			__sti_mwait(ax, cx);
+		else
+			local_irq_enable();
+	} else
+		local_irq_enable();
 }
 
 /* Default MONITOR/MWAIT with no hints, used for default C1 state */