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Subject[PATCH 11/79] [PATCH] always enable irqs when entering idle
Date
From: Glauber Costa <gcosta@redhat.com>

This matches x86_64 behaviour, which is a superior one IMHO

Signed-off-by: Glauber Costa <gcosta@redhat.com>
---
arch/x86/kernel/process_32.c | 9 +++++++--
1 files changed, 7 insertions(+), 2 deletions(-)

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 */
--
1.5.0.6


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