Hi All,
Anybody help me review this?
Thanks,
LiWang.
On 08/14/2013 10:20 AM, Li Wang wrote:
When cpuidle_idle_call() return 0, it shows that linux system is using
idle framwork driver. Now, local irq has already been enabled in
cpuidle_idle_call(). So, it need not enable local irq again, when return 0.
The code is introduced by commit:
97a5b81fa4d3a11dcdf224befc577f2e0abadc0b ("x86: Fix idle consolidation fallout")
In that defect, it does not use idle framework driver, just call
amd_e400_idle().
That problem is that amd_e400_idle() does not enable irq.
Signed-off-by: Li Wang <li.w...@windriver.com>
---
arch/x86/kernel/process.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 83369e5..cb55ee4 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -300,8 +300,6 @@ void arch_cpu_idle(void)
{
if (cpuidle_idle_call())
x86_idle();
- else
- local_irq_enable();
}
/*
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
