Re: [PATCH 1/9] ARM: get rid of arch_cpu_idle_prepare()

From: Daniel Lezcano
Date: Mon Jan 27 2014 - 12:12:58 EST


On 01/27/2014 05:07 PM, Russell King - ARM Linux wrote:
On Mon, Jan 27, 2014 at 09:22:55AM +0100, Daniel Lezcano wrote:
On 01/27/2014 07:08 AM, Nicolas Pitre wrote:
ARM and ARM64 are the only two architectures implementing
arch_cpu_idle_prepare() simply to call local_fiq_enable().

We have secondary_start_kernel() already calling local_fiq_enable() and
this is done a second time in arch_cpu_idle_prepare() in that case. And
enabling FIQs has nothing to do with idling the CPU to start with.

So let's introduce init_fiq_boot_cpu() to take care of FIQs on the boot
CPU and remove arch_cpu_idle_prepare(). This is now done a bit earlier
at late_initcall time but this shouldn't make a difference in practice
i.e. when FIQs are actually used.

Signed-off-by: Nicolas Pitre <nico@xxxxxxxxxx>

Reviewed-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>

What kind of review did you do when giving that attributation?

I did the review to the best of my knowledge and with good will.

I read your comment on this patch and I learnt one more thing.

Today, I am smarter than yesterday and dumber than tomorrow :)


-- Daniel


--
<http://www.linaro.org/> Linaro.org â Open source software for ARM SoCs

Follow Linaro: <http://www.facebook.com/pages/Linaro> Facebook |
<http://twitter.com/#!/linaroorg> Twitter |
<http://www.linaro.org/linaro-blog/> Blog

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/