Subject: [PATCH v4 14/15] ARM: local timers: convert MSM to runtime registration interface

From: [email-masked] (Marc Zyngier)
Date: Fri, 27 Jan 2012 17:12:24 +0000

On 27/01/12 16:08, Stephen Boyd wrote:
> On 01/20/12 04:04, Marc Zyngier wrote:
>> Convert the MSM timers to the runtime registration interface.
>>
>>
> 
> Acked-by: Stephen Boyd <[email-masked]>

Thanks Stephen.

>> Tested-by: David Brown <[email-masked]>
>> Acked-by: David Brown <[email-masked]>
>> Signed-off-by: Marc Zyngier <[email-masked]>
>> ---
>>  arch/arm/mach-msm/timer.c |   79 +++++++++++++++++++++++++--------------------
>>  1 files changed, 44 insertions(+), 35 deletions(-)
>>
>> diff --git a/arch/arm/mach-msm/timer.c b/arch/arm/mach-msm/timer.c
>> index 11d0d8f..75f4be4 100644
>> --- a/arch/arm/mach-msm/timer.c
>> +++ b/arch/arm/mach-msm/timer.c
>>
> [snip]
>> +
>> +static struct local_timer_ops msm_local_timer_ops __cpuinitdata = {
>> +	.setup	= msm_local_timer_setup,
>> +	.stop	= msm_local_timer_stop,
> 
> Would this be a good time to rename these to start/stop? setup sounds
> like it's done once, but its actually done every cpu up from what I recall.

I thought about that. But you could also argue that next_event() is also
a kind of start for the timer. Actually, if I was to change anything
about the naming, I'd turn stop to teardown.

And not changing the naming makes the patch series smaller and more
easily verified.

>> +};
>> +#endif /* CONFIG_LOCAL_TIMERS */
>> +
>>  static void __init msm_timer_init(void)
>>  {
>>  	struct clock_event_device *ce = &msm_clockevent;
>> @@ -173,8 +212,12 @@ static void __init msm_timer_init(void)
>>  		*__this_cpu_ptr(msm_evt.percpu_evt) = ce;
>>  		res = request_percpu_irq(ce->irq, msm_timer_interrupt,
>>  					 ce->name, msm_evt.percpu_evt);
>> -		if (!res)
>> +		if (!res) {
>>  			enable_percpu_irq(ce->irq, 0);
>> +#ifdef CONFIG_LOCAL_TIMERS
>> +			local_timer_register(&msm_local_timer_ops);
>> +#endif
>> +		}
> 
> It's unfortunate we can't avoid this ifdef here. O well.
> 

I tried. It's actually uglier without the ifdef...

	M.
-- 
Jazz is not dead. It just smells funny...