Re: [PATCH 9/9] clocksource: new RISC-V SBI timer driver

From: Christoph Hellwig
Date: Fri Jul 27 2018 - 10:37:58 EST


On Thu, Jul 26, 2018 at 11:51:56AM -0700, Atish Patra wrote:
> Should we follow the same prefix for these functions?
> either timer_riscv* or riscv_timer* ?
>
> Apologies for overlooking this in my timer patch as well.

riscv_timer_* sounds saner to me, I can update that.

>> + struct clock_event_device *evdev = this_cpu_ptr(&riscv_clock_event);
>> +
>
> The comment about the purpose of clearing the interrupt in the original
> patch is removed here. If that's intentional, it's fine.
>
> I thought having that comment helps understanding the distinction between
> clearing the timer interrupt in SBI call & here.

Yes, that was intentional. But given that I don't even understand why
not using an ABI for architectural interrupt source enable/disable maybe
I'm confused and should revisit that decision.