linux-kernel - Re: [PATCH] ARM: Support arch_irq_work

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Date:	Mon, 28 Oct 2013 18:58:40 -0700
From:	Kevin Hilman <khilman@...aro.org>
To:	Stephen Boyd <sboyd@...eaurora.org>
Cc:	Russell King <linux@....linux.org.uk>,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Frederic Weisbecker <fweisbec@...il.com>
Subject: Re: [PATCH] ARM: Support arch_irq_work_raise() via self IPIs

Stephen Boyd <sboyd@...eaurora.org> writes:

> This will allow the scheduler tick to be restarted if we're in
> full NOHZ mode.
>
> Cc: Kevin Hilman <khilman@...aro.org>
> Cc: Frederic Weisbecker <fweisbec@...il.com>
> Signed-off-by: Stephen Boyd <sboyd@...eaurora.org>

Minor nit, but I'd prefer a more verbose changelog (I forget things
quickly and like to rely on changelogs for my memory.)  Probably worth
adding something like: "By default, irq_work is tied to the tick
processing (update_process_times()) but in full NOHZ mode, no tick means
no IRQ work.  In order for IRQ work to be done in full NOHZ mode, a
self-IPI is used to process IRQ work."

Other than the changelog nit, patch looks good, feel free to add

Reviewed-by: Kevin Hilman <khilman@...aro.org>

If Russell is OK with this, it can go to his patch system.

Kevin
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