linux-kernel - Re: [PATCH v2 0/3] arm_arch_timer: VDSO preparation, code consolidation

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Message-ID: <20140922153919.GQ25809@arm.com>
Date:	Mon, 22 Sep 2014 16:39:19 +0100
From:	Will Deacon <will.deacon@....com>
To:	Nathan Lynch <nathan_lynch@...tor.com>
Cc:	Daniel Lezcano <daniel.lezcano@...aro.org>,
	Catalin Marinas <Catalin.Marinas@....com>,
	Christopher Covington <cov@...eaurora.org>,
	Doug Anderson <dianders@...omium.org>,
	Lorenzo Pieralisi <Lorenzo.Pieralisi@....com>,
	Marc Zyngier <Marc.Zyngier@....com>,
	Mark Rutland <Mark.Rutland@....com>,
	Russell King <linux@....linux.org.uk>,
	Sonny Rao <sonnyrao@...omium.org>,
	Stephen Boyd <sboyd@...eaurora.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 0/3] arm_arch_timer: VDSO preparation, code
 consolidation

On Thu, Sep 18, 2014 at 03:59:32PM +0100, Nathan Lynch wrote:
> This series contains the necessary changes to allow architected timer
> access from user-space on 32-bit ARM.  This allows the VDSO to support
> high resolution timestamps for clock_gettime and gettimeofday.  This
> also merges substantially similar code from arm and arm64 into the
> core arm_arch_timer driver.
> 
> The functional changes are:
> - When available, CNTVCT is made readable by user space on arm, as it
>   is on arm64.
> - The clocksource name becomes "arch_mem_counter" if CP15 access to
>   the counter is not available.
> 
> These changes have been carried as part of the ARM VDSO patch set over
> the last several months, but I am splitting them out here as I assume
> they should go through the clocksource maintainers.

For the series:

  Acked-by: Will Deacon <will.deacon@....com>

I'm not sure which tree the arch-timer stuff usually goes through, but
the arm/arm64 bits look fine so I'm happy for them to merged together.

Will
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