linux-kernel - Re: [patch V2 15/17] lib/vdso: Allow fixed clock mode

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Message-ID: <fe84110e-5953-15e8-74a7-a4c5cb19a8db@arm.com>
Date:   Mon, 17 Feb 2020 11:14:05 +0000
From:   Vincenzo Frascino <vincenzo.frascino@....com>
To:     Thomas Gleixner <tglx@...utronix.de>,
        LKML <linux-kernel@...r.kernel.org>
Cc:     x86@...nel.org, John Stultz <john.stultz@...aro.org>,
        Andy Lutomirski <luto@...nel.org>,
        Christophe Leroy <christophe.leroy@....fr>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Juergen Gross <jgross@...e.com>,
        Michael Kelley <mikelley@...rosoft.com>,
        Sasha Levin <sashal@...nel.org>,
        Ralf Baechle <ralf@...ux-mips.org>,
        Paul Burton <paulburton@...nel.org>,
        James Hogan <jhogan@...nel.org>,
        Russell King <linux@...linux.org.uk>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Marc Zyngier <maz@...nel.org>, Andrei Vagin <avagin@...il.com>
Subject: Re: [patch V2 15/17] lib/vdso: Allow fixed clock mode

On 07/02/2020 12:39, Thomas Gleixner wrote:
> From: Christophe Leroy <christophe.leroy@....fr>
> 
> Some architectures have a fixed clocksource which is known at compile time
> and cannot be replaced or disabled at runtime, e.g. timebase on
> PowerPC. For such cases the clock mode check in the VDSO code is pointless.
> 
> Move the check for a VDSO capable clocksource into an inline function and
> allow architectures to redefine it via a macro.
> 
> [ tglx: Removed the #ifdef mess ]
> 
> Signed-off-by: Christophe Leroy <christophe.leroy@....fr>
> Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
> 


Reviewed-by: Vincenzo Frascino <vincenzo.frascino@....com>
Tested-by: Vincenzo Frascino <vincenzo.frascino@....com>

[...]

-- 
Regards,
Vincenzo

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