From: Catalin Marinas <catalin.marinas@arm.com>
To: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: James Morse <james.morse@arm.com>,
Jayachandran Chandrasekharan Nair <jnair@marvell.com>,
Will Deacon <will.deacon@arm.com>,
linux-arm-kernel@lists.infradead.org,
Aaro Koskinen <aaro.koskinen@nokia.com>
Subject: Re: [PATCH v2 1/2] arm64: Improve parking of stopped CPUs
Date: Tue, 25 Jun 2019 16:43:22 +0100 [thread overview]
Message-ID: <20190625154322.GB53763@arrakis.emea.arm.com> (raw)
In-Reply-To: <20190617203519.328-1-aaro.koskinen@iki.fi>
On Mon, Jun 17, 2019 at 11:35:18PM +0300, Aaro Koskinen wrote:
> From: Jayachandran C <jnair@caviumnetworks.com>
>
> The current code puts the stopped cpus in an 'yield' instruction loop.
> Using a busy loop here is unnecessary, we can use the cpu_park_loop()
> function here to do a wfi/wfe.
>
> Signed-off-by: Jayachandran C <jnair@caviumnetworks.com>
> Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com>
> Acked-by: Will Deacon <will.deacon@arm.com>
Both patches queued for 5.3. Thanks.
--
Catalin
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prev parent reply other threads:[~2019-06-25 15:43 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-17 20:35 [PATCH v2 1/2] arm64: Improve parking of stopped CPUs Aaro Koskinen
2019-06-17 20:35 ` [PATCH v2 2/2] arm64: Implement panic_smp_self_stop() Aaro Koskinen
2019-06-18 12:51 ` Will Deacon
2019-06-25 15:43 ` Catalin Marinas [this message]
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