From: Catalin Marinas <catalin.marinas@arm.com>
To: Rohit Khanna <rokhanna@nvidia.com>
Cc: "will.deacon@arm.com" <will.deacon@arm.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Thierry Reding <treding@nvidia.com>,
Alexander Van Brunt <avanbrunt@nvidia.com>,
Bo Yan <byan@nvidia.com>, Jason Sequeira <jsequeira@nvidia.com>,
Mark Rutland <mark.rutland@arm.com>,
Lorenzo Pieralisi <Lorenzo.Pieralisi@arm.com>
Subject: Re: [PATCH] arm64: skip cpu nodes marked as disabled in DT
Date: Thu, 26 Apr 2018 08:25:14 +0100 [thread overview]
Message-ID: <20180426072514.GA33476@MBP.local> (raw)
In-Reply-To: <1524699380207.85374@nvidia.com>
On Wed, Apr 25, 2018 at 11:36:06PM +0000, Rohit Khanna wrote:
> Adding few other folks.
It looks fine to me but cc'ing Mark and Lorenzo (and it should have been
posted on linux-arm-kernel@lists.infradead.org).
> From: Rohit Khanna
> Sent: Wednesday, April 25, 2018 4:08 PM
> To: catalin.marinas@arm.com; will.deacon@arm.com
> Cc: linux-kernel@vger.kernel.org; Rohit Khanna
> Subject: [PATCH] arm64: skip cpu nodes marked as disabled in DT
>
> Skip the CPU nodes that are marked as disabled in DT.
>
> Bug 1828570
>
> Signed-off-by: Rohit Khanna <rokhanna@nvidia.com>
> Reviewed-on: http://git-master/r/1245333
> Reviewed-by: Alexander Van Brunt <avanbrunt@nvidia.com>
> ---
> arch/arm64/kernel/smp.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c
> index f3e2e3aec0b0..2b4371b0948d 100644
> --- a/arch/arm64/kernel/smp.c
> +++ b/arch/arm64/kernel/smp.c
> @@ -578,6 +578,10 @@ static void __init of_parse_and_init_cpus(void)
> for_each_node_by_type(dn, "cpu") {
> u64 hwid = of_get_cpu_mpidr(dn);
>
> + /* Check to see if the cpu is disabled */
> + if (!of_device_is_available(dn))
> + goto next;
> +
> if (hwid == INVALID_HWID)
> goto next;
>
> --
> 2.1.4
next prev parent reply other threads:[~2018-04-26 7:24 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-25 23:08 [PATCH] arm64: skip cpu nodes marked as disabled in DT Rohit Khanna
2018-04-25 23:36 ` Rohit Khanna
2018-04-26 7:25 ` Catalin Marinas [this message]
2018-04-26 10:18 ` Lorenzo Pieralisi
2018-04-26 19:54 ` Rohit Khanna
2018-04-30 9:54 ` Lorenzo Pieralisi
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