linux-kernel - Re: [PATCH 2/2] drivers/perf: apple

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Message-ID: <ZB2tAqs/o/QSI4XD@FVFF77S0Q05N>
Date:   Fri, 24 Mar 2023 14:00:34 +0000
From:   Mark Rutland <mark.rutland@....com>
To:     Janne Grunau <j@...nau.net>, Will Deacon <will@...nel.org>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        asahi@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] drivers/perf: apple_m1: Add Apple M2 support

On Tue, Feb 14, 2023 at 11:38:02AM +0100, Janne Grunau wrote:
> The PMU itself is compatible with the one found on M1. We still know
> next to nothing about the counters so keep using CPU uarch specific
> compatibles/PMU names.
> 
> Signed-off-by: Janne Grunau <j@...nau.net>

Acked-by: Mark Rutland <mark.rutland@....com.

Will, I assume that you'll pick this up.

> ---
>  drivers/perf/apple_m1_cpu_pmu.c | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
> 
> diff --git a/drivers/perf/apple_m1_cpu_pmu.c b/drivers/perf/apple_m1_cpu_pmu.c
> index 979a7c2b4f56..83b74c7fe63f 100644
> --- a/drivers/perf/apple_m1_cpu_pmu.c
> +++ b/drivers/perf/apple_m1_cpu_pmu.c
> @@ -559,7 +559,21 @@ static int m1_pmu_fire_init(struct arm_pmu *cpu_pmu)
>  	return m1_pmu_init(cpu_pmu);
>  }
>  
> +static int m2_pmu_avalanche_init(struct arm_pmu *cpu_pmu)
> +{
> +	cpu_pmu->name = "apple_avalanche_pmu";
> +	return m1_pmu_init(cpu_pmu);
> +}
> +
> +static int m2_pmu_blizzard_init(struct arm_pmu *cpu_pmu)
> +{
> +	cpu_pmu->name = "apple_blizzard_pmu";
> +	return m1_pmu_init(cpu_pmu);
> +}
> +
>  static const struct of_device_id m1_pmu_of_device_ids[] = {
> +	{ .compatible = "apple,avalanche-pmu",	.data = m2_pmu_avalanche_init, },
> +	{ .compatible = "apple,blizzard-pmu",	.data = m2_pmu_blizzard_init, },
>  	{ .compatible = "apple,icestorm-pmu",	.data = m1_pmu_ice_init, },
>  	{ .compatible = "apple,firestorm-pmu",	.data = m1_pmu_fire_init, },
>  	{ },
> 
> -- 
> 2.39.1
>