linux-kernel - Re: [PATCH 2/3] perf/dwc_pcie: Load DesignWare PCIe PMU driver automatically on Ampere SoCs

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Message-ID: <41a0090c-5c2f-42d3-b8a2-92ec094fab96@linux.alibaba.com>
Date: Wed, 9 Oct 2024 09:42:47 +0800
From: Shuai Xue <xueshuai@...ux.alibaba.com>
To: Ilkka Koskinen <ilkka@...amperecomputing.com>,
 Jing Zhang <renyu.zj@...ux.alibaba.com>, Will Deacon <will@...nel.org>
Cc: Mark Rutland <mark.rutland@....com>,
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] perf/dwc_pcie: Load DesignWare PCIe PMU driver
 automatically on Ampere SoCs



在 2024/10/9 07:18, Ilkka Koskinen 写道:
> Load DesignWare PCIe PMU driver automatically if the system has a PCI
> bridge by Ampere.
> 
> Signed-off-by: Ilkka Koskinen <ilkka@...amperecomputing.com>
> ---
>   drivers/perf/dwc_pcie_pmu.c | 10 ++++++++++
>   1 file changed, 10 insertions(+)
> 
> diff --git a/drivers/perf/dwc_pcie_pmu.c b/drivers/perf/dwc_pcie_pmu.c
> index 3581d916d851..d752168733cf 100644
> --- a/drivers/perf/dwc_pcie_pmu.c
> +++ b/drivers/perf/dwc_pcie_pmu.c
> @@ -782,6 +782,16 @@ static void __exit dwc_pcie_pmu_exit(void)
>   module_init(dwc_pcie_pmu_init);
>   module_exit(dwc_pcie_pmu_exit);
>   
> +static const struct pci_device_id dwc_pcie_pmu_table[] = {
> +	{
> +		PCI_DEVICE(PCI_VENDOR_ID_AMPERE, PCI_ANY_ID),

Hi, Ilkka,

Does all Ampere PCI bridge use this IP?

Best Regards,
Shuai