Re: [PATCH v2 26/30] dmaengine: idxd: Assign parent for event_source device

[Dave Jiang]

On 4/12/24 9:10 AM, Jonathan Cameron wrote:
> Currently the PMU device appears directly under /sys/devices/
> Only root busses should appear there, so instead assign the pmu->dev
> parent to be the iDXD PCI Device.
> 
> Link: https://lore.kernel.org/linux-cxl/ZCLI9A40PJsyqAmq@xxxxxxxxx/
> Cc: Fenghua Yu <fenghua.yu@xxxxxxxxx>
> Cc: Dave Jiang <dave.jiang@xxxxxxxxx>
> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>

Reviewed-by: Dave Jiang <dave.jiang@xxxxxxxxx>
> ---
>  drivers/dma/idxd/perfmon.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/dma/idxd/perfmon.c b/drivers/dma/idxd/perfmon.c
> index fdda6d604262..fbb586eed0b3 100644
> --- a/drivers/dma/idxd/perfmon.c
> +++ b/drivers/dma/idxd/perfmon.c
> @@ -477,6 +477,7 @@ static void idxd_pmu_init(struct idxd_pmu *idxd_pmu)
>  	}
>  
>  	idxd_pmu->pmu.name		= idxd_pmu->name;
> +	idxd_pmu->pmu.parent		= &idxd_pmu->idxd->pdev->dev;
>  	idxd_pmu->pmu.attr_groups	= perfmon_attr_groups;
>  	idxd_pmu->pmu.task_ctx_nr	= perf_invalid_context;
>  	idxd_pmu->pmu.event_init	= perfmon_pmu_event_init;