linux-kernel - RE: [PATCH v7 1/4] hisi_acc_vfio_pci: extract public functions for container

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Message-ID: <342ae840f5064d92b569b521b30ddae8@huawei.com>
Date: Mon, 5 Aug 2024 09:11:01 +0000
From: Shameerali Kolothum Thodi <shameerali.kolothum.thodi@...wei.com>
To: liulongfang <liulongfang@...wei.com>, "alex.williamson@...hat.com"
	<alex.williamson@...hat.com>, "jgg@...dia.com" <jgg@...dia.com>, "Jonathan
 Cameron" <jonathan.cameron@...wei.com>
CC: "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linuxarm@...neuler.org" <linuxarm@...neuler.org>
Subject: RE: [PATCH v7 1/4] hisi_acc_vfio_pci: extract public functions for
 container_of



> -----Original Message-----
> From: liulongfang <liulongfang@...wei.com>
> Sent: Tuesday, July 30, 2024 1:15 PM
> To: alex.williamson@...hat.com; jgg@...dia.com; Shameerali Kolothum
> Thodi <shameerali.kolothum.thodi@...wei.com>; Jonathan Cameron
> <jonathan.cameron@...wei.com>
> Cc: kvm@...r.kernel.org; linux-kernel@...r.kernel.org;
> linuxarm@...neuler.org; liulongfang <liulongfang@...wei.com>
> Subject: [PATCH v7 1/4] hisi_acc_vfio_pci: extract public functions for
> container_of
> 
> In the current driver, vdev is obtained from struct
> hisi_acc_vf_core_device through the container_of function.
> This method is used in many places in the driver. In order to
> reduce this repetitive operation, It was extracted into
> a public function.
> 
> Signed-off-by: Longfang Liu <liulongfang@...wei.com>
> ---

LGTM,

Reviewed-by: Shameer Kolothum <shameerali.kolothum.thodi@...wei.com>

Thanks,
Shameer

>  .../vfio/pci/hisilicon/hisi_acc_vfio_pci.c    | 21 ++++++++++---------
>  1 file changed, 11 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.c
> b/drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.c
> index 9a3e97108ace..45351be8e270 100644
> --- a/drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.c
> +++ b/drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.c
> @@ -630,6 +630,12 @@ static void hisi_acc_vf_disable_fds(struct
> hisi_acc_vf_core_device *hisi_acc_vde
>  	}
>  }
> 
> +static struct hisi_acc_vf_core_device *hisi_acc_get_vf_dev(struct
> vfio_device *vdev)
> +{
> +	return container_of(vdev, struct hisi_acc_vf_core_device,
> +			    core_device.vdev);
> +}
> +
>  static void hisi_acc_vf_reset(struct hisi_acc_vf_core_device *hisi_acc_vdev)
>  {
>  	hisi_acc_vdev->vf_qm_state = QM_NOT_READY;
> @@ -1033,8 +1039,7 @@ static struct file *
>  hisi_acc_vfio_pci_set_device_state(struct vfio_device *vdev,
>  				   enum vfio_device_mig_state new_state)
>  {
> -	struct hisi_acc_vf_core_device *hisi_acc_vdev = container_of(vdev,
> -			struct hisi_acc_vf_core_device, core_device.vdev);
> +	struct hisi_acc_vf_core_device *hisi_acc_vdev =
> hisi_acc_get_vf_dev(vdev);
>  	enum vfio_device_mig_state next_state;
>  	struct file *res = NULL;
>  	int ret;
> @@ -1075,8 +1080,7 @@ static int
>  hisi_acc_vfio_pci_get_device_state(struct vfio_device *vdev,
>  				   enum vfio_device_mig_state *curr_state)
>  {
> -	struct hisi_acc_vf_core_device *hisi_acc_vdev = container_of(vdev,
> -			struct hisi_acc_vf_core_device, core_device.vdev);
> +	struct hisi_acc_vf_core_device *hisi_acc_vdev =
> hisi_acc_get_vf_dev(vdev);
> 
>  	mutex_lock(&hisi_acc_vdev->state_mutex);
>  	*curr_state = hisi_acc_vdev->mig_state;
> @@ -1280,8 +1284,7 @@ static long hisi_acc_vfio_pci_ioctl(struct vfio_device
> *core_vdev, unsigned int
> 
>  static int hisi_acc_vfio_pci_open_device(struct vfio_device *core_vdev)
>  {
> -	struct hisi_acc_vf_core_device *hisi_acc_vdev =
> container_of(core_vdev,
> -			struct hisi_acc_vf_core_device, core_device.vdev);
> +	struct hisi_acc_vf_core_device *hisi_acc_vdev =
> hisi_acc_get_vf_dev(core_vdev);
>  	struct vfio_pci_core_device *vdev = &hisi_acc_vdev->core_device;
>  	int ret;
> 
> @@ -1304,8 +1307,7 @@ static int hisi_acc_vfio_pci_open_device(struct
> vfio_device *core_vdev)
> 
>  static void hisi_acc_vfio_pci_close_device(struct vfio_device *core_vdev)
>  {
> -	struct hisi_acc_vf_core_device *hisi_acc_vdev =
> container_of(core_vdev,
> -			struct hisi_acc_vf_core_device, core_device.vdev);
> +	struct hisi_acc_vf_core_device *hisi_acc_vdev =
> hisi_acc_get_vf_dev(core_vdev);
>  	struct hisi_qm *vf_qm = &hisi_acc_vdev->vf_qm;
> 
>  	iounmap(vf_qm->io_base);
> @@ -1320,8 +1322,7 @@ static const struct vfio_migration_ops
> hisi_acc_vfio_pci_migrn_state_ops = {
> 
>  static int hisi_acc_vfio_pci_migrn_init_dev(struct vfio_device *core_vdev)
>  {
> -	struct hisi_acc_vf_core_device *hisi_acc_vdev =
> container_of(core_vdev,
> -			struct hisi_acc_vf_core_device, core_device.vdev);
> +	struct hisi_acc_vf_core_device *hisi_acc_vdev =
> hisi_acc_get_vf_dev(core_vdev);
>  	struct pci_dev *pdev = to_pci_dev(core_vdev->dev);
>  	struct hisi_qm *pf_qm = hisi_acc_get_pf_qm(pdev);
> 
> --
> 2.24.0