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Date: Tue, 23 Apr 2019 11:35:54 -0600
From: Alex Williamson <alex.williamson@...hat.com>
To: Bjorn Helgaas <helgaas@...nel.org>
Cc: kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
Joe Perches <joe@...ches.com>,
Eric Auger <eric.auger@...hat.com>,
Bjorn Helgaas <bhelgaas@...gle.com>
Subject: Re: [PATCH 1/1] vfio: Use dev_printk() when possible
On Sat, 30 Mar 2019 09:41:35 -0500
Bjorn Helgaas <helgaas@...nel.org> wrote:
> From: Bjorn Helgaas <bhelgaas@...gle.com>
>
> Use dev_printk() when possible to make messages consistent with other
> device-related messages.
>
> Signed-off-by: Bjorn Helgaas <bhelgaas@...gle.com>
> ---
> drivers/vfio/pci/vfio_pci.c | 26 +++++++----------
> drivers/vfio/pci/vfio_pci_config.c | 28 ++++++++----------
> .../platform/reset/vfio_platform_amdxgbe.c | 5 ++--
> drivers/vfio/platform/vfio_platform_common.c | 12 ++++----
> drivers/vfio/vfio.c | 29 +++++++++----------
> include/linux/pci.h | 3 ++
> 6 files changed, 49 insertions(+), 54 deletions(-)
Applied to vfio next branch for v5.2. Thanks!
Alex
> diff --git a/drivers/vfio/pci/vfio_pci.c b/drivers/vfio/pci/vfio_pci.c
> index a25659b5a5d1..b0fb4ea3253a 100644
> --- a/drivers/vfio/pci/vfio_pci.c
> +++ b/drivers/vfio/pci/vfio_pci.c
> @@ -12,6 +12,7 @@
> */
>
> #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
> +#define dev_fmt pr_fmt
>
> #include <linux/device.h>
> #include <linux/eventfd.h>
> @@ -287,12 +288,11 @@ static int vfio_pci_enable(struct vfio_pci_device *vdev)
> pci_save_state(pdev);
> vdev->pci_saved_state = pci_store_saved_state(pdev);
> if (!vdev->pci_saved_state)
> - pr_debug("%s: Couldn't store %s saved state\n",
> - __func__, dev_name(&pdev->dev));
> + pci_dbg(pdev, "%s: Couldn't store saved state\n", __func__);
>
> if (likely(!nointxmask)) {
> if (vfio_pci_nointx(pdev)) {
> - dev_info(&pdev->dev, "Masking broken INTx support\n");
> + pci_info(pdev, "Masking broken INTx support\n");
> vdev->nointx = true;
> pci_intx(pdev, 0);
> } else
> @@ -336,8 +336,7 @@ static int vfio_pci_enable(struct vfio_pci_device *vdev)
> IS_ENABLED(CONFIG_VFIO_PCI_IGD)) {
> ret = vfio_pci_igd_init(vdev);
> if (ret) {
> - dev_warn(&vdev->pdev->dev,
> - "Failed to setup Intel IGD regions\n");
> + pci_warn(pdev, "Failed to setup Intel IGD regions\n");
> goto disable_exit;
> }
> }
> @@ -346,8 +345,7 @@ static int vfio_pci_enable(struct vfio_pci_device *vdev)
> IS_ENABLED(CONFIG_VFIO_PCI_NVLINK2)) {
> ret = vfio_pci_nvdia_v100_nvlink2_init(vdev);
> if (ret && ret != -ENODEV) {
> - dev_warn(&vdev->pdev->dev,
> - "Failed to setup NVIDIA NV2 RAM region\n");
> + pci_warn(pdev, "Failed to setup NVIDIA NV2 RAM region\n");
> goto disable_exit;
> }
> }
> @@ -356,8 +354,7 @@ static int vfio_pci_enable(struct vfio_pci_device *vdev)
> IS_ENABLED(CONFIG_VFIO_PCI_NVLINK2)) {
> ret = vfio_pci_ibm_npu2_init(vdev);
> if (ret && ret != -ENODEV) {
> - dev_warn(&vdev->pdev->dev,
> - "Failed to setup NVIDIA NV2 ATSD region\n");
> + pci_warn(pdev, "Failed to setup NVIDIA NV2 ATSD region\n");
> goto disable_exit;
> }
> }
> @@ -429,8 +426,7 @@ static void vfio_pci_disable(struct vfio_pci_device *vdev)
> * is just busy work.
> */
> if (pci_load_and_free_saved_state(pdev, &vdev->pci_saved_state)) {
> - pr_info("%s: Couldn't reload %s saved state\n",
> - __func__, dev_name(&pdev->dev));
> + pci_info(pdev, "%s: Couldn't reload saved state\n", __func__);
>
> if (!vdev->reset_works)
> goto out;
> @@ -1255,17 +1251,17 @@ static int vfio_pci_mmap(void *device_data, struct vm_area_struct *vma)
> static void vfio_pci_request(void *device_data, unsigned int count)
> {
> struct vfio_pci_device *vdev = device_data;
> + struct pci_dev *pdev = vdev->pdev;
>
> mutex_lock(&vdev->igate);
>
> if (vdev->req_trigger) {
> if (!(count % 10))
> - dev_notice_ratelimited(&vdev->pdev->dev,
> - "Relaying device request to user (#%u)\n",
> - count);
> + pci_notice_ratelimited(pdev,
> + "Relaying device request to user (#%u)\n", count);
> eventfd_signal(vdev->req_trigger, 1);
> } else if (count == 0) {
> - dev_warn(&vdev->pdev->dev,
> + pci_warn(pdev,
> "No device request channel registered, blocked until released by user\n");
> }
>
> diff --git a/drivers/vfio/pci/vfio_pci_config.c b/drivers/vfio/pci/vfio_pci_config.c
> index e82b51114687..d639ec508a84 100644
> --- a/drivers/vfio/pci/vfio_pci_config.c
> +++ b/drivers/vfio/pci/vfio_pci_config.c
> @@ -412,8 +412,7 @@ static void vfio_bar_restore(struct vfio_pci_device *vdev)
> if (pdev->is_virtfn)
> return;
>
> - pr_info("%s: %s reset recovery - restoring bars\n",
> - __func__, dev_name(&pdev->dev));
> + pci_info(pdev, "%s: reset recovery - restoring BARs\n", __func__);
>
> for (i = PCI_BASE_ADDRESS_0; i <= PCI_BASE_ADDRESS_5; i += 4, rbar++)
> pci_user_write_config_dword(pdev, i, *rbar);
> @@ -1298,8 +1297,8 @@ static int vfio_cap_len(struct vfio_pci_device *vdev, u8 cap, u8 pos)
> else
> return PCI_SATA_SIZEOF_SHORT;
> default:
> - pr_warn("%s: %s unknown length for pci cap 0x%x@...x\n",
> - dev_name(&pdev->dev), __func__, cap, pos);
> + pci_warn(pdev, "%s: unknown length for PCI cap %#x@%#x\n",
> + __func__, cap, pos);
> }
>
> return 0;
> @@ -1372,8 +1371,8 @@ static int vfio_ext_cap_len(struct vfio_pci_device *vdev, u16 ecap, u16 epos)
> }
> return PCI_TPH_BASE_SIZEOF;
> default:
> - pr_warn("%s: %s unknown length for pci ecap 0x%x@...x\n",
> - dev_name(&pdev->dev), __func__, ecap, epos);
> + pci_warn(pdev, "%s: unknown length for PCI ecap %#x@%#x\n",
> + __func__, ecap, epos);
> }
>
> return 0;
> @@ -1474,8 +1473,7 @@ static int vfio_cap_init(struct vfio_pci_device *vdev)
> }
>
> if (!len) {
> - pr_info("%s: %s hiding cap 0x%x\n",
> - __func__, dev_name(&pdev->dev), cap);
> + pci_info(pdev, "%s: hiding cap %#x@%#x\n", __func__, cap, pos);
> *prev = next;
> pos = next;
> continue;
> @@ -1486,9 +1484,8 @@ static int vfio_cap_init(struct vfio_pci_device *vdev)
> if (likely(map[pos + i] == PCI_CAP_ID_INVALID))
> continue;
>
> - pr_warn("%s: %s pci config conflict @0x%x, was cap 0x%x now cap 0x%x\n",
> - __func__, dev_name(&pdev->dev),
> - pos + i, map[pos + i], cap);
> + pci_warn(pdev, "%s: PCI config conflict @%#x, was cap %#x now cap %#x\n",
> + __func__, pos + i, map[pos + i], cap);
> }
>
> BUILD_BUG_ON(PCI_CAP_ID_MAX >= PCI_CAP_ID_INVALID_VIRT);
> @@ -1549,8 +1546,8 @@ static int vfio_ecap_init(struct vfio_pci_device *vdev)
> }
>
> if (!len) {
> - pr_info("%s: %s hiding ecap 0x%x@...x\n",
> - __func__, dev_name(&pdev->dev), ecap, epos);
> + pci_info(pdev, "%s: hiding ecap %#x@%#x\n",
> + __func__, ecap, epos);
>
> /* If not the first in the chain, we can skip over it */
> if (prev) {
> @@ -1572,9 +1569,8 @@ static int vfio_ecap_init(struct vfio_pci_device *vdev)
> if (likely(map[epos + i] == PCI_CAP_ID_INVALID))
> continue;
>
> - pr_warn("%s: %s pci config conflict @0x%x, was ecap 0x%x now ecap 0x%x\n",
> - __func__, dev_name(&pdev->dev),
> - epos + i, map[epos + i], ecap);
> + pci_warn(pdev, "%s: PCI config conflict @%#x, was ecap %#x now ecap %#x\n",
> + __func__, epos + i, map[epos + i], ecap);
> }
>
> /*
> diff --git a/drivers/vfio/platform/reset/vfio_platform_amdxgbe.c b/drivers/vfio/platform/reset/vfio_platform_amdxgbe.c
> index 3ddb2704221d..fe95964bc3be 100644
> --- a/drivers/vfio/platform/reset/vfio_platform_amdxgbe.c
> +++ b/drivers/vfio/platform/reset/vfio_platform_amdxgbe.c
> @@ -89,7 +89,8 @@ static int vfio_platform_amdxgbe_reset(struct vfio_platform_device *vdev)
> } while ((pcs_value & MDIO_CTRL1_RESET) && --count);
>
> if (pcs_value & MDIO_CTRL1_RESET)
> - pr_warn("%s XGBE PHY reset timeout\n", __func__);
> + dev_warn(vdev->device, "%s: XGBE PHY reset timeout\n",
> + __func__);
>
> /* disable auto-negotiation */
> value = xmdio_read(xpcs_regs->ioaddr, MDIO_MMD_AN, MDIO_CTRL1);
> @@ -114,7 +115,7 @@ static int vfio_platform_amdxgbe_reset(struct vfio_platform_device *vdev)
> usleep_range(500, 600);
>
> if (!count)
> - pr_warn("%s MAC SW reset failed\n", __func__);
> + dev_warn(vdev->device, "%s: MAC SW reset failed\n", __func__);
>
> return 0;
> }
> diff --git a/drivers/vfio/platform/vfio_platform_common.c b/drivers/vfio/platform/vfio_platform_common.c
> index c0cd824be2b7..d369d9ae166b 100644
> --- a/drivers/vfio/platform/vfio_platform_common.c
> +++ b/drivers/vfio/platform/vfio_platform_common.c
> @@ -12,6 +12,8 @@
> * GNU General Public License for more details.
> */
>
> +#define dev_fmt(fmt) "VFIO: " fmt
> +
> #include <linux/device.h>
> #include <linux/acpi.h>
> #include <linux/iommu.h>
> @@ -63,7 +65,7 @@ static int vfio_platform_acpi_probe(struct vfio_platform_device *vdev,
>
> adev = ACPI_COMPANION(dev);
> if (!adev) {
> - pr_err("VFIO: ACPI companion device not found for %s\n",
> + dev_err(dev, "ACPI companion device not found for %s\n",
> vdev->name);
> return -ENODEV;
> }
> @@ -638,7 +640,7 @@ static int vfio_platform_of_probe(struct vfio_platform_device *vdev,
> ret = device_property_read_string(dev, "compatible",
> &vdev->compat);
> if (ret)
> - pr_err("VFIO: Cannot retrieve compat for %s\n", vdev->name);
> + dev_err(dev, "Cannot retrieve compat for %s\n", vdev->name);
>
> return ret;
> }
> @@ -680,14 +682,14 @@ int vfio_platform_probe_common(struct vfio_platform_device *vdev,
>
> ret = vfio_platform_get_reset(vdev);
> if (ret && vdev->reset_required) {
> - pr_err("VFIO: No reset function found for device %s\n",
> - vdev->name);
> + dev_err(dev, "No reset function found for device %s\n",
> + vdev->name);
> return ret;
> }
>
> group = vfio_iommu_group_get(dev);
> if (!group) {
> - pr_err("VFIO: No IOMMU group for device %s\n", vdev->name);
> + dev_err(dev, "No IOMMU group for device %s\n", vdev->name);
> ret = -EINVAL;
> goto put_reset;
> }
> diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c
> index a3030cdf3c18..7fb68968097a 100644
> --- a/drivers/vfio/vfio.c
> +++ b/drivers/vfio/vfio.c
> @@ -704,8 +704,8 @@ static int vfio_group_nb_add_dev(struct vfio_group *group, struct device *dev)
> return 0;
>
> /* TODO Prevent device auto probing */
> - WARN(1, "Device %s added to live group %d!\n", dev_name(dev),
> - iommu_group_id(group->iommu_group));
> + dev_WARN(dev, "Device added to live group %d!\n",
> + iommu_group_id(group->iommu_group));
>
> return 0;
> }
> @@ -748,25 +748,22 @@ static int vfio_iommu_group_notifier(struct notifier_block *nb,
> */
> break;
> case IOMMU_GROUP_NOTIFY_BIND_DRIVER:
> - pr_debug("%s: Device %s, group %d binding to driver\n",
> - __func__, dev_name(dev),
> - iommu_group_id(group->iommu_group));
> + dev_dbg(dev, "%s: group %d binding to driver\n", __func__,
> + iommu_group_id(group->iommu_group));
> break;
> case IOMMU_GROUP_NOTIFY_BOUND_DRIVER:
> - pr_debug("%s: Device %s, group %d bound to driver %s\n",
> - __func__, dev_name(dev),
> - iommu_group_id(group->iommu_group), dev->driver->name);
> + dev_dbg(dev, "%s: group %d bound to driver %s\n", __func__,
> + iommu_group_id(group->iommu_group), dev->driver->name);
> BUG_ON(vfio_group_nb_verify(group, dev));
> break;
> case IOMMU_GROUP_NOTIFY_UNBIND_DRIVER:
> - pr_debug("%s: Device %s, group %d unbinding from driver %s\n",
> - __func__, dev_name(dev),
> - iommu_group_id(group->iommu_group), dev->driver->name);
> + dev_dbg(dev, "%s: group %d unbinding from driver %s\n",
> + __func__, iommu_group_id(group->iommu_group),
> + dev->driver->name);
> break;
> case IOMMU_GROUP_NOTIFY_UNBOUND_DRIVER:
> - pr_debug("%s: Device %s, group %d unbound from driver\n",
> - __func__, dev_name(dev),
> - iommu_group_id(group->iommu_group));
> + dev_dbg(dev, "%s: group %d unbound from driver\n", __func__,
> + iommu_group_id(group->iommu_group));
> /*
> * XXX An unbound device in a live group is ok, but we'd
> * really like to avoid the above BUG_ON by preventing other
> @@ -830,8 +827,8 @@ int vfio_add_group_dev(struct device *dev,
>
> device = vfio_group_get_device(group, dev);
> if (device) {
> - WARN(1, "Device %s already exists on group %d\n",
> - dev_name(dev), iommu_group_id(iommu_group));
> + dev_WARN(dev, "Device already exists on group %d\n",
> + iommu_group_id(iommu_group));
> vfio_device_put(device);
> vfio_group_put(group);
> return -EBUSY;
> diff --git a/include/linux/pci.h b/include/linux/pci.h
> index 77448215ef5b..27854731afc4 100644
> --- a/include/linux/pci.h
> +++ b/include/linux/pci.h
> @@ -2363,4 +2363,7 @@ void pci_uevent_ers(struct pci_dev *pdev, enum pci_ers_result err_type);
> #define pci_info(pdev, fmt, arg...) dev_info(&(pdev)->dev, fmt, ##arg)
> #define pci_dbg(pdev, fmt, arg...) dev_dbg(&(pdev)->dev, fmt, ##arg)
>
> +#define pci_notice_ratelimited(pdev, fmt, arg...) \
> + dev_notice_ratelimited(&(pdev)->dev, fmt, ##arg)
> +
> #endif /* LINUX_PCI_H */
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