[PATCH 1/2] xen-pciback: Use dev_printk() when possible

From: Bjorn Helgaas
Date: Wed May 27 2020 - 13:43:43 EST

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From: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>

Use dev_printk() when possible to include device and driver information in
the conventional format.

Add "#define dev_fmt" when needed to preserve DRV_NAME or KBUILD_MODNAME in
messages.

No functional change intended.

Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
---
drivers/xen/xen-pciback/conf_space.c | 16 +++++----
drivers/xen/xen-pciback/conf_space_header.c | 40 +++++++++------------
drivers/xen/xen-pciback/conf_space_quirks.c | 6 ++--
drivers/xen/xen-pciback/pci_stub.c | 38 +++++++++-----------
drivers/xen/xen-pciback/pciback_ops.c | 38 ++++++++------------
drivers/xen/xen-pciback/vpci.c | 10 +++---
6 files changed, 65 insertions(+), 83 deletions(-)

diff --git a/drivers/xen/xen-pciback/conf_space.c b/drivers/xen/xen-pciback/conf_space.c
index da51a5d34e6e..f2df4e55fc1b 100644
--- a/drivers/xen/xen-pciback/conf_space.c
+++ b/drivers/xen/xen-pciback/conf_space.c
@@ -10,6 +10,8 @@
* Author: Ryan Wilson <hap9@xxxxxxxxxxxxxx>
*/

+#define dev_fmt(fmt) DRV_NAME ": " fmt
+
#include <linux/kernel.h>
#include <linux/moduleparam.h>
#include <linux/pci.h>
@@ -155,8 +157,8 @@ int xen_pcibk_config_read(struct pci_dev *dev, int offset, int size,
u32 value = 0, tmp_val;

if (unlikely(verbose_request))
- printk(KERN_DEBUG DRV_NAME ": %s: read %d bytes at 0x%x\n",
- pci_name(dev), size, offset);
+ dev_printk(KERN_DEBUG, &dev->dev, "read %d bytes at 0x%x\n",
+ size, offset);

if (!valid_request(offset, size)) {
err = XEN_PCI_ERR_invalid_offset;
@@ -196,8 +198,8 @@ int xen_pcibk_config_read(struct pci_dev *dev, int offset, int size,

out:
if (unlikely(verbose_request))
- printk(KERN_DEBUG DRV_NAME ": %s: read %d bytes at 0x%x = %x\n",
- pci_name(dev), size, offset, value);
+ dev_printk(KERN_DEBUG, &dev->dev,
+ "read %d bytes at 0x%x = %x\n", size, offset, value);

*ret_val = value;
return xen_pcibios_err_to_errno(err);
@@ -213,9 +215,9 @@ int xen_pcibk_config_write(struct pci_dev *dev, int offset, int size, u32 value)
int field_start, field_end;

if (unlikely(verbose_request))
- printk(KERN_DEBUG
- DRV_NAME ": %s: write request %d bytes at 0x%x = %x\n",
- pci_name(dev), size, offset, value);
+ dev_printk(KERN_DEBUG, &dev->dev,
+ "write request %d bytes at 0x%x = %x\n", size,
+ offset, value);

if (!valid_request(offset, size))
return XEN_PCI_ERR_invalid_offset;
diff --git a/drivers/xen/xen-pciback/conf_space_header.c b/drivers/xen/xen-pciback/conf_space_header.c
index fb4fccb4aecc..b277b689f257 100644
--- a/drivers/xen/xen-pciback/conf_space_header.c
+++ b/drivers/xen/xen-pciback/conf_space_header.c
@@ -6,6 +6,7 @@
*/

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+#define dev_fmt pr_fmt

#include <linux/kernel.h>
#include <linux/pci.h>
@@ -68,8 +69,7 @@ static int command_write(struct pci_dev *dev, int offset, u16 value, void *data)
dev_data = pci_get_drvdata(dev);
if (!pci_is_enabled(dev) && is_enable_cmd(value)) {
if (unlikely(verbose_request))
- printk(KERN_DEBUG DRV_NAME ": %s: enable\n",
- pci_name(dev));
+ dev_printk(KERN_DEBUG, &dev->dev, "enable\n");
err = pci_enable_device(dev);
if (err)
return err;
@@ -77,8 +77,7 @@ static int command_write(struct pci_dev *dev, int offset, u16 value, void *data)
dev_data->enable_intx = 1;
} else if (pci_is_enabled(dev) && !is_enable_cmd(value)) {
if (unlikely(verbose_request))
- printk(KERN_DEBUG DRV_NAME ": %s: disable\n",
- pci_name(dev));
+ dev_printk(KERN_DEBUG, &dev->dev, "disable\n");
pci_disable_device(dev);
if (dev_data)
dev_data->enable_intx = 0;
@@ -86,34 +85,30 @@ static int command_write(struct pci_dev *dev, int offset, u16 value, void *data)

if (!dev->is_busmaster && is_master_cmd(value)) {
if (unlikely(verbose_request))
- printk(KERN_DEBUG DRV_NAME ": %s: set bus master\n",
- pci_name(dev));
+ dev_printk(KERN_DEBUG, &dev->dev, "set bus master\n");
pci_set_master(dev);
} else if (dev->is_busmaster && !is_master_cmd(value)) {
if (unlikely(verbose_request))
- printk(KERN_DEBUG DRV_NAME ": %s: clear bus master\n",
- pci_name(dev));
+ dev_printk(KERN_DEBUG, &dev->dev, "clear bus master\n");
pci_clear_master(dev);
}

if (!(cmd->val & PCI_COMMAND_INVALIDATE) &&
(value & PCI_COMMAND_INVALIDATE)) {
if (unlikely(verbose_request))
- printk(KERN_DEBUG
- DRV_NAME ": %s: enable memory-write-invalidate\n",
- pci_name(dev));
+ dev_printk(KERN_DEBUG, &dev->dev,
+ "enable memory-write-invalidate\n");
err = pci_set_mwi(dev);
if (err) {
- pr_warn("%s: cannot enable memory-write-invalidate (%d)\n",
- pci_name(dev), err);
+ dev_warn(&dev->dev, "cannot enable memory-write-invalidate (%d)\n",
+ err);
value &= ~PCI_COMMAND_INVALIDATE;
}
} else if ((cmd->val & PCI_COMMAND_INVALIDATE) &&
!(value & PCI_COMMAND_INVALIDATE)) {
if (unlikely(verbose_request))
- printk(KERN_DEBUG
- DRV_NAME ": %s: disable memory-write-invalidate\n",
- pci_name(dev));
+ dev_printk(KERN_DEBUG, &dev->dev,
+ "disable memory-write-invalidate\n");
pci_clear_mwi(dev);
}

@@ -157,8 +152,7 @@ static int rom_write(struct pci_dev *dev, int offset, u32 value, void *data)
struct pci_bar_info *bar = data;

if (unlikely(!bar)) {
- pr_warn(DRV_NAME ": driver data not found for %s\n",
- pci_name(dev));
+ dev_warn(&dev->dev, "driver data not found\n");
return XEN_PCI_ERR_op_failed;
}

@@ -194,8 +188,7 @@ static int bar_write(struct pci_dev *dev, int offset, u32 value, void *data)
u32 mask;

if (unlikely(!bar)) {
- pr_warn(DRV_NAME ": driver data not found for %s\n",
- pci_name(dev));
+ dev_warn(&dev->dev, "driver data not found\n");
return XEN_PCI_ERR_op_failed;
}

@@ -228,8 +221,7 @@ static int bar_read(struct pci_dev *dev, int offset, u32 * value, void *data)
struct pci_bar_info *bar = data;

if (unlikely(!bar)) {
- pr_warn(DRV_NAME ": driver data not found for %s\n",
- pci_name(dev));
+ dev_warn(&dev->dev, "driver data not found\n");
return XEN_PCI_ERR_op_failed;
}

@@ -433,8 +425,8 @@ int xen_pcibk_config_header_add_fields(struct pci_dev *dev)

default:
err = -EINVAL;
- pr_err("%s: Unsupported header type %d!\n",
- pci_name(dev), dev->hdr_type);
+ dev_err(&dev->dev, "Unsupported header type %d!\n",
+ dev->hdr_type);
break;
}

diff --git a/drivers/xen/xen-pciback/conf_space_quirks.c b/drivers/xen/xen-pciback/conf_space_quirks.c
index ed593d1042a6..7dc281086302 100644
--- a/drivers/xen/xen-pciback/conf_space_quirks.c
+++ b/drivers/xen/xen-pciback/conf_space_quirks.c
@@ -6,6 +6,8 @@
* Author: Chris Bookholt <hap10@xxxxxxxxxxxxxx>
*/

+#define dev_fmt(fmt) DRV_NAME ": " fmt
+
#include <linux/kernel.h>
#include <linux/pci.h>
#include "pciback.h"
@@ -35,8 +37,8 @@ static struct xen_pcibk_config_quirk *xen_pcibk_find_quirk(struct pci_dev *dev)
if (match_one_device(&tmp_quirk->devid, dev) != NULL)
goto out;
tmp_quirk = NULL;
- printk(KERN_DEBUG DRV_NAME
- ": quirk didn't match any device known\n");
+ dev_printk(KERN_DEBUG, &dev->dev,
+ "quirk didn't match any device known\n");
out:
return tmp_quirk;
}
diff --git a/drivers/xen/xen-pciback/pci_stub.c b/drivers/xen/xen-pciback/pci_stub.c
index 7af93d65ed51..e876c3d6dad1 100644
--- a/drivers/xen/xen-pciback/pci_stub.c
+++ b/drivers/xen/xen-pciback/pci_stub.c
@@ -6,6 +6,7 @@
*/

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+#define dev_fmt pr_fmt

#include <linux/module.h>
#include <linux/init.h>
@@ -626,11 +627,11 @@ static void pcistub_remove(struct pci_dev *dev)
if (found_psdev->pdev) {
int domid = xen_find_device_domain_owner(dev);

- pr_warn("****** removing device %s while still in-use by domain %d! ******\n",
+ dev_warn(&dev->dev, "****** removing device %s while still in-use by domain %d! ******\n",
pci_name(found_psdev->dev), domid);
- pr_warn("****** driver domain may still access this device's i/o resources!\n");
- pr_warn("****** shutdown driver domain before binding device\n");
- pr_warn("****** to other drivers or domains\n");
+ dev_warn(&dev->dev, "****** driver domain may still access this device's i/o resources!\n");
+ dev_warn(&dev->dev, "****** shutdown driver domain before binding device\n");
+ dev_warn(&dev->dev, "****** to other drivers or domains\n");

/* N.B. This ends up calling pcistub_put_pci_dev which ends up
* doing the FLR. */
@@ -711,14 +712,12 @@ static pci_ers_result_t common_process(struct pcistub_device *psdev,
ret = xen_pcibk_get_pcifront_dev(psdev->dev, psdev->pdev,
&aer_op->domain, &aer_op->bus, &aer_op->devfn);
if (!ret) {
- dev_err(&psdev->dev->dev,
- DRV_NAME ": failed to get pcifront device\n");
+ dev_err(&psdev->dev->dev, "failed to get pcifront device\n");
return PCI_ERS_RESULT_NONE;
}
wmb();

- dev_dbg(&psdev->dev->dev,
- DRV_NAME ": aer_op %x dom %x bus %x devfn %x\n",
+ dev_dbg(&psdev->dev->dev, "aer_op %x dom %x bus %x devfn %x\n",
aer_cmd, aer_op->domain, aer_op->bus, aer_op->devfn);
/*local flag to mark there's aer request, xen_pcibk callback will use
* this flag to judge whether we need to check pci-front give aer
@@ -754,8 +753,7 @@ static pci_ers_result_t common_process(struct pcistub_device *psdev,

if (test_bit(_XEN_PCIF_active,
(unsigned long *)&sh_info->flags)) {
- dev_dbg(&psdev->dev->dev,
- "schedule pci_conf service in " DRV_NAME "\n");
+ dev_dbg(&psdev->dev->dev, "schedule pci_conf service\n");
xen_pcibk_test_and_schedule_op(psdev->pdev);
}

@@ -786,13 +784,12 @@ static pci_ers_result_t xen_pcibk_slot_reset(struct pci_dev *dev)
PCI_FUNC(dev->devfn));

if (!psdev || !psdev->pdev) {
- dev_err(&dev->dev,
- DRV_NAME " device is not found/assigned\n");
+ dev_err(&dev->dev, "device is not found/assigned\n");
goto end;
}

if (!psdev->pdev->sh_info) {
- dev_err(&dev->dev, DRV_NAME " device is not connected or owned"
+ dev_err(&dev->dev, "device is not connected or owned"
" by HVM, kill it\n");
kill_domain_by_device(psdev);
goto end;
@@ -844,13 +841,12 @@ static pci_ers_result_t xen_pcibk_mmio_enabled(struct pci_dev *dev)
PCI_FUNC(dev->devfn));

if (!psdev || !psdev->pdev) {
- dev_err(&dev->dev,
- DRV_NAME " device is not found/assigned\n");
+ dev_err(&dev->dev, "device is not found/assigned\n");
goto end;
}

if (!psdev->pdev->sh_info) {
- dev_err(&dev->dev, DRV_NAME " device is not connected or owned"
+ dev_err(&dev->dev, "device is not connected or owned"
" by HVM, kill it\n");
kill_domain_by_device(psdev);
goto end;
@@ -902,13 +898,12 @@ static pci_ers_result_t xen_pcibk_error_detected(struct pci_dev *dev,
PCI_FUNC(dev->devfn));

if (!psdev || !psdev->pdev) {
- dev_err(&dev->dev,
- DRV_NAME " device is not found/assigned\n");
+ dev_err(&dev->dev, "device is not found/assigned\n");
goto end;
}

if (!psdev->pdev->sh_info) {
- dev_err(&dev->dev, DRV_NAME " device is not connected or owned"
+ dev_err(&dev->dev, "device is not connected or owned"
" by HVM, kill it\n");
kill_domain_by_device(psdev);
goto end;
@@ -956,13 +951,12 @@ static void xen_pcibk_error_resume(struct pci_dev *dev)
PCI_FUNC(dev->devfn));

if (!psdev || !psdev->pdev) {
- dev_err(&dev->dev,
- DRV_NAME " device is not found/assigned\n");
+ dev_err(&dev->dev, "device is not found/assigned\n");
goto end;
}

if (!psdev->pdev->sh_info) {
- dev_err(&dev->dev, DRV_NAME " device is not connected or owned"
+ dev_err(&dev->dev, "device is not connected or owned"
" by HVM, kill it\n");
kill_domain_by_device(psdev);
goto end;
diff --git a/drivers/xen/xen-pciback/pciback_ops.c b/drivers/xen/xen-pciback/pciback_ops.c
index 787966f44589..8545ca78c4f1 100644
--- a/drivers/xen/xen-pciback/pciback_ops.c
+++ b/drivers/xen/xen-pciback/pciback_ops.c
@@ -6,6 +6,7 @@
*/

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+#define dev_fmt pr_fmt

#include <linux/moduleparam.h>
#include <linux/wait.h>
@@ -148,7 +149,7 @@ int xen_pcibk_enable_msi(struct xen_pcibk_device *pdev,
int status;

if (unlikely(verbose_request))
- printk(KERN_DEBUG DRV_NAME ": %s: enable MSI\n", pci_name(dev));
+ dev_printk(KERN_DEBUG, &dev->dev, "enable MSI\n");

if (dev->msi_enabled)
status = -EALREADY;
@@ -158,9 +159,8 @@ int xen_pcibk_enable_msi(struct xen_pcibk_device *pdev,
status = pci_enable_msi(dev);

if (status) {
- pr_warn_ratelimited("%s: error enabling MSI for guest %u: err %d\n",
- pci_name(dev), pdev->xdev->otherend_id,
- status);
+ dev_warn_ratelimited(&dev->dev, "error enabling MSI for guest %u: err %d\n",
+ pdev->xdev->otherend_id, status);
op->value = 0;
return XEN_PCI_ERR_op_failed;
}
@@ -170,8 +170,7 @@ int xen_pcibk_enable_msi(struct xen_pcibk_device *pdev,

op->value = dev->irq ? xen_pirq_from_irq(dev->irq) : 0;
if (unlikely(verbose_request))
- printk(KERN_DEBUG DRV_NAME ": %s: MSI: %d\n", pci_name(dev),
- op->value);
+ dev_printk(KERN_DEBUG, &dev->dev, "MSI: %d\n", op->value);

dev_data = pci_get_drvdata(dev);
if (dev_data)
@@ -185,8 +184,7 @@ int xen_pcibk_disable_msi(struct xen_pcibk_device *pdev,
struct pci_dev *dev, struct xen_pci_op *op)
{
if (unlikely(verbose_request))
- printk(KERN_DEBUG DRV_NAME ": %s: disable MSI\n",
- pci_name(dev));
+ dev_printk(KERN_DEBUG, &dev->dev, "disable MSI\n");

if (dev->msi_enabled) {
struct xen_pcibk_dev_data *dev_data;
@@ -199,8 +197,7 @@ int xen_pcibk_disable_msi(struct xen_pcibk_device *pdev,
}
op->value = dev->irq ? xen_pirq_from_irq(dev->irq) : 0;
if (unlikely(verbose_request))
- printk(KERN_DEBUG DRV_NAME ": %s: MSI: %d\n", pci_name(dev),
- op->value);
+ dev_printk(KERN_DEBUG, &dev->dev, "MSI: %d\n", op->value);
return 0;
}

@@ -214,8 +211,7 @@ int xen_pcibk_enable_msix(struct xen_pcibk_device *pdev,
u16 cmd;

if (unlikely(verbose_request))
- printk(KERN_DEBUG DRV_NAME ": %s: enable MSI-X\n",
- pci_name(dev));
+ dev_printk(KERN_DEBUG, &dev->dev, "enable MSI-X\n");

if (op->value > SH_INFO_MAX_VEC)
return -EINVAL;
@@ -249,16 +245,14 @@ int xen_pcibk_enable_msix(struct xen_pcibk_device *pdev,
op->msix_entries[i].vector =
xen_pirq_from_irq(entries[i].vector);
if (unlikely(verbose_request))
- printk(KERN_DEBUG DRV_NAME ": %s: " \
- "MSI-X[%d]: %d\n",
- pci_name(dev), i,
+ dev_printk(KERN_DEBUG, &dev->dev,
+ "MSI-X[%d]: %d\n", i,
op->msix_entries[i].vector);
}
}
} else
- pr_warn_ratelimited("%s: error enabling MSI-X for guest %u: err %d!\n",
- pci_name(dev), pdev->xdev->otherend_id,
- result);
+ dev_warn_ratelimited(&dev->dev, "error enabling MSI-X for guest %u: err %d!\n",
+ pdev->xdev->otherend_id, result);
kfree(entries);

op->value = result;
@@ -274,8 +268,7 @@ int xen_pcibk_disable_msix(struct xen_pcibk_device *pdev,
struct pci_dev *dev, struct xen_pci_op *op)
{
if (unlikely(verbose_request))
- printk(KERN_DEBUG DRV_NAME ": %s: disable MSI-X\n",
- pci_name(dev));
+ dev_printk(KERN_DEBUG, &dev->dev, "disable MSI-X\n");

if (dev->msix_enabled) {
struct xen_pcibk_dev_data *dev_data;
@@ -292,8 +285,7 @@ int xen_pcibk_disable_msix(struct xen_pcibk_device *pdev,
*/
op->value = dev->irq ? xen_pirq_from_irq(dev->irq) : 0;
if (unlikely(verbose_request))
- printk(KERN_DEBUG DRV_NAME ": %s: MSI-X: %d\n",
- pci_name(dev), op->value);
+ dev_printk(KERN_DEBUG, &dev->dev, "MSI-X: %d\n", op->value);
return 0;
}
#endif
@@ -424,7 +416,7 @@ static irqreturn_t xen_pcibk_guest_interrupt(int irq, void *dev_id)
dev_data->handled++;
if ((dev_data->handled % 1000) == 0) {
if (xen_test_irq_shared(irq)) {
- pr_info("%s IRQ line is not shared "
+ dev_info(&dev->dev, "%s IRQ line is not shared "
"with other domains. Turning ISR off\n",
dev_data->irq_name);
dev_data->ack_intr = 0;
diff --git a/drivers/xen/xen-pciback/vpci.c b/drivers/xen/xen-pciback/vpci.c
index f6ba18191c0f..5447b5ab7c76 100644
--- a/drivers/xen/xen-pciback/vpci.c
+++ b/drivers/xen/xen-pciback/vpci.c
@@ -7,6 +7,7 @@
*/

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+#define dev_fmt pr_fmt

#include <linux/list.h>
#include <linux/slab.h>
@@ -105,9 +106,8 @@ static int __xen_pcibk_add_pci_dev(struct xen_pcibk_device *pdev,
struct pci_dev_entry, list);

if (match_slot(dev, t->dev)) {
- pr_info("vpci: %s: assign to virtual slot %d func %d\n",
- pci_name(dev), slot,
- PCI_FUNC(dev->devfn));
+ dev_info(&dev->dev, "vpci: assign to virtual slot %d func %d\n",
+ slot, PCI_FUNC(dev->devfn));
list_add_tail(&dev_entry->list,
&vpci_dev->dev_list[slot]);
func = PCI_FUNC(dev->devfn);
@@ -119,8 +119,8 @@ static int __xen_pcibk_add_pci_dev(struct xen_pcibk_device *pdev,
/* Assign to a new slot on the virtual PCI bus */
for (slot = 0; slot < PCI_SLOT_MAX; slot++) {
if (list_empty(&vpci_dev->dev_list[slot])) {
- pr_info("vpci: %s: assign to virtual slot %d\n",
- pci_name(dev), slot);
+ dev_info(&dev->dev, "vpci: assign to virtual slot %d\n",
+ slot);
list_add_tail(&dev_entry->list,
&vpci_dev->dev_list[slot]);
func = dev->is_virtfn ? 0 : PCI_FUNC(dev->devfn);
--
2.25.1

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