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Date: Tue, 03 Jul 2018 10:34:12 -0700
From: Joe Perches <joe@...ches.com>
To: Walter Harms <wharms@....de>, "Hook, Gary" <ghook@....com>,
Colin Ian King <colin.king@...onical.com>,
Joerg Roedel <joro@...tes.org>,
iommu@...ts.linux-foundation.org, kernel-janitors@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH] iommu/amd: fix missing tag from dev_err message
On Tue, 2018-07-03 at 18:57 +0200, Walter Harms wrote:
> It is only cosmetics but even the author got lost about the loose bracket.
> I would suggest to remove all the brackets or if needed to move the [ in the
> message. We have enought memory this days.
My suggestion would be to remove the separate dev_err
and use "Event log [" in each dev_err.
So here's an actual suggested patch that does a few things:
o Coalesce formats and realigns arguments
o Uses pr_fmt and dev_fmt to prefix "AMD-Vi: " to all messages
o Remove embedded "AMD-Vi: " from various formats
Some existing pr_<level> uses now are prefixed too.
---
drivers/iommu/amd_iommu.c | 69 +++++++++++++++++++++++------------------------
1 file changed, 34 insertions(+), 35 deletions(-)
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 596b95c50051..01583a8ccaf9 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -17,6 +17,9 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
+#define pr_fmt(fmt) "AMD-Vi: " fmt
+#define dev_fmt pr_fmt
+
#include <linux/ratelimit.h>
#include <linux/pci.h>
#include <linux/acpi.h>
@@ -273,9 +276,8 @@ static u16 get_alias(struct device *dev)
return pci_alias;
}
- pr_info("AMD-Vi: Using IVRS reported alias %02x:%02x.%d "
- "for device %s[%04x:%04x], kernel reported alias "
- "%02x:%02x.%d\n", PCI_BUS_NUM(ivrs_alias), PCI_SLOT(ivrs_alias),
+ pr_info("Using IVRS reported alias %02x:%02x.%d for device %s[%04x:%04x], kernel reported alias %02x:%02x.%d\n",
+ PCI_BUS_NUM(ivrs_alias), PCI_SLOT(ivrs_alias),
PCI_FUNC(ivrs_alias), dev_name(dev), pdev->vendor, pdev->device,
PCI_BUS_NUM(pci_alias), PCI_SLOT(pci_alias),
PCI_FUNC(pci_alias));
@@ -287,7 +289,7 @@ static u16 get_alias(struct device *dev)
if (pci_alias == devid &&
PCI_BUS_NUM(ivrs_alias) == pdev->bus->number) {
pci_add_dma_alias(pdev, ivrs_alias & 0xff);
- pr_info("AMD-Vi: Added PCI DMA alias %02x.%d for %s\n",
+ pr_info("Added PCI DMA alias %02x.%d for %s\n",
PCI_SLOT(ivrs_alias), PCI_FUNC(ivrs_alias),
dev_name(dev));
}
@@ -507,8 +509,8 @@ static void dump_dte_entry(u16 devid)
int i;
for (i = 0; i < 4; ++i)
- pr_err("AMD-Vi: DTE[%d]: %016llx\n", i,
- amd_iommu_dev_table[devid].data[i]);
+ pr_err("DTE[%d]: %016llx\n",
+ i, amd_iommu_dev_table[devid].data[i]);
}
static void dump_command(unsigned long phys_addr)
@@ -517,7 +519,7 @@ static void dump_command(unsigned long phys_addr)
int i;
for (i = 0; i < 4; ++i)
- pr_err("AMD-Vi: CMD[%d]: %08x\n", i, cmd->data[i]);
+ pr_err("CMD[%d]: %08x\n", i, cmd->data[i]);
}
static void amd_iommu_report_page_fault(u16 devid, u16 domain_id,
@@ -532,10 +534,10 @@ static void amd_iommu_report_page_fault(u16 devid, u16 domain_id,
dev_data = get_dev_data(&pdev->dev);
if (dev_data && __ratelimit(&dev_data->rs)) {
- dev_err(&pdev->dev, "AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x%04x address=0x%016llx flags=0x%04x]\n",
+ dev_err(&pdev->dev, "Event logged [IO_PAGE_FAULT domain=0x%04x address=0x%016llx flags=0x%04x]\n",
domain_id, address, flags);
} else if (printk_ratelimit()) {
- pr_err("AMD-Vi: Event logged [IO_PAGE_FAULT device=%02x:%02x.%x domain=0x%04x address=0x%016llx flags=0x%04x]\n",
+ pr_err("Event logged [IO_PAGE_FAULT device=%02x:%02x.%x domain=0x%04x address=0x%016llx flags=0x%04x]\n",
PCI_BUS_NUM(devid), PCI_SLOT(devid), PCI_FUNC(devid),
domain_id, address, flags);
}
@@ -562,7 +564,7 @@ static void iommu_print_event(struct amd_iommu *iommu, void *__evt)
if (type == 0) {
/* Did we hit the erratum? */
if (++count == LOOP_TIMEOUT) {
- pr_err("AMD-Vi: No event written to event log\n");
+ pr_err("No event written to event log\n");
return;
}
udelay(1);
@@ -572,43 +574,40 @@ static void iommu_print_event(struct amd_iommu *iommu, void *__evt)
if (type == EVENT_TYPE_IO_FAULT) {
amd_iommu_report_page_fault(devid, pasid, address, flags);
return;
- } else {
- dev_err(dev, "AMD-Vi: Event logged [");
}
switch (type) {
case EVENT_TYPE_ILL_DEV:
- dev_err(dev, "ILLEGAL_DEV_TABLE_ENTRY device=%02x:%02x.%x pasid=0x%05x address=0x%016llx flags=0x%04x]\n",
+ dev_err(dev, "Event logged [ILLEGAL_DEV_TABLE_ENTRY device=%02x:%02x.%x pasid=0x%05x address=0x%016llx flags=0x%04x]\n",
PCI_BUS_NUM(devid), PCI_SLOT(devid), PCI_FUNC(devid),
pasid, address, flags);
dump_dte_entry(devid);
break;
case EVENT_TYPE_DEV_TAB_ERR:
- dev_err(dev, "DEV_TAB_HARDWARE_ERROR device=%02x:%02x.%x "
- "address=0x%016llx flags=0x%04x]\n",
+ dev_err(dev, "Event logged [DEV_TAB_HARDWARE_ERROR device=%02x:%02x.%x address=0x%016llx flags=0x%04x]\n",
PCI_BUS_NUM(devid), PCI_SLOT(devid), PCI_FUNC(devid),
address, flags);
break;
case EVENT_TYPE_PAGE_TAB_ERR:
- dev_err(dev, "PAGE_TAB_HARDWARE_ERROR device=%02x:%02x.%x domain=0x%04x address=0x%016llx flags=0x%04x]\n",
+ dev_err(dev, "Event logged [PAGE_TAB_HARDWARE_ERROR device=%02x:%02x.%x domain=0x%04x address=0x%016llx flags=0x%04x]\n",
PCI_BUS_NUM(devid), PCI_SLOT(devid), PCI_FUNC(devid),
pasid, address, flags);
break;
case EVENT_TYPE_ILL_CMD:
- dev_err(dev, "ILLEGAL_COMMAND_ERROR address=0x%016llx]\n", address);
+ dev_err(dev, "Event logged [ILLEGAL_COMMAND_ERROR address=0x%016llx]\n", address);
dump_command(address);
break;
case EVENT_TYPE_CMD_HARD_ERR:
- dev_err(dev, "COMMAND_HARDWARE_ERROR address=0x%016llx flags=0x%04x]\n",
+ dev_err(dev, "Event logged [COMMAND_HARDWARE_ERROR address=0x%016llx flags=0x%04x]\n",
address, flags);
break;
case EVENT_TYPE_IOTLB_INV_TO:
- dev_err(dev, "IOTLB_INV_TIMEOUT device=%02x:%02x.%x address=0x%016llx]\n",
+ dev_err(dev, "Event logged [IOTLB_INV_TIMEOUT device=%02x:%02x.%x address=0x%016llx]\n",
PCI_BUS_NUM(devid), PCI_SLOT(devid), PCI_FUNC(devid),
address);
break;
case EVENT_TYPE_INV_DEV_REQ:
- dev_err(dev, "INVALID_DEVICE_REQUEST device=%02x:%02x.%x pasid=0x%05x address=0x%016llx flags=0x%04x]\n",
+ dev_err(dev, "Event logged [INVALID_DEVICE_REQUEST device=%02x:%02x.%x pasid=0x%05x address=0x%016llx flags=0x%04x]\n",
PCI_BUS_NUM(devid), PCI_SLOT(devid), PCI_FUNC(devid),
pasid, address, flags);
break;
@@ -616,12 +615,12 @@ static void iommu_print_event(struct amd_iommu *iommu, void *__evt)
pasid = ((event[0] >> 16) & 0xFFFF)
| ((event[1] << 6) & 0xF0000);
tag = event[1] & 0x03FF;
- dev_err(dev, "INVALID_PPR_REQUEST device=%02x:%02x.%x pasid=0x%05x address=0x%016llx flags=0x%04x]\n",
+ dev_err(dev, "Event logged [INVALID_PPR_REQUEST device=%02x:%02x.%x pasid=0x%05x address=0x%016llx flags=0x%04x]\n",
PCI_BUS_NUM(devid), PCI_SLOT(devid), PCI_FUNC(devid),
pasid, address, flags);
break;
default:
- dev_err(dev, "UNKNOWN event[0]=0x%08x event[1]=0x%08x event[2]=0x%08x event[3]=0x%08x\n",
+ dev_err(dev, "Event logged [UNKNOWN event[0]=0x%08x event[1]=0x%08x event[2]=0x%08x event[3]=0x%08x\n",
event[0], event[1], event[2], event[3]);
}
@@ -648,7 +647,7 @@ static void iommu_handle_ppr_entry(struct amd_iommu *iommu, u64 *raw)
struct amd_iommu_fault fault;
if (PPR_REQ_TYPE(raw[0]) != PPR_REQ_FAULT) {
- pr_err_ratelimited("AMD-Vi: Unknown PPR request received\n");
+ pr_err_ratelimited("Unknown PPR request received\n");
return;
}
@@ -753,12 +752,12 @@ static void iommu_poll_ga_log(struct amd_iommu *iommu)
if (!iommu_ga_log_notifier)
break;
- pr_debug("AMD-Vi: %s: devid=%#x, ga_tag=%#x\n",
+ pr_debug("%s: devid=%#x, ga_tag=%#x\n",
__func__, GA_DEVID(log_entry),
GA_TAG(log_entry));
if (iommu_ga_log_notifier(GA_TAG(log_entry)) != 0)
- pr_err("AMD-Vi: GA log notifier failed.\n");
+ pr_err("GA log notifier failed\n");
break;
default:
break;
@@ -783,18 +782,18 @@ irqreturn_t amd_iommu_int_thread(int irq, void *data)
iommu->mmio_base + MMIO_STATUS_OFFSET);
if (status & MMIO_STATUS_EVT_INT_MASK) {
- pr_devel("AMD-Vi: Processing IOMMU Event Log\n");
+ pr_devel("Processing IOMMU Event Log\n");
iommu_poll_events(iommu);
}
if (status & MMIO_STATUS_PPR_INT_MASK) {
- pr_devel("AMD-Vi: Processing IOMMU PPR Log\n");
+ pr_devel("Processing IOMMU PPR Log\n");
iommu_poll_ppr_log(iommu);
}
#ifdef CONFIG_IRQ_REMAP
if (status & MMIO_STATUS_GALOG_INT_MASK) {
- pr_devel("AMD-Vi: Processing IOMMU GA Log\n");
+ pr_devel("Processing IOMMU GA Log\n");
iommu_poll_ga_log(iommu);
}
#endif
@@ -838,7 +837,7 @@ static int wait_on_sem(volatile u64 *sem)
}
if (i == LOOP_TIMEOUT) {
- pr_alert("AMD-Vi: Completion-Wait loop timed out\n");
+ pr_alert("Completion-Wait loop timed out\n");
return -EIO;
}
@@ -1030,7 +1029,7 @@ static int __iommu_queue_command_sync(struct amd_iommu *iommu,
/* Skip udelay() the first time around */
if (count++) {
if (count == LOOP_TIMEOUT) {
- pr_err("AMD-Vi: Command buffer timeout\n");
+ pr_err("Command buffer timeout\n");
return -EIO;
}
@@ -2794,9 +2793,9 @@ int __init amd_iommu_init_dma_ops(void)
dma_ops = &dma_direct_ops;
if (amd_iommu_unmap_flush)
- pr_info("AMD-Vi: IO/TLB flush on unmap enabled\n");
+ pr_info("IO/TLB flush on unmap enabled\n");
else
- pr_info("AMD-Vi: Lazy IO/TLB flushing enabled\n");
+ pr_info("Lazy IO/TLB flushing enabled\n");
return 0;
@@ -2901,7 +2900,7 @@ static struct iommu_domain *amd_iommu_domain_alloc(unsigned type)
case IOMMU_DOMAIN_DMA:
dma_domain = dma_ops_domain_alloc();
if (!dma_domain) {
- pr_err("AMD-Vi: Failed to allocate\n");
+ pr_err("Failed to allocate\n");
return NULL;
}
pdomain = &dma_domain->domain;
@@ -3121,7 +3120,7 @@ static void amd_iommu_get_resv_regions(struct device *dev,
IOMMU_RESV_DIRECT);
if (!region) {
pr_err("Out of memory allocating dm-regions for %s\n",
- dev_name(dev));
+ dev_name(dev));
return;
}
list_add_tail(®ion->list, head);
@@ -4317,7 +4316,7 @@ static int amd_ir_set_vcpu_affinity(struct irq_data *data, void *vcpu_info)
* legacy mode. So, we force legacy mode instead.
*/
if (!AMD_IOMMU_GUEST_IR_VAPIC(amd_iommu_guest_ir)) {
- pr_debug("AMD-Vi: %s: Fall back to using intr legacy remap\n",
+ pr_debug("%s: Fall back to using intr legacy remap\n",
__func__);
pi_data->is_guest_mode = false;
}
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