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device-dax: remove redundant __func__ in dev_dbg
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Dynamic debug can be instructed to add the function name to the debug
output using the +f switch, so there is no need for the dax modules to
do it again. If a user decides to add the +f switch for the dax modules'
dynamic debug this results in double prints of the function name.

Reported-by: Johannes Thumshirn <jthumshirn@suse.de>
Reported-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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Dan Williams committed Mar 6, 2018
1 parent 426824d commit 6daaca5
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Showing 2 changed files with 20 additions and 24 deletions.
38 changes: 17 additions & 21 deletions drivers/dax/device.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -257,8 +257,8 @@ static int __dev_dax_pte_fault(struct dev_dax *dev_dax, struct vm_fault *vmf)

dax_region = dev_dax->region;
if (dax_region->align > PAGE_SIZE) {
dev_dbg(dev, "%s: alignment (%#x) > fault size (%#x)\n",
__func__, dax_region->align, fault_size);
dev_dbg(dev, "alignment (%#x) > fault size (%#x)\n",
dax_region->align, fault_size);
return VM_FAULT_SIGBUS;
}

Expand All @@ -267,8 +267,7 @@ static int __dev_dax_pte_fault(struct dev_dax *dev_dax, struct vm_fault *vmf)

phys = dax_pgoff_to_phys(dev_dax, vmf->pgoff, PAGE_SIZE);
if (phys == -1) {
dev_dbg(dev, "%s: pgoff_to_phys(%#lx) failed\n", __func__,
vmf->pgoff);
dev_dbg(dev, "pgoff_to_phys(%#lx) failed\n", vmf->pgoff);
return VM_FAULT_SIGBUS;
}

Expand Down Expand Up @@ -299,14 +298,14 @@ static int __dev_dax_pmd_fault(struct dev_dax *dev_dax, struct vm_fault *vmf)

dax_region = dev_dax->region;
if (dax_region->align > PMD_SIZE) {
dev_dbg(dev, "%s: alignment (%#x) > fault size (%#x)\n",
__func__, dax_region->align, fault_size);
dev_dbg(dev, "alignment (%#x) > fault size (%#x)\n",
dax_region->align, fault_size);
return VM_FAULT_SIGBUS;
}

/* dax pmd mappings require pfn_t_devmap() */
if ((dax_region->pfn_flags & (PFN_DEV|PFN_MAP)) != (PFN_DEV|PFN_MAP)) {
dev_dbg(dev, "%s: region lacks devmap flags\n", __func__);
dev_dbg(dev, "region lacks devmap flags\n");
return VM_FAULT_SIGBUS;
}

Expand All @@ -323,8 +322,7 @@ static int __dev_dax_pmd_fault(struct dev_dax *dev_dax, struct vm_fault *vmf)
pgoff = linear_page_index(vmf->vma, pmd_addr);
phys = dax_pgoff_to_phys(dev_dax, pgoff, PMD_SIZE);
if (phys == -1) {
dev_dbg(dev, "%s: pgoff_to_phys(%#lx) failed\n", __func__,
pgoff);
dev_dbg(dev, "pgoff_to_phys(%#lx) failed\n", pgoff);
return VM_FAULT_SIGBUS;
}

Expand All @@ -351,14 +349,14 @@ static int __dev_dax_pud_fault(struct dev_dax *dev_dax, struct vm_fault *vmf)

dax_region = dev_dax->region;
if (dax_region->align > PUD_SIZE) {
dev_dbg(dev, "%s: alignment (%#x) > fault size (%#x)\n",
__func__, dax_region->align, fault_size);
dev_dbg(dev, "alignment (%#x) > fault size (%#x)\n",
dax_region->align, fault_size);
return VM_FAULT_SIGBUS;
}

/* dax pud mappings require pfn_t_devmap() */
if ((dax_region->pfn_flags & (PFN_DEV|PFN_MAP)) != (PFN_DEV|PFN_MAP)) {
dev_dbg(dev, "%s: region lacks devmap flags\n", __func__);
dev_dbg(dev, "region lacks devmap flags\n");
return VM_FAULT_SIGBUS;
}

Expand All @@ -375,8 +373,7 @@ static int __dev_dax_pud_fault(struct dev_dax *dev_dax, struct vm_fault *vmf)
pgoff = linear_page_index(vmf->vma, pud_addr);
phys = dax_pgoff_to_phys(dev_dax, pgoff, PUD_SIZE);
if (phys == -1) {
dev_dbg(dev, "%s: pgoff_to_phys(%#lx) failed\n", __func__,
pgoff);
dev_dbg(dev, "pgoff_to_phys(%#lx) failed\n", pgoff);
return VM_FAULT_SIGBUS;
}

Expand All @@ -399,9 +396,8 @@ static int dev_dax_huge_fault(struct vm_fault *vmf,
struct file *filp = vmf->vma->vm_file;
struct dev_dax *dev_dax = filp->private_data;

dev_dbg(&dev_dax->dev, "%s: %s: %s (%#lx - %#lx) size = %d\n", __func__,
current->comm, (vmf->flags & FAULT_FLAG_WRITE)
? "write" : "read",
dev_dbg(&dev_dax->dev, "%s: %s (%#lx - %#lx) size = %d\n", current->comm,
(vmf->flags & FAULT_FLAG_WRITE) ? "write" : "read",
vmf->vma->vm_start, vmf->vma->vm_end, pe_size);

id = dax_read_lock();
Expand Down Expand Up @@ -450,7 +446,7 @@ static int dax_mmap(struct file *filp, struct vm_area_struct *vma)
struct dev_dax *dev_dax = filp->private_data;
int rc, id;

dev_dbg(&dev_dax->dev, "%s\n", __func__);
dev_dbg(&dev_dax->dev, "trace\n");

/*
* We lock to check dax_dev liveness and will re-check at
Expand Down Expand Up @@ -508,7 +504,7 @@ static int dax_open(struct inode *inode, struct file *filp)
struct inode *__dax_inode = dax_inode(dax_dev);
struct dev_dax *dev_dax = dax_get_private(dax_dev);

dev_dbg(&dev_dax->dev, "%s\n", __func__);
dev_dbg(&dev_dax->dev, "trace\n");
inode->i_mapping = __dax_inode->i_mapping;
inode->i_mapping->host = __dax_inode;
filp->f_mapping = inode->i_mapping;
Expand All @@ -523,7 +519,7 @@ static int dax_release(struct inode *inode, struct file *filp)
{
struct dev_dax *dev_dax = filp->private_data;

dev_dbg(&dev_dax->dev, "%s\n", __func__);
dev_dbg(&dev_dax->dev, "trace\n");
return 0;
}

Expand Down Expand Up @@ -565,7 +561,7 @@ static void unregister_dev_dax(void *dev)
struct inode *inode = dax_inode(dax_dev);
struct cdev *cdev = inode->i_cdev;

dev_dbg(dev, "%s\n", __func__);
dev_dbg(dev, "trace\n");

kill_dev_dax(dev_dax);
cdev_device_del(cdev, dev);
Expand Down
6 changes: 3 additions & 3 deletions drivers/dax/pmem.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -34,7 +34,7 @@ static void dax_pmem_percpu_release(struct percpu_ref *ref)
{
struct dax_pmem *dax_pmem = to_dax_pmem(ref);

dev_dbg(dax_pmem->dev, "%s\n", __func__);
dev_dbg(dax_pmem->dev, "trace\n");
complete(&dax_pmem->cmp);
}

Expand All @@ -43,7 +43,7 @@ static void dax_pmem_percpu_exit(void *data)
struct percpu_ref *ref = data;
struct dax_pmem *dax_pmem = to_dax_pmem(ref);

dev_dbg(dax_pmem->dev, "%s\n", __func__);
dev_dbg(dax_pmem->dev, "trace\n");
wait_for_completion(&dax_pmem->cmp);
percpu_ref_exit(ref);
}
Expand All @@ -53,7 +53,7 @@ static void dax_pmem_percpu_kill(void *data)
struct percpu_ref *ref = data;
struct dax_pmem *dax_pmem = to_dax_pmem(ref);

dev_dbg(dax_pmem->dev, "%s\n", __func__);
dev_dbg(dax_pmem->dev, "trace\n");
percpu_ref_kill(ref);
}

Expand Down

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