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authorMartin Schwidefsky <schwidefsky@de.ibm.com>2013-06-19 14:26:46 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2013-06-26 21:10:27 +0200
commit386aa051fb4b6298c23996e68b7c92f186e484b6 (patch)
treeedb3cef554b84278ba9c405a9f2ba1574d0638c1 /arch/s390
parenta9a5250cc650b54623827386247b85ba2aeeecc7 (diff)
downloadlinux-386aa051fb4b6298c23996e68b7c92f186e484b6.tar.bz2
s390/pci: remove per device debug attribute
The per-pci-device 'debug' attribute is ill defined. For each device it prints the same information, the adapter interrupt bit vector for irq numbers 0 & 1, the start of the global interrupt summary vector and the global irq retries counter. Just remove the attribute and the associated code. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390')
-rw-r--r--arch/s390/include/asm/pci.h1
-rw-r--r--arch/s390/pci/pci.c13
-rw-r--r--arch/s390/pci/pci_debug.c29
3 files changed, 0 insertions, 43 deletions
diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h
index be41f4f885ce..6e577ba0e5da 100644
--- a/arch/s390/include/asm/pci.h
+++ b/arch/s390/include/asm/pci.h
@@ -120,7 +120,6 @@ struct zpci_dev {
struct dentry *debugfs_dev;
struct dentry *debugfs_perf;
- struct dentry *debugfs_debug;
};
struct pci_hp_callback_ops {
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
index 628769b91b97..51c3ca86bd05 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c
@@ -85,8 +85,6 @@ static struct intr_bucket *bucket;
/* Adapter local summary indicator */
static u8 *zpci_irq_si;
-static atomic_t irq_retries = ATOMIC_INIT(0);
-
/* I/O Map */
static DEFINE_SPINLOCK(zpci_iomap_lock);
static DECLARE_BITMAP(zpci_iomap, ZPCI_IOMAP_MAX_ENTRIES);
@@ -452,7 +450,6 @@ scan:
max = aisb_max;
sbit = find_first_bit_left(bucket->aisb, max);
if (sbit != max) {
- atomic_inc(&irq_retries);
rescan++;
goto scan;
}
@@ -751,16 +748,6 @@ static void zpci_irq_exit(void)
kfree(bucket);
}
-void zpci_debug_info(struct zpci_dev *zdev, struct seq_file *m)
-{
- if (!zdev)
- return;
-
- seq_printf(m, "global irq retries: %u\n", atomic_read(&irq_retries));
- seq_printf(m, "aibv[0]:%016lx aibv[1]:%016lx aisb:%016lx\n",
- get_imap(0)->aibv, get_imap(1)->aibv, *bucket->aisb);
-}
-
static struct resource *zpci_alloc_bus_resource(unsigned long start, unsigned long size,
unsigned long flags, int domain)
{
diff --git a/arch/s390/pci/pci_debug.c b/arch/s390/pci/pci_debug.c
index 771b82359af4..75c69b402e05 100644
--- a/arch/s390/pci/pci_debug.c
+++ b/arch/s390/pci/pci_debug.c
@@ -115,27 +115,6 @@ static const struct file_operations debugfs_pci_perf_fops = {
.release = single_release,
};
-static int pci_debug_show(struct seq_file *m, void *v)
-{
- struct zpci_dev *zdev = m->private;
-
- zpci_debug_info(zdev, m);
- return 0;
-}
-
-static int pci_debug_seq_open(struct inode *inode, struct file *filp)
-{
- return single_open(filp, pci_debug_show,
- file_inode(filp)->i_private);
-}
-
-static const struct file_operations debugfs_pci_debug_fops = {
- .open = pci_debug_seq_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
void zpci_debug_init_device(struct zpci_dev *zdev)
{
zdev->debugfs_dev = debugfs_create_dir(dev_name(&zdev->pdev->dev),
@@ -149,19 +128,11 @@ void zpci_debug_init_device(struct zpci_dev *zdev)
&debugfs_pci_perf_fops);
if (IS_ERR(zdev->debugfs_perf))
zdev->debugfs_perf = NULL;
-
- zdev->debugfs_debug = debugfs_create_file("debug",
- S_IFREG | S_IRUGO | S_IWUSR,
- zdev->debugfs_dev, zdev,
- &debugfs_pci_debug_fops);
- if (IS_ERR(zdev->debugfs_debug))
- zdev->debugfs_debug = NULL;
}
void zpci_debug_exit_device(struct zpci_dev *zdev)
{
debugfs_remove(zdev->debugfs_perf);
- debugfs_remove(zdev->debugfs_debug);
debugfs_remove(zdev->debugfs_dev);
}