*
* /proc interface for the dasd driver.
*
- * $Revision: 1.33 $
*/
-#include <linux/config.h>
#include <linux/ctype.h>
#include <linux/seq_file.h>
#include <linux/vmalloc.h>
static struct proc_dir_entry *dasd_devices_entry = NULL;
static struct proc_dir_entry *dasd_statistics_entry = NULL;
-static inline char *
+#ifdef CONFIG_DASD_PROFILE
+static char *
dasd_get_user_string(const char __user *user_buf, size_t user_len)
{
char *buffer;
buffer[user_len] = 0;
return buffer;
}
+#endif /* CONFIG_DASD_PROFILE */
static int
dasd_devices_show(struct seq_file *m, void *v)
{
struct dasd_device *device;
+ struct dasd_block *block;
char *substr;
device = dasd_device_from_devindex((unsigned long) v - 1);
if (IS_ERR(device))
return 0;
+ if (device->block)
+ block = device->block;
+ else {
+ dasd_put_device(device);
+ return 0;
+ }
/* Print device number. */
- seq_printf(m, "%s", device->cdev->dev.bus_id);
+ seq_printf(m, "%s", dev_name(&device->cdev->dev));
/* Print discipline string. */
if (device != NULL && device->discipline != NULL)
seq_printf(m, "(%s)", device->discipline->name);
else
seq_printf(m, "(none)");
/* Print kdev. */
- if (device->gdp)
+ if (block->gdp)
seq_printf(m, " at (%3d:%6d)",
- device->gdp->major, device->gdp->first_minor);
+ MAJOR(disk_devt(block->gdp)),
+ MINOR(disk_devt(block->gdp)));
else
seq_printf(m, " at (???:??????)");
/* Print device name. */
- if (device->gdp)
- seq_printf(m, " is %-8s", device->gdp->disk_name);
+ if (block->gdp)
+ seq_printf(m, " is %-8s", block->gdp->disk_name);
else
seq_printf(m, " is ????????");
/* Print devices features. */
case DASD_STATE_BASIC:
seq_printf(m, "basic");
break;
+ case DASD_STATE_UNFMT:
+ seq_printf(m, "unformatted");
+ break;
case DASD_STATE_READY:
case DASD_STATE_ONLINE:
seq_printf(m, "active ");
- if (dasd_check_blocksize(device->bp_block))
+ if (dasd_check_blocksize(block->bp_block))
seq_printf(m, "n/f ");
else
seq_printf(m,
"at blocksize: %d, %ld blocks, %ld MB",
- device->bp_block, device->blocks,
- ((device->bp_block >> 9) *
- device->blocks) >> 11);
+ block->bp_block, block->blocks,
+ ((block->bp_block >> 9) *
+ block->blocks) >> 11);
break;
default:
seq_printf(m, "no stat");
{
}
-static struct seq_operations dasd_devices_seq_ops = {
+static const struct seq_operations dasd_devices_seq_ops = {
.start = dasd_devices_start,
.next = dasd_devices_next,
.stop = dasd_devices_stop,
return seq_open(file, &dasd_devices_seq_ops);
}
-static struct file_operations dasd_devices_file_ops = {
+static const struct file_operations dasd_devices_file_ops = {
+ .owner = THIS_MODULE,
.open = dasd_devices_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release,
};
-static inline int
+static int
dasd_calc_metrics(char *page, char **start, off_t off,
int count, int *eof, int len)
{
return len;
}
-static inline char *
-dasd_statistics_array(char *str, int *array, int shift)
+#ifdef CONFIG_DASD_PROFILE
+static char *
+dasd_statistics_array(char *str, unsigned int *array, int factor)
{
int i;
for (i = 0; i < 32; i++) {
- str += sprintf(str, "%7d ", array[i] >> shift);
+ str += sprintf(str, "%7d ", array[i] / factor);
if (i == 15)
str += sprintf(str, "\n");
}
str += sprintf(str,"\n");
return str;
}
+#endif /* CONFIG_DASD_PROFILE */
static int
dasd_statistics_read(char *page, char **start, off_t off,
#ifdef CONFIG_DASD_PROFILE
struct dasd_profile_info_t *prof;
char *str;
- int shift;
+ int factor;
/* check for active profiling */
if (dasd_profile_level == DASD_PROFILE_OFF) {
prof = &dasd_global_profile;
/* prevent couter 'overflow' on output */
- for (shift = 0; (prof->dasd_io_reqs >> shift) > 9999999; shift++);
+ for (factor = 1; (prof->dasd_io_reqs / factor) > 9999999;
+ factor *= 10);
str = page;
str += sprintf(str, "%d dasd I/O requests\n", prof->dasd_io_reqs);
- str += sprintf(str, "with %d sectors(512B each)\n",
+ str += sprintf(str, "with %u sectors(512B each)\n",
prof->dasd_io_sects);
+ str += sprintf(str, "Scale Factor is %d\n", factor);
str += sprintf(str,
" __<4 ___8 __16 __32 __64 _128 "
" _256 _512 __1k __2k __4k __8k "
" __1G __2G __4G " " _>4G\n");
str += sprintf(str, "Histogram of sizes (512B secs)\n");
- str = dasd_statistics_array(str, prof->dasd_io_secs, shift);
+ str = dasd_statistics_array(str, prof->dasd_io_secs, factor);
str += sprintf(str, "Histogram of I/O times (microseconds)\n");
- str = dasd_statistics_array(str, prof->dasd_io_times, shift);
+ str = dasd_statistics_array(str, prof->dasd_io_times, factor);
str += sprintf(str, "Histogram of I/O times per sector\n");
- str = dasd_statistics_array(str, prof->dasd_io_timps, shift);
+ str = dasd_statistics_array(str, prof->dasd_io_timps, factor);
str += sprintf(str, "Histogram of I/O time till ssch\n");
- str = dasd_statistics_array(str, prof->dasd_io_time1, shift);
+ str = dasd_statistics_array(str, prof->dasd_io_time1, factor);
str += sprintf(str, "Histogram of I/O time between ssch and irq\n");
- str = dasd_statistics_array(str, prof->dasd_io_time2, shift);
+ str = dasd_statistics_array(str, prof->dasd_io_time2, factor);
str += sprintf(str, "Histogram of I/O time between ssch "
"and irq per sector\n");
- str = dasd_statistics_array(str, prof->dasd_io_time2ps, shift);
+ str = dasd_statistics_array(str, prof->dasd_io_time2ps, factor);
str += sprintf(str, "Histogram of I/O time between irq and end\n");
- str = dasd_statistics_array(str, prof->dasd_io_time3, shift);
+ str = dasd_statistics_array(str, prof->dasd_io_time3, factor);
str += sprintf(str, "# of req in chanq at enqueuing (1..32) \n");
- str = dasd_statistics_array(str, prof->dasd_io_nr_req, shift);
+ str = dasd_statistics_array(str, prof->dasd_io_nr_req, factor);
len = str - page;
#else
len = sprintf(page, "Statistics are not activated in this kernel\n");
#endif /* CONFIG_DASD_PROFILE */
}
+/*
+ * Create dasd proc-fs entries.
+ * In case creation failed, cleanup and return -ENOENT.
+ */
int
dasd_proc_init(void)
{
- dasd_proc_root_entry = proc_mkdir("dasd", &proc_root);
+ dasd_proc_root_entry = proc_mkdir("dasd", NULL);
+ if (!dasd_proc_root_entry)
+ goto out_nodasd;
dasd_proc_root_entry->owner = THIS_MODULE;
- dasd_devices_entry = create_proc_entry("devices",
- S_IFREG | S_IRUGO | S_IWUSR,
- dasd_proc_root_entry);
- dasd_devices_entry->proc_fops = &dasd_devices_file_ops;
- dasd_devices_entry->owner = THIS_MODULE;
+ dasd_devices_entry = proc_create("devices",
+ S_IFREG | S_IRUGO | S_IWUSR,
+ dasd_proc_root_entry,
+ &dasd_devices_file_ops);
+ if (!dasd_devices_entry)
+ goto out_nodevices;
dasd_statistics_entry = create_proc_entry("statistics",
S_IFREG | S_IRUGO | S_IWUSR,
dasd_proc_root_entry);
+ if (!dasd_statistics_entry)
+ goto out_nostatistics;
dasd_statistics_entry->read_proc = dasd_statistics_read;
dasd_statistics_entry->write_proc = dasd_statistics_write;
dasd_statistics_entry->owner = THIS_MODULE;
return 0;
+
+ out_nostatistics:
+ remove_proc_entry("devices", dasd_proc_root_entry);
+ out_nodevices:
+ remove_proc_entry("dasd", NULL);
+ out_nodasd:
+ return -ENOENT;
}
void
{
remove_proc_entry("devices", dasd_proc_root_entry);
remove_proc_entry("statistics", dasd_proc_root_entry);
- remove_proc_entry("dasd", &proc_root);
+ remove_proc_entry("dasd", NULL);
}