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[S390] seq_file: convert drivers/s390/
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Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Alexey Dobriyan authored and Martin Schwidefsky committed Feb 26, 2010
1 parent 618708f commit 34b9243
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Showing 2 changed files with 122 additions and 145 deletions.
109 changes: 50 additions & 59 deletions drivers/s390/block/dasd_proc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -165,99 +165,82 @@ static const struct file_operations dasd_devices_file_ops = {
.release = seq_release,
};

static int
dasd_calc_metrics(char *page, char **start, off_t off,
int count, int *eof, int len)
{
len = (len > off) ? len - off : 0;
if (len > count)
len = count;
if (len < count)
*eof = 1;
*start = page + off;
return len;
}

#ifdef CONFIG_DASD_PROFILE
static char *
dasd_statistics_array(char *str, unsigned int *array, int factor)
static void dasd_statistics_array(struct seq_file *m, unsigned int *array, int factor)
{
int i;

for (i = 0; i < 32; i++) {
str += sprintf(str, "%7d ", array[i] / factor);
seq_printf(m, "%7d ", array[i] / factor);
if (i == 15)
str += sprintf(str, "\n");
seq_putc(m, '\n');
}
str += sprintf(str,"\n");
return str;
seq_putc(m, '\n');
}
#endif /* CONFIG_DASD_PROFILE */

static int
dasd_statistics_read(char *page, char **start, off_t off,
int count, int *eof, void *data)
static int dasd_stats_proc_show(struct seq_file *m, void *v)
{
unsigned long len;
#ifdef CONFIG_DASD_PROFILE
struct dasd_profile_info_t *prof;
char *str;
int factor;

/* check for active profiling */
if (dasd_profile_level == DASD_PROFILE_OFF) {
len = sprintf(page, "Statistics are off - they might be "
seq_printf(m, "Statistics are off - they might be "
"switched on using 'echo set on > "
"/proc/dasd/statistics'\n");
return dasd_calc_metrics(page, start, off, count, eof, len);
return 0;
}

prof = &dasd_global_profile;
/* prevent counter 'overflow' on output */
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 %u sectors(512B each)\n",
seq_printf(m, "%d dasd I/O requests\n", prof->dasd_io_reqs);
seq_printf(m, "with %u sectors(512B each)\n",
prof->dasd_io_sects);
str += sprintf(str, "Scale Factor is %d\n", factor);
str += sprintf(str,
seq_printf(m, "Scale Factor is %d\n", factor);
seq_printf(m,
" __<4 ___8 __16 __32 __64 _128 "
" _256 _512 __1k __2k __4k __8k "
" _16k _32k _64k 128k\n");
str += sprintf(str,
seq_printf(m,
" _256 _512 __1M __2M __4M __8M "
" _16M _32M _64M 128M 256M 512M "
" __1G __2G __4G " " _>4G\n");

str += sprintf(str, "Histogram of sizes (512B secs)\n");
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, factor);
str += sprintf(str, "Histogram of I/O times per sector\n");
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, factor);
str += sprintf(str, "Histogram of I/O time between ssch and irq\n");
str = dasd_statistics_array(str, prof->dasd_io_time2, factor);
str += sprintf(str, "Histogram of I/O time between ssch "
seq_printf(m, "Histogram of sizes (512B secs)\n");
dasd_statistics_array(m, prof->dasd_io_secs, factor);
seq_printf(m, "Histogram of I/O times (microseconds)\n");
dasd_statistics_array(m, prof->dasd_io_times, factor);
seq_printf(m, "Histogram of I/O times per sector\n");
dasd_statistics_array(m, prof->dasd_io_timps, factor);
seq_printf(m, "Histogram of I/O time till ssch\n");
dasd_statistics_array(m, prof->dasd_io_time1, factor);
seq_printf(m, "Histogram of I/O time between ssch and irq\n");
dasd_statistics_array(m, prof->dasd_io_time2, factor);
seq_printf(m, "Histogram of I/O time between ssch "
"and irq per sector\n");
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, factor);
str += sprintf(str, "# of req in chanq at enqueuing (1..32) \n");
str = dasd_statistics_array(str, prof->dasd_io_nr_req, factor);
len = str - page;
dasd_statistics_array(m, prof->dasd_io_time2ps, factor);
seq_printf(m, "Histogram of I/O time between irq and end\n");
dasd_statistics_array(m, prof->dasd_io_time3, factor);
seq_printf(m, "# of req in chanq at enqueuing (1..32) \n");
dasd_statistics_array(m, prof->dasd_io_nr_req, factor);
#else
len = sprintf(page, "Statistics are not activated in this kernel\n");
seq_printf(m, "Statistics are not activated in this kernel\n");
#endif
return dasd_calc_metrics(page, start, off, count, eof, len);
return 0;
}

static int
dasd_statistics_write(struct file *file, const char __user *user_buf,
unsigned long user_len, void *data)
static int dasd_stats_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, dasd_stats_proc_show, NULL);
}

static ssize_t dasd_stats_proc_write(struct file *file,
const char __user *user_buf, size_t user_len, loff_t *pos)
{
#ifdef CONFIG_DASD_PROFILE
char *buffer, *str;
Expand Down Expand Up @@ -308,6 +291,15 @@ dasd_statistics_write(struct file *file, const char __user *user_buf,
#endif /* CONFIG_DASD_PROFILE */
}

static const struct file_operations dasd_stats_proc_fops = {
.owner = THIS_MODULE,
.open = dasd_stats_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.write = dasd_stats_proc_write,
};

/*
* Create dasd proc-fs entries.
* In case creation failed, cleanup and return -ENOENT.
Expand All @@ -324,13 +316,12 @@ dasd_proc_init(void)
&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);
dasd_statistics_entry = proc_create("statistics",
S_IFREG | S_IRUGO | S_IWUSR,
dasd_proc_root_entry,
&dasd_stats_proc_fops);
if (!dasd_statistics_entry)
goto out_nostatistics;
dasd_statistics_entry->read_proc = dasd_statistics_read;
dasd_statistics_entry->write_proc = dasd_statistics_write;
return 0;

out_nostatistics:
Expand Down
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