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sgi-gru: add statistics to the GRU context management functions

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Add statistics to the GRU context management functions.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jack Steiner
2009-04-02 16:59:06 -07:00
committed by Linus Torvalds
parent a24e5e1caf
commit e56484da3a
3 changed files with 59 additions and 0 deletions
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39
drivers/misc/sgi-gru/gruprocfs.c
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@@ -122,6 +122,30 @@ static ssize_t statistics_write(struct file *file, const char __user *userbuf,
return count;
}
static int mcs_statistics_show(struct seq_file *s, void *p)
{
int op;
unsigned long total, count, max;
static char *id[] = {"cch_allocate", "cch_start", "cch_interrupt",
"cch_interrupt_sync", "cch_deallocate", "tgh_invalidate"};
for (op = 0; op < mcsop_last; op++) {
count = atomic_long_read(&mcs_op_statistics[op].count);
total = atomic_long_read(&mcs_op_statistics[op].total);
max = mcs_op_statistics[op].max;
seq_printf(s, "%-20s%12ld%12ld%12ld\n", id[op], count,
count ? total / count : 0, max);
}
return 0;
}
static ssize_t mcs_statistics_write(struct file *file,
const char __user *userbuf, size_t count, loff_t *data)
{
memset(mcs_op_statistics, 0, sizeof(mcs_op_statistics));
return count;
}
static int options_show(struct seq_file *s, void *p)
{
seq_printf(s, "0x%lx\n", gru_options);
@@ -137,6 +161,7 @@ static ssize_t options_write(struct file *file, const char __user *userbuf,
if (copy_from_user
(buf, userbuf, count < sizeof(buf) ? count : sizeof(buf)))
return -EFAULT;
buf[count - 1] = '\0';
if (!strict_strtoul(buf, 10, &val))
gru_options = val;
@@ -233,6 +258,11 @@ static int statistics_open(struct inode *inode, struct file *file)
return single_open(file, statistics_show, NULL);
}
static int mcs_statistics_open(struct inode *inode, struct file *file)
{
return single_open(file, mcs_statistics_show, NULL);
}
static int options_open(struct inode *inode, struct file *file)
{
return single_open(file, options_show, NULL);
@@ -257,6 +287,14 @@ static const struct file_operations statistics_fops = {
.release = single_release,
};
static const struct file_operations mcs_statistics_fops = {
.open = mcs_statistics_open,
.read = seq_read,
.write = mcs_statistics_write,
.llseek = seq_lseek,
.release = single_release,
};
static const struct file_operations options_fops = {
.open = options_open,
.read = seq_read,
@@ -285,6 +323,7 @@ static struct proc_entry {
struct proc_dir_entry *entry;
} proc_files[] = {
{"statistics", 0644, &statistics_fops},
{"mcs_statistics", 0644, &mcs_statistics_fops},
{"debug_options", 0644, &options_fops},
{"cch_status", 0444, &cch_fops},
{"gru_status", 0444, &gru_fops},