From: SeongJae Park <sjpark@xxxxxxxxx>
This commit allows DAMON debugfs interface users set the prioritization
weights by putting three more numbers to the 'schemes' file.
Signed-off-by: SeongJae Park <sjpark@xxxxxxxxx>
---
mm/damon/dbgfs.c | 16 +++++++++++-----
1 file changed, 11 insertions(+), 5 deletions(-)
diff --git a/mm/damon/dbgfs.c b/mm/damon/dbgfs.c
index ea6d4fdb57fa..b90287b1e576 100644
--- a/mm/damon/dbgfs.c
+++ b/mm/damon/dbgfs.c
@@ -227,11 +227,14 @@ static ssize_t sprint_schemes(struct damon_ctx *c, char *buf, ssize_t len)
damon_for_each_scheme(s, c) {
rc = scnprintf(&buf[written], len - written,
- "%lu %lu %u %u %u %u %d %lu %lu %lu %lu\n",
+ "%lu %lu %u %u %u %u %d %lu %lu %u %u %u %lu %lu\n",
s->min_sz_region, s->max_sz_region,
s->min_nr_accesses, s->max_nr_accesses,
s->min_age_region, s->max_age_region,
s->action, s->limit.sz, s->limit.ms,
+ s->limit.weight_sz,
+ s->limit.weight_nr_accesses,
+ s->limit.weight_age,
s->stat_count, s->stat_sz);
if (!rc)
return -ENOMEM;
@@ -313,11 +316,14 @@ static struct damos **str_to_schemes(const char *str, ssize_t len,
while (pos < len && *nr_schemes < max_nr_schemes) {
struct damos_speed_limit limit = {};
- ret = sscanf(&str[pos], "%lu %lu %u %u %u %u %u %lu %lu%n",
+ ret = sscanf(&str[pos],
+ "%lu %lu %u %u %u %u %u %lu %lu %u %u %u%n",
&min_sz, &max_sz, &min_nr_a, &max_nr_a,
&min_age, &max_age, &action, &limit.sz,
- &limit.ms, &parsed);
- if (ret != 9)
+ &limit.ms, &limit.weight_sz,
+ &limit.weight_nr_accesses, &limit.weight_age,
+ &parsed);
+ if (ret != 12)
break;
if (!damos_action_valid(action)) {
pr_err("wrong action %d\n", action);
@@ -1141,7 +1147,7 @@ static ssize_t dbgfs_monitor_on_write(struct file *file,
static ssize_t dbgfs_version_read(struct file *file,
char __user *buf, size_t count, loff_t *ppos)
{
- return simple_read_from_buffer(buf, count, ppos, "1\n", 2);
+ return simple_read_from_buffer(buf, count, ppos, "2\n", 2);
}
static const struct file_operations mk_contexts_fops = {
--
2.17.1
