[PATCH 05/15] mm/damon/dbgfs: Support quotas of schemes

From: SeongJae Park
Date: Tue Oct 19 2021 - 11:08:04 EST


This commit makes the debugfs interface of DAMON support the scheme
quotas by chaning the format of the input for the schemes file.

Signed-off-by: SeongJae Park <sj@xxxxxxxxxx>
---
mm/damon/dbgfs.c | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/mm/damon/dbgfs.c b/mm/damon/dbgfs.c
index a04bd50cc4c4..097e6745ba75 100644
--- a/mm/damon/dbgfs.c
+++ b/mm/damon/dbgfs.c
@@ -105,11 +105,14 @@ 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\n",
+ "%lu %lu %u %u %u %u %d %lu %lu %lu %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->stat_count, s->stat_sz);
+ s->action,
+ s->quota.ms, s->quota.sz,
+ s->quota.reset_interval,
+ s->stat_count, s->stat_sz);
if (!rc)
return -ENOMEM;

@@ -190,10 +193,11 @@ static struct damos **str_to_schemes(const char *str, ssize_t len,
while (pos < len && *nr_schemes < max_nr_schemes) {
struct damos_quota quota = {};

- ret = sscanf(&str[pos], "%lu %lu %u %u %u %u %u%n",
+ ret = sscanf(&str[pos], "%lu %lu %u %u %u %u %u %lu %lu %lu%n",
&min_sz, &max_sz, &min_nr_a, &max_nr_a,
- &min_age, &max_age, &action, &parsed);
- if (ret != 7)
+ &min_age, &max_age, &action, &quota.ms,
+ &quota.sz, &quota.reset_interval, &parsed);
+ if (ret != 10)
break;
if (!damos_action_valid(action)) {
pr_err("wrong action %d\n", action);
--
2.17.1