[RFC PATCH 11/13] mm/damon/dbgfs: Support watermarks
From: <hidden>
Date: 2021-05-31 15:03:27
Also in:
linux-mm, lkml
Subsystem:
damon, memory management, the rest · Maintainers:
SeongJae Park, Andrew Morton, Linus Torvalds
From: SeongJae Park <redacted> This commit updates DAMON debugfs interface to support the watermarks based schemes activation. For this, now 'schemes' file receives five more values. Signed-off-by: SeongJae Park <redacted> --- mm/damon/dbgfs.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/mm/damon/dbgfs.c b/mm/damon/dbgfs.c
index 1680fb1be8e1..768ef3eb9550 100644
--- a/mm/damon/dbgfs.c
+++ b/mm/damon/dbgfs.c@@ -227,7 +227,7 @@ 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 %u %u %u %lu %lu\n", + "%lu %lu %u %u %u %u %d %lu %lu %u %u %u %d %lu %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,
@@ -235,6 +235,8 @@ static ssize_t sprint_schemes(struct damon_ctx *c, char *buf, ssize_t len) s->limit.weight_sz, s->limit.weight_nr_accesses, s->limit.weight_age, + s->wmarks.metric, s->wmarks.interval, + s->wmarks.high, s->wmarks.mid, s->wmarks.low, s->stat_count, s->stat_sz); if (!rc) return -ENOMEM;
@@ -315,18 +317,18 @@ static struct damos **str_to_schemes(const char *str, ssize_t len, *nr_schemes = 0; while (pos < len && *nr_schemes < max_nr_schemes) { struct damos_speed_limit limit = {}; - struct damos_watermarks wmarks = { - .metric = DAMOS_WMARK_NONE, - }; + struct damos_watermarks wmarks; ret = sscanf(&str[pos], - "%lu %lu %u %u %u %u %u %lu %lu %u %u %u%n", + "%lu %lu %u %u %u %u %u %lu %lu %u %u %u %u %lu %lu %lu %lu%n", &min_sz, &max_sz, &min_nr_a, &max_nr_a, &min_age, &max_age, &action, &limit.sz, &limit.ms, &limit.weight_sz, &limit.weight_nr_accesses, &limit.weight_age, + &wmarks.metric, &wmarks.interval, + &wmarks.high, &wmarks.mid, &wmarks.low, &parsed); - if (ret != 12) + if (ret != 17) break; if (!damos_action_valid(action)) { pr_err("wrong action %d\n", action);
--
2.17.1