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Date: Tue, 20 Jul 2021 13:13:06 +0000 From: SeongJae Park <sj38.park@...il.com> To: akpm@...ux-foundation.org Cc: SeongJae Park <sjpark@...zon.de>, Jonathan.Cameron@...wei.com, acme@...nel.org, alexander.shishkin@...ux.intel.com, amit@...nel.org, benh@...nel.crashing.org, brendanhiggins@...gle.com, corbet@....net, david@...hat.com, dwmw@...zon.com, elver@...gle.com, fan.du@...el.com, foersleo@...zon.de, greg@...ah.com, gthelen@...gle.com, guoju.fgj@...baba-inc.com, jgowans@...zon.com, joe@...ches.com, mgorman@...e.de, mheyne@...zon.de, minchan@...nel.org, mingo@...hat.com, namhyung@...nel.org, peterz@...radead.org, riel@...riel.com, rientjes@...gle.com, rostedt@...dmis.org, rppt@...nel.org, shakeelb@...gle.com, shuah@...nel.org, sieberf@...zon.com, sj38.park@...il.com, snu@...le79.org, vbabka@...e.cz, vdavydov.dev@...il.com, zgf574564920@...il.com, linux-damon@...zon.com, linux-mm@...ck.org, linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [RFC v3 12/15] mm/damon/dbgfs: Support watermarks From: SeongJae Park <sjpark@...zon.de> 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 <sjpark@...zon.de> --- mm/damon/dbgfs.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/mm/damon/dbgfs.c b/mm/damon/dbgfs.c index 2509c0b634b4..168bd6406a3f 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 %lu %u %u %u %lu %lu\n", + "%lu %lu %u %u %u %u %d %lu %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, @@ -237,6 +237,8 @@ static ssize_t sprint_schemes(struct damon_ctx *c, char *buf, ssize_t len) s->quota.weight_sz, s->quota.weight_nr_accesses, s->quota.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; @@ -317,18 +319,18 @@ 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_quota quota = {}; - 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 %lu %u %u %u%n", + "%lu %lu %u %u %u %u %u %lu %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, "a.ms, "a.sz, "a.reset_interval, "a.weight_sz, "a.weight_nr_accesses, - "a.weight_age, &parsed); - if (ret != 13) + "a.weight_age, &wmarks.metric, + &wmarks.interval, &wmarks.high, &wmarks.mid, + &wmarks.low, &parsed); + if (ret != 18) break; if (!damos_action_valid(action)) { pr_err("wrong action %d\n", action); -- 2.17.1
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