davidlt
/
kernel-ark
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

mm/damon/dbgfs: support watermarks 

This updates DAMON debugfs interface to support the watermarks based
schemes activation.  For this, now 'schemes' file receives five more
values.

Link: https://lkml.kernel.org/r/20211019150731.16699-13-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Amit Shah <amit@kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: David Rientjes <rientjes@google.com>
Cc: David Woodhouse <dwmw@amazon.com>
Cc: Greg Thelen <gthelen@google.com>
Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Leonard Foerster <foersleo@amazon.de>
Cc: Marco Elver <elver@google.com>
Cc: Markus Boehme <markubo@amazon.de>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
SeongJae Park 2021-11-05 13:47:50 -07:00 committed by Linus Torvalds
parent ee801b7dd7
commit ae666a6ddd
1 changed files with 9 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
mm/damon/dbgfs.c
View File

@ -105,7 +105,7 @@ 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,
@ -115,6 +115,8 @@ 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;
@ -195,18 +197,18 @@ 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, &quota.ms,
&quota.sz, &quota.reset_interval,
&quota.weight_sz, &quota.weight_nr_accesses,
&quota.weight_age, &parsed);
if (ret != 13)
&quota.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);