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mm/damon/reclaim: use watermarks parameters generator macro

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This commit makes DAMON_RECLAIM to generate the module parameters for
DAMOS watermarks using the generator macro to simplify the code and reduce
duplicates.

Link: https://lkml.kernel.org/r/20220913174449.50645-15-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
SeongJae Park 2022-09-13 17:44:41 +00:00 committed by Andrew Morton
parent 6517d2d977
commit 34f47ea688
1 changed files with 9 additions and 47 deletions
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56
mm/damon/reclaim.c
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@ -91,45 +91,14 @@ module_param(quota_sz, ulong, 0600);
static unsigned long quota_reset_interval_ms __read_mostly = 1000;
module_param(quota_reset_interval_ms, ulong, 0600);
/*
* The watermarks check time interval in microseconds.
*
* Minimal time to wait before checking the watermarks, when DAMON_RECLAIM is
* enabled but inactive due to its watermarks rule. 5 seconds by default.
*/
static unsigned long wmarks_interval __read_mostly = 5000000;
module_param(wmarks_interval, ulong, 0600);
/*
* Free memory rate (per thousand) for the high watermark.
*
* If free memory of the system in bytes per thousand bytes is higher than
* this, DAMON_RECLAIM becomes inactive, so it does nothing but periodically
* checks the watermarks. 500 (50%) by default.
*/
static unsigned long wmarks_high __read_mostly = 500;
module_param(wmarks_high, ulong, 0600);
/*
* Free memory rate (per thousand) for the middle watermark.
*
* If free memory of the system in bytes per thousand bytes is between this and
* the low watermark, DAMON_RECLAIM becomes active, so starts the monitoring
* and the reclaiming. 400 (40%) by default.
*/
static unsigned long wmarks_mid __read_mostly = 400;
module_param(wmarks_mid, ulong, 0600);
/*
* Free memory rate (per thousand) for the low watermark.
*
* If free memory of the system in bytes per thousand bytes is lower than this,
* DAMON_RECLAIM becomes inactive, so it does nothing but periodically checks
* the watermarks. In the case, the system falls back to the LRU-based page
* granularity reclamation logic. 200 (20%) by default.
*/
static unsigned long wmarks_low __read_mostly = 200;
module_param(wmarks_low, ulong, 0600);
struct damos_watermarks damon_reclaim_wmarks = {
.metric = DAMOS_WMARK_FREE_MEM_RATE,
.interval = 5000000, /* 5 seconds */
.high = 500, /* 50 percent */
.mid = 400, /* 40 percent */
.low = 200, /* 20 percent */
};
DEFINE_DAMON_MODULES_WMARKS_PARAMS(damon_reclaim_wmarks);
static struct damon_attrs damon_reclaim_mon_attrs = {
.sample_interval = 5000, /* 5 ms */
@ -214,13 +183,6 @@ static struct damos *damon_reclaim_new_scheme(void)
damon_reclaim_mon_attrs.aggr_interval,
.max_age_region = UINT_MAX,
};
struct damos_watermarks wmarks = {
.metric = DAMOS_WMARK_FREE_MEM_RATE,
.interval = wmarks_interval,
.high = wmarks_high,
.mid = wmarks_mid,
.low = wmarks_low,
};
struct damos_quota quota = {
/*
* Do not try reclamation for more than quota_ms milliseconds
@ -242,7 +204,7 @@ static struct damos *damon_reclaim_new_scheme(void)
/* under the quota. */
&quota,
/* (De)activate this according to the watermarks. */
&wmarks);
&damon_reclaim_wmarks);
}
static int damon_reclaim_apply_parameters(void)