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mm/damon/lru_sort: use watermarks parameters generator macro

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This commit makes DAMON_LRU_SORT 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/20220913174449.50645-14-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 17:44:40 +00:00 committed by Andrew Morton
parent b324ee36e9
commit 6517d2d977
2 changed files with 12 additions and 56 deletions
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64
mm/damon/lru_sort.c
View File

@ -90,44 +90,14 @@ module_param(quota_ms, 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_LRU_SORT 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_LRU_SORT becomes inactive, so it does nothing but periodically
* checks the watermarks. 200 (20%) by default.
*/
static unsigned long wmarks_high __read_mostly = 200;
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_LRU_SORT becomes active, so starts the monitoring
* and the LRU-lists sorting. 150 (15%) by default.
*/
static unsigned long wmarks_mid __read_mostly = 150;
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_LRU_SORT becomes inactive, so it does nothing but periodically checks
* the watermarks. 50 (5%) by default.
*/
static unsigned long wmarks_low __read_mostly = 50;
module_param(wmarks_low, ulong, 0600);
struct damos_watermarks damon_lru_sort_wmarks = {
.metric = DAMOS_WMARK_FREE_MEM_RATE,
.interval = 5000000, /* 5 seconds */
.high = 200, /* 20 percent */
.mid = 150, /* 15 percent */
.low = 50, /* 5 percent */
};
DEFINE_DAMON_MODULES_WMARKS_PARAMS(damon_lru_sort_wmarks);
static struct damon_attrs damon_lru_sort_mon_attrs = {
.sample_interval = 5000, /* 5 ms */
@ -242,13 +212,6 @@ static struct damos *damon_lru_sort_new_hot_scheme(unsigned int hot_thres)
.min_age_region = 0,
.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 LRU-lists sorting of hot pages for more than half
@ -270,7 +233,7 @@ static struct damos *damon_lru_sort_new_hot_scheme(unsigned int hot_thres)
/* under the quota. */
&quota,
/* (De)activate this according to the watermarks. */
&wmarks);
&damon_lru_sort_wmarks);
}
/* Create a DAMON-based operation scheme for cold memory regions */
@ -287,13 +250,6 @@ static struct damos *damon_lru_sort_new_cold_scheme(unsigned int cold_thres)
.min_age_region = cold_thres,
.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 LRU-lists sorting of cold pages for more than
@ -316,7 +272,7 @@ static struct damos *damon_lru_sort_new_cold_scheme(unsigned int cold_thres)
/* under the quota. */
&quota,
/* (De)activate this according to the watermarks. */
&wmarks);
&damon_lru_sort_wmarks);
}
static int damon_lru_sort_apply_parameters(void)

4
mm/damon/modules-common.h
View File

@ -18,8 +18,8 @@
0600);
#define DEFINE_DAMON_MODULES_WMARKS_PARAMS(wmarks) \
module_param_named(wmarks_interval, wmarks->interval, ulong, \
module_param_named(wmarks_interval, wmarks.interval, ulong, \
0600); \
module_param_named(wmarks_high, wmarks.high, ulong, 0600); \
module_param_named(wmarks_mid, wmarks.mid, ulong, 0600); \
module_param_named(wmarks_low, wmarks.lowulong, 0600);
module_param_named(wmarks_low, wmarks.low, ulong, 0600);