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authorSeongJae Park <sj@kernel.org>2022-09-13 20:44:32 +0300
committerAndrew Morton <akpm@linux-foundation.org>2022-10-04 00:03:10 +0300
commitcbeaa77b044938cfe91818821ece6b0b1511e967 (patch)
treee29224edf924d78632e8af0dc2b081e28825e862 /mm/damon
parent70e0c1d1bf945328915f52f7132b2d6ee8f25d46 (diff)
downloadlinux-cbeaa77b044938cfe91818821ece6b0b1511e967.tar.xz
mm/damon/core: use a dedicated struct for monitoring attributes
DAMON monitoring attributes are directly defined as fields of 'struct damon_ctx'. This makes 'struct damon_ctx' a little long and complicated. This commit defines and uses a struct, 'struct damon_attrs', which is dedicated for only the monitoring attributes to make the purpose of the five values clearer and simplify 'struct damon_ctx'. Link: https://lkml.kernel.org/r/20220913174449.50645-6-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/damon')
-rw-r--r--mm/damon/core.c34
-rw-r--r--mm/damon/dbgfs.c6
-rw-r--r--mm/damon/ops-common.c4
-rw-r--r--mm/damon/vaddr.c4
4 files changed, 24 insertions, 24 deletions
diff --git a/mm/damon/core.c b/mm/damon/core.c
index 6d9f4c2dee35..bbd4c2d991dd 100644
--- a/mm/damon/core.c
+++ b/mm/damon/core.c
@@ -382,17 +382,17 @@ struct damon_ctx *damon_new_ctx(void)
if (!ctx)
return NULL;
- ctx->sample_interval = 5 * 1000;
- ctx->aggr_interval = 100 * 1000;
- ctx->ops_update_interval = 60 * 1000 * 1000;
+ ctx->attrs.sample_interval = 5 * 1000;
+ ctx->attrs.aggr_interval = 100 * 1000;
+ ctx->attrs.ops_update_interval = 60 * 1000 * 1000;
ktime_get_coarse_ts64(&ctx->last_aggregation);
ctx->last_ops_update = ctx->last_aggregation;
mutex_init(&ctx->kdamond_lock);
- ctx->min_nr_regions = 10;
- ctx->max_nr_regions = 1000;
+ ctx->attrs.min_nr_regions = 10;
+ ctx->attrs.max_nr_regions = 1000;
INIT_LIST_HEAD(&ctx->adaptive_targets);
INIT_LIST_HEAD(&ctx->schemes);
@@ -448,11 +448,11 @@ int damon_set_attrs(struct damon_ctx *ctx, unsigned long sample_int,
if (min_nr_reg > max_nr_reg)
return -EINVAL;
- ctx->sample_interval = sample_int;
- ctx->aggr_interval = aggr_int;
- ctx->ops_update_interval = ops_upd_int;
- ctx->min_nr_regions = min_nr_reg;
- ctx->max_nr_regions = max_nr_reg;
+ ctx->attrs.sample_interval = sample_int;
+ ctx->attrs.aggr_interval = aggr_int;
+ ctx->attrs.ops_update_interval = ops_upd_int;
+ ctx->attrs.min_nr_regions = min_nr_reg;
+ ctx->attrs.max_nr_regions = max_nr_reg;
return 0;
}
@@ -507,8 +507,8 @@ static unsigned long damon_region_sz_limit(struct damon_ctx *ctx)
sz += r->ar.end - r->ar.start;
}
- if (ctx->min_nr_regions)
- sz /= ctx->min_nr_regions;
+ if (ctx->attrs.min_nr_regions)
+ sz /= ctx->attrs.min_nr_regions;
if (sz < DAMON_MIN_REGION)
sz = DAMON_MIN_REGION;
@@ -657,7 +657,7 @@ static bool damon_check_reset_time_interval(struct timespec64 *baseline,
static bool kdamond_aggregate_interval_passed(struct damon_ctx *ctx)
{
return damon_check_reset_time_interval(&ctx->last_aggregation,
- ctx->aggr_interval);
+ ctx->attrs.aggr_interval);
}
/*
@@ -1016,12 +1016,12 @@ static void kdamond_split_regions(struct damon_ctx *ctx)
damon_for_each_target(t, ctx)
nr_regions += damon_nr_regions(t);
- if (nr_regions > ctx->max_nr_regions / 2)
+ if (nr_regions > ctx->attrs.max_nr_regions / 2)
return;
/* Maybe the middle of the region has different access frequency */
if (last_nr_regions == nr_regions &&
- nr_regions < ctx->max_nr_regions / 3)
+ nr_regions < ctx->attrs.max_nr_regions / 3)
nr_subregions = 3;
damon_for_each_target(t, ctx)
@@ -1039,7 +1039,7 @@ static void kdamond_split_regions(struct damon_ctx *ctx)
static bool kdamond_need_update_operations(struct damon_ctx *ctx)
{
return damon_check_reset_time_interval(&ctx->last_ops_update,
- ctx->ops_update_interval);
+ ctx->attrs.ops_update_interval);
}
/*
@@ -1188,7 +1188,7 @@ static int kdamond_fn(void *data)
continue;
}
- kdamond_usleep(ctx->sample_interval);
+ kdamond_usleep(ctx->attrs.sample_interval);
if (ctx->ops.check_accesses)
max_nr_accesses = ctx->ops.check_accesses(ctx);
diff --git a/mm/damon/dbgfs.c b/mm/damon/dbgfs.c
index 1422037cedd2..74e7542af6d3 100644
--- a/mm/damon/dbgfs.c
+++ b/mm/damon/dbgfs.c
@@ -55,9 +55,9 @@ static ssize_t dbgfs_attrs_read(struct file *file,
mutex_lock(&ctx->kdamond_lock);
ret = scnprintf(kbuf, ARRAY_SIZE(kbuf), "%lu %lu %lu %lu %lu\n",
- ctx->sample_interval, ctx->aggr_interval,
- ctx->ops_update_interval, ctx->min_nr_regions,
- ctx->max_nr_regions);
+ ctx->attrs.sample_interval, ctx->attrs.aggr_interval,
+ ctx->attrs.ops_update_interval,
+ ctx->attrs.min_nr_regions, ctx->attrs.max_nr_regions);
mutex_unlock(&ctx->kdamond_lock);
return simple_read_from_buffer(buf, count, ppos, kbuf, ret);
diff --git a/mm/damon/ops-common.c b/mm/damon/ops-common.c
index f599838b5f64..9310df72e1c5 100644
--- a/mm/damon/ops-common.c
+++ b/mm/damon/ops-common.c
@@ -99,10 +99,10 @@ int damon_hot_score(struct damon_ctx *c, struct damon_region *r,
unsigned int age_weight = s->quota.weight_age;
int hotness;
- max_nr_accesses = c->aggr_interval / c->sample_interval;
+ max_nr_accesses = c->attrs.aggr_interval / c->attrs.sample_interval;
freq_subscore = r->nr_accesses * DAMON_MAX_SUBSCORE / max_nr_accesses;
- age_in_sec = (unsigned long)r->age * c->aggr_interval / 1000000;
+ age_in_sec = (unsigned long)r->age * c->attrs.aggr_interval / 1000000;
for (age_in_log = 0; age_in_log < DAMON_MAX_AGE_IN_LOG && age_in_sec;
age_in_log++, age_in_sec >>= 1)
;
diff --git a/mm/damon/vaddr.c b/mm/damon/vaddr.c
index c2c08c1b316b..0eae47bd9ccb 100644
--- a/mm/damon/vaddr.c
+++ b/mm/damon/vaddr.c
@@ -251,8 +251,8 @@ static void __damon_va_init_regions(struct damon_ctx *ctx,
for (i = 0; i < 3; i++)
sz += regions[i].end - regions[i].start;
- if (ctx->min_nr_regions)
- sz /= ctx->min_nr_regions;
+ if (ctx->attrs.min_nr_regions)
+ sz /= ctx->attrs.min_nr_regions;
if (sz < DAMON_MIN_REGION)
sz = DAMON_MIN_REGION;