mirror of
https://github.com/Fishwaldo/Star64_linux.git
synced 2025-03-16 12:14:06 +00:00
mm/damon/sysfs-schemes: implement scheme region directory
Implement region directories under 'tried_regions' directory of each scheme DAMON sysfs directory. This directory will provide the address range, the monitored access frequency ('nr_accesses'), and the age of each DAMON region that corresponding DAMON-based operation scheme has tried to be applied. Note that this commit doesn't implement the code for filling the data but only the sysfs directory. Link: https://lkml.kernel.org/r/20221101220328.95765-4-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
parent
5181b75f43
commit
9277d0367b
1 changed files with 122 additions and 1 deletions
|
@ -9,18 +9,138 @@
|
|||
|
||||
#include "sysfs-common.h"
|
||||
|
||||
/*
|
||||
* scheme region directory
|
||||
*/
|
||||
|
||||
struct damon_sysfs_scheme_region {
|
||||
struct kobject kobj;
|
||||
struct damon_addr_range ar;
|
||||
unsigned int nr_accesses;
|
||||
unsigned int age;
|
||||
struct list_head list;
|
||||
};
|
||||
|
||||
static struct damon_sysfs_scheme_region *damon_sysfs_scheme_region_alloc(
|
||||
struct damon_region *region)
|
||||
{
|
||||
struct damon_sysfs_scheme_region *sysfs_region = kmalloc(
|
||||
sizeof(*sysfs_region), GFP_KERNEL);
|
||||
|
||||
if (!sysfs_region)
|
||||
return NULL;
|
||||
sysfs_region->kobj = (struct kobject){};
|
||||
sysfs_region->ar = region->ar;
|
||||
sysfs_region->nr_accesses = region->nr_accesses;
|
||||
sysfs_region->age = region->age;
|
||||
INIT_LIST_HEAD(&sysfs_region->list);
|
||||
return sysfs_region;
|
||||
}
|
||||
|
||||
static ssize_t start_show(struct kobject *kobj, struct kobj_attribute *attr,
|
||||
char *buf)
|
||||
{
|
||||
struct damon_sysfs_scheme_region *region = container_of(kobj,
|
||||
struct damon_sysfs_scheme_region, kobj);
|
||||
|
||||
return sysfs_emit(buf, "%lu\n", region->ar.start);
|
||||
}
|
||||
|
||||
static ssize_t end_show(struct kobject *kobj, struct kobj_attribute *attr,
|
||||
char *buf)
|
||||
{
|
||||
struct damon_sysfs_scheme_region *region = container_of(kobj,
|
||||
struct damon_sysfs_scheme_region, kobj);
|
||||
|
||||
return sysfs_emit(buf, "%lu\n", region->ar.end);
|
||||
}
|
||||
|
||||
static ssize_t nr_accesses_show(struct kobject *kobj,
|
||||
struct kobj_attribute *attr, char *buf)
|
||||
{
|
||||
struct damon_sysfs_scheme_region *region = container_of(kobj,
|
||||
struct damon_sysfs_scheme_region, kobj);
|
||||
|
||||
return sysfs_emit(buf, "%u\n", region->nr_accesses);
|
||||
}
|
||||
|
||||
static ssize_t age_show(struct kobject *kobj, struct kobj_attribute *attr,
|
||||
char *buf)
|
||||
{
|
||||
struct damon_sysfs_scheme_region *region = container_of(kobj,
|
||||
struct damon_sysfs_scheme_region, kobj);
|
||||
|
||||
return sysfs_emit(buf, "%u\n", region->age);
|
||||
}
|
||||
|
||||
static void damon_sysfs_scheme_region_release(struct kobject *kobj)
|
||||
{
|
||||
struct damon_sysfs_scheme_region *region = container_of(kobj,
|
||||
struct damon_sysfs_scheme_region, kobj);
|
||||
|
||||
list_del(®ion->list);
|
||||
kfree(region);
|
||||
}
|
||||
|
||||
static struct kobj_attribute damon_sysfs_scheme_region_start_attr =
|
||||
__ATTR_RO_MODE(start, 0400);
|
||||
|
||||
static struct kobj_attribute damon_sysfs_scheme_region_end_attr =
|
||||
__ATTR_RO_MODE(end, 0400);
|
||||
|
||||
static struct kobj_attribute damon_sysfs_scheme_region_nr_accesses_attr =
|
||||
__ATTR_RO_MODE(nr_accesses, 0400);
|
||||
|
||||
static struct kobj_attribute damon_sysfs_scheme_region_age_attr =
|
||||
__ATTR_RO_MODE(age, 0400);
|
||||
|
||||
static struct attribute *damon_sysfs_scheme_region_attrs[] = {
|
||||
&damon_sysfs_scheme_region_start_attr.attr,
|
||||
&damon_sysfs_scheme_region_end_attr.attr,
|
||||
&damon_sysfs_scheme_region_nr_accesses_attr.attr,
|
||||
&damon_sysfs_scheme_region_age_attr.attr,
|
||||
NULL,
|
||||
};
|
||||
ATTRIBUTE_GROUPS(damon_sysfs_scheme_region);
|
||||
|
||||
static struct kobj_type damon_sysfs_scheme_region_ktype = {
|
||||
.release = damon_sysfs_scheme_region_release,
|
||||
.sysfs_ops = &kobj_sysfs_ops,
|
||||
.default_groups = damon_sysfs_scheme_region_groups,
|
||||
};
|
||||
|
||||
/*
|
||||
* scheme regions directory
|
||||
*/
|
||||
|
||||
struct damon_sysfs_scheme_regions {
|
||||
struct kobject kobj;
|
||||
struct list_head regions_list;
|
||||
int nr_regions;
|
||||
};
|
||||
|
||||
static struct damon_sysfs_scheme_regions *
|
||||
damon_sysfs_scheme_regions_alloc(void)
|
||||
{
|
||||
return kzalloc(sizeof(struct damon_sysfs_scheme_regions), GFP_KERNEL);
|
||||
struct damon_sysfs_scheme_regions *regions = kmalloc(sizeof(*regions),
|
||||
GFP_KERNEL);
|
||||
|
||||
regions->kobj = (struct kobject){};
|
||||
INIT_LIST_HEAD(®ions->regions_list);
|
||||
regions->nr_regions = 0;
|
||||
return regions;
|
||||
}
|
||||
|
||||
static void damon_sysfs_scheme_regions_rm_dirs(
|
||||
struct damon_sysfs_scheme_regions *regions)
|
||||
{
|
||||
struct damon_sysfs_scheme_region *r, *next;
|
||||
|
||||
list_for_each_entry_safe(r, next, ®ions->regions_list, list) {
|
||||
/* release function deletes it from the list */
|
||||
kobject_put(&r->kobj);
|
||||
regions->nr_regions--;
|
||||
}
|
||||
}
|
||||
|
||||
static void damon_sysfs_scheme_regions_release(struct kobject *kobj)
|
||||
|
@ -837,6 +957,7 @@ static void damon_sysfs_scheme_rm_dirs(struct damon_sysfs_scheme *scheme)
|
|||
kobject_put(&scheme->quotas->kobj);
|
||||
kobject_put(&scheme->watermarks->kobj);
|
||||
kobject_put(&scheme->stats->kobj);
|
||||
damon_sysfs_scheme_regions_rm_dirs(scheme->tried_regions);
|
||||
kobject_put(&scheme->tried_regions->kobj);
|
||||
}
|
||||
|
||||
|
|
Loading…
Add table
Reference in a new issue