diff options
| -rw-r--r-- | mm/damon/sysfs-schemes.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/mm/damon/sysfs-schemes.c b/mm/damon/sysfs-schemes.c index 50cf89dcd898..6d3462eb31f2 100644 --- a/mm/damon/sysfs-schemes.c +++ b/mm/damon/sysfs-schemes.c @@ -117,6 +117,7 @@ struct damon_sysfs_scheme_regions { struct kobject kobj; struct list_head regions_list; int nr_regions; + unsigned long total_bytes; }; static struct damon_sysfs_scheme_regions * @@ -128,9 +129,19 @@ damon_sysfs_scheme_regions_alloc(void) regions->kobj = (struct kobject){}; INIT_LIST_HEAD(®ions->regions_list); regions->nr_regions = 0; + regions->total_bytes = 0; return regions; } +static ssize_t total_bytes_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + struct damon_sysfs_scheme_regions *regions = container_of(kobj, + struct damon_sysfs_scheme_regions, kobj); + + return sysfs_emit(buf, "%lu\n", regions->total_bytes); +} + static void damon_sysfs_scheme_regions_rm_dirs( struct damon_sysfs_scheme_regions *regions) { @@ -148,7 +159,11 @@ static void damon_sysfs_scheme_regions_release(struct kobject *kobj) kfree(container_of(kobj, struct damon_sysfs_scheme_regions, kobj)); } +static struct kobj_attribute damon_sysfs_scheme_regions_total_bytes_attr = + __ATTR_RO_MODE(total_bytes, 0400); + static struct attribute *damon_sysfs_scheme_regions_attrs[] = { + &damon_sysfs_scheme_regions_total_bytes_attr.attr, NULL, }; ATTRIBUTE_GROUPS(damon_sysfs_scheme_regions); @@ -1648,6 +1663,7 @@ static int damon_sysfs_before_damos_apply(struct damon_ctx *ctx, return 0; sysfs_regions = sysfs_schemes->schemes_arr[schemes_idx]->tried_regions; + sysfs_regions->total_bytes += r->ar.end - r->ar.start; region = damon_sysfs_scheme_region_alloc(r); list_add_tail(®ion->list, &sysfs_regions->regions_list); sysfs_regions->nr_regions++; @@ -1678,6 +1694,7 @@ int damon_sysfs_schemes_clear_regions( sysfs_scheme = sysfs_schemes->schemes_arr[schemes_idx++]; damon_sysfs_scheme_regions_rm_dirs( sysfs_scheme->tried_regions); + sysfs_scheme->tried_regions->total_bytes = 0; } return 0; } |