github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-07-28 01:55:51 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

mm/damon/sysfs: implement probes dir

Browse Source 
Implement sysfs directory that can be used by the users to install data
probes.

Link: https://lore.kernel.org/20260518234119.97569-10-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
SeongJae Park 2026-05-18 16:40:57 -07:00 committed by Andrew Morton
parent 09acfaced2
commit 90a8322934
1 changed files with 46 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
mm/damon/sysfs.c
View File

@ -747,6 +747,35 @@ static const struct kobj_type damon_sysfs_intervals_ktype = {
.default_groups = damon_sysfs_intervals_groups,
};
/*
* probes directory
*/
struct damon_sysfs_probes {
struct kobject kobj;
};
static struct damon_sysfs_probes *damon_sysfs_probes_alloc(void)
{
return kzalloc_obj(struct damon_sysfs_probes);
}
static void damon_sysfs_probes_release(struct kobject *kobj)
{
kfree(container_of(kobj, struct damon_sysfs_probes, kobj));
}
static struct attribute *damon_sysfs_probes_attrs[] = {
NULL,
};
ATTRIBUTE_GROUPS(damon_sysfs_probes);
static const struct kobj_type damon_sysfs_probes_ktype = {
.release = damon_sysfs_probes_release,
.sysfs_ops = &kobj_sysfs_ops,
.default_groups = damon_sysfs_probes_groups,
};
/*
* monitoring_attrs directory
*/
@ -755,6 +784,7 @@ struct damon_sysfs_attrs {
struct kobject kobj;
struct damon_sysfs_intervals *intervals;
struct damon_sysfs_ul_range *nr_regions_range;
struct damon_sysfs_probes *probes;
};
static struct damon_sysfs_attrs *damon_sysfs_attrs_alloc(void)
@ -771,6 +801,7 @@ static int damon_sysfs_attrs_add_dirs(struct damon_sysfs_attrs *attrs)
{
struct damon_sysfs_intervals *intervals;
struct damon_sysfs_ul_range *nr_regions_range;
struct damon_sysfs_probes *probes;
int err;
intervals = damon_sysfs_intervals_alloc(5000, 100000, 60000000);
@ -799,8 +830,22 @@ static int damon_sysfs_attrs_add_dirs(struct damon_sysfs_attrs *attrs)
if (err)
goto put_nr_regions_intervals_out;
attrs->nr_regions_range = nr_regions_range;
probes = damon_sysfs_probes_alloc();
if (!probes) {
err = -ENOMEM;
goto put_nr_regions_intervals_out;
}
err = kobject_init_and_add(&probes->kobj,
&damon_sysfs_probes_ktype, &attrs->kobj, "probes");
if (err)
goto put_probes_out;
attrs->probes = probes;
return 0;
put_probes_out:
kobject_put(&probes->kobj);
attrs->probes = NULL;
put_nr_regions_intervals_out:
kobject_put(&nr_regions_range->kobj);
attrs->nr_regions_range = NULL;
@ -817,6 +862,7 @@ static void damon_sysfs_attrs_rm_dirs(struct damon_sysfs_attrs *attrs)
kobject_put(&attrs->nr_regions_range->kobj);
damon_sysfs_intervals_rm_dirs(attrs->intervals);
kobject_put(&attrs->intervals->kobj);
kobject_put(&attrs->probes->kobj);
}
static void damon_sysfs_attrs_release(struct kobject *kobj)