diff options
Diffstat (limited to 'patches/next/mm-damon-sysfs-Add-a-file-for-simple-checking-memcg-.patch')
| -rw-r--r-- | patches/next/mm-damon-sysfs-Add-a-file-for-simple-checking-memcg-.patch | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/patches/next/mm-damon-sysfs-Add-a-file-for-simple-checking-memcg-.patch b/patches/next/mm-damon-sysfs-Add-a-file-for-simple-checking-memcg-.patch new file mode 100644 index 0000000..6fd1b1d --- /dev/null +++ b/patches/next/mm-damon-sysfs-Add-a-file-for-simple-checking-memcg-.patch @@ -0,0 +1,52 @@ +From a7ffb15d099b431ef67c49d369530bd5a6f48802 Mon Sep 17 00:00:00 2001 +From: SeongJae Park <sj@kernel.org> +Date: Fri, 18 Nov 2022 23:50:59 +0000 +Subject: [PATCH] mm/damon/sysfs: Add a file for simple checking memcg ids and + paths + +Signed-off-by: SeongJae Park <sj@kernel.org> +--- + mm/damon/sysfs.c | 26 ++++++++++++++++++++++++++ + 1 file changed, 26 insertions(+) + +diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c +index 6fee383bc0c5..bc6204d66755 100644 +--- a/mm/damon/sysfs.c ++++ b/mm/damon/sysfs.c +@@ -1885,7 +1885,33 @@ static void damon_sysfs_ui_dir_release(struct kobject *kobj) + kfree(container_of(kobj, struct damon_sysfs_ui_dir, kobj)); + } + ++static ssize_t debug_show(struct kobject *kobj, ++ struct kobj_attribute *attr, char *buf) ++{ ++#ifdef CONFIG_MEMCG ++ struct mem_cgroup *memcg; ++ char *path = kmalloc(sizeof(*path) * PATH_MAX, GFP_KERNEL); ++ ++ if (!path) ++ return -ENOMEM; ++ ++ for (memcg = mem_cgroup_iter(NULL, NULL, NULL); memcg; memcg = ++ mem_cgroup_iter(NULL, memcg, NULL)) { ++ cgroup_path(memcg->css.cgroup, path, PATH_MAX); ++ pr_info("id: %u, path: %s\n", mem_cgroup_id(memcg), path); ++ } ++ ++ kfree(path); ++#endif ++ ++ return 0; ++} ++ ++static struct kobj_attribute damon_sysfs_debug_attr = ++ __ATTR_RO_MODE(debug, 0400); ++ + static struct attribute *damon_sysfs_ui_dir_attrs[] = { ++ &damon_sysfs_debug_attr.attr, + NULL, + }; + ATTRIBUTE_GROUPS(damon_sysfs_ui_dir); +-- +2.39.2 + |