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-rw-r--r--include/linux/cgroup.h8
-rw-r--r--kernel/cgroup.c37
2 files changed, 22 insertions, 23 deletions
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index 4b38e2d6110d..c6c703f2486b 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -62,7 +62,7 @@ struct cgroup_subsys_state {
/* the parent css */
struct cgroup_subsys_state *parent;
- unsigned long flags;
+ unsigned int flags;
/* percpu_ref killing and RCU release */
struct rcu_head rcu_head;
@@ -185,7 +185,7 @@ struct cgroup {
u64 serial_nr;
/* the bitmask of subsystems enabled on the child cgroups */
- unsigned long child_subsys_mask;
+ unsigned int child_subsys_mask;
/* Private pointers for each registered subsystem */
struct cgroup_subsys_state __rcu *subsys[CGROUP_SUBSYS_COUNT];
@@ -312,7 +312,7 @@ struct cgroup_root {
struct kernfs_root *kf_root;
/* The bitmask of subsystems attached to this hierarchy */
- unsigned long subsys_mask;
+ unsigned int subsys_mask;
/* Unique id for this hierarchy. */
int hierarchy_id;
@@ -327,7 +327,7 @@ struct cgroup_root {
struct list_head root_list;
/* Hierarchy-specific flags */
- unsigned long flags;
+ unsigned int flags;
/* IDs for cgroups in this hierarchy */
struct idr cgroup_idr;
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 3873267c9ee3..21667f396a1e 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -181,7 +181,7 @@ static struct cftype cgroup_base_files[];
static void cgroup_put(struct cgroup *cgrp);
static int rebind_subsystems(struct cgroup_root *dst_root,
- unsigned long ss_mask);
+ unsigned int ss_mask);
static void cgroup_destroy_css_killed(struct cgroup *cgrp);
static int cgroup_destroy_locked(struct cgroup *cgrp);
static int create_css(struct cgroup *cgrp, struct cgroup_subsys *ss);
@@ -963,7 +963,7 @@ static struct cgroup *task_cgroup_from_root(struct task_struct *task,
* update of a tasks cgroup pointer by cgroup_attach_task()
*/
-static int cgroup_populate_dir(struct cgroup *cgrp, unsigned long subsys_mask);
+static int cgroup_populate_dir(struct cgroup *cgrp, unsigned int subsys_mask);
static struct kernfs_syscall_ops cgroup_kf_syscall_ops;
static const struct file_operations proc_cgroupstats_operations;
@@ -1079,7 +1079,7 @@ static void cgroup_rm_file(struct cgroup *cgrp, const struct cftype *cft)
* @cgrp: target cgroup
* @subsys_mask: mask of the subsystem ids whose files should be removed
*/
-static void cgroup_clear_dir(struct cgroup *cgrp, unsigned long subsys_mask)
+static void cgroup_clear_dir(struct cgroup *cgrp, unsigned int subsys_mask)
{
struct cgroup_subsys *ss;
int i;
@@ -1087,15 +1087,14 @@ static void cgroup_clear_dir(struct cgroup *cgrp, unsigned long subsys_mask)
for_each_subsys(ss, i) {
struct cftype *cfts;
- if (!test_bit(i, &subsys_mask))
+ if (!(subsys_mask & (1 << i)))
continue;
list_for_each_entry(cfts, &ss->cfts, node)
cgroup_addrm_files(cgrp, cfts, false);
}
}
-static int rebind_subsystems(struct cgroup_root *dst_root,
- unsigned long ss_mask)
+static int rebind_subsystems(struct cgroup_root *dst_root, unsigned int ss_mask)
{
struct cgroup_subsys *ss;
int ssid, i, ret;
@@ -1128,7 +1127,7 @@ static int rebind_subsystems(struct cgroup_root *dst_root,
* Just warn about it and continue.
*/
if (cgrp_dfl_root_visible) {
- pr_warn("failed to create files (%d) while rebinding 0x%lx to default root\n",
+ pr_warn("failed to create files (%d) while rebinding 0x%x to default root\n",
ret, ss_mask);
pr_warn("you may retry by moving them to a different hierarchy and unbinding\n");
}
@@ -1214,8 +1213,8 @@ static int cgroup_show_options(struct seq_file *seq,
}
struct cgroup_sb_opts {
- unsigned long subsys_mask;
- unsigned long flags;
+ unsigned int subsys_mask;
+ unsigned int flags;
char *release_agent;
bool cpuset_clone_children;
char *name;
@@ -1227,12 +1226,12 @@ static int parse_cgroupfs_options(char *data, struct cgroup_sb_opts *opts)
{
char *token, *o = data;
bool all_ss = false, one_ss = false;
- unsigned long mask = (unsigned long)-1;
+ unsigned int mask = -1U;
struct cgroup_subsys *ss;
int i;
#ifdef CONFIG_CPUSETS
- mask = ~(1UL << cpuset_cgrp_id);
+ mask = ~(1U << cpuset_cgrp_id);
#endif
memset(opts, 0, sizeof(*opts));
@@ -1313,7 +1312,7 @@ static int parse_cgroupfs_options(char *data, struct cgroup_sb_opts *opts)
/* Mutually exclusive option 'all' + subsystem name */
if (all_ss)
return -EINVAL;
- set_bit(i, &opts->subsys_mask);
+ opts->subsys_mask |= (1 << i);
one_ss = true;
break;
@@ -1342,7 +1341,7 @@ static int parse_cgroupfs_options(char *data, struct cgroup_sb_opts *opts)
if (all_ss || (!one_ss && !opts->none && !opts->name))
for_each_subsys(ss, i)
if (!ss->disabled)
- set_bit(i, &opts->subsys_mask);
+ opts->subsys_mask |= (1 << i);
/*
* We either have to specify by name or by subsystems. (So
@@ -1373,7 +1372,7 @@ static int cgroup_remount(struct kernfs_root *kf_root, int *flags, char *data)
int ret = 0;
struct cgroup_root *root = cgroup_root_from_kf(kf_root);
struct cgroup_sb_opts opts;
- unsigned long added_mask, removed_mask;
+ unsigned int added_mask, removed_mask;
if (root->flags & CGRP_ROOT_SANE_BEHAVIOR) {
pr_err("sane_behavior: remount is not allowed\n");
@@ -1398,7 +1397,7 @@ static int cgroup_remount(struct kernfs_root *kf_root, int *flags, char *data)
/* Don't allow flags or name to change at remount */
if (((opts.flags ^ root->flags) & CGRP_ROOT_OPTION_MASK) ||
(opts.name && strcmp(opts.name, root->name))) {
- pr_err("option or name mismatch, new: 0x%lx \"%s\", old: 0x%lx \"%s\"\n",
+ pr_err("option or name mismatch, new: 0x%x \"%s\", old: 0x%x \"%s\"\n",
opts.flags & CGRP_ROOT_OPTION_MASK, opts.name ?: "",
root->flags & CGRP_ROOT_OPTION_MASK, root->name);
ret = -EINVAL;
@@ -1522,7 +1521,7 @@ static void init_cgroup_root(struct cgroup_root *root,
set_bit(CGRP_CPUSET_CLONE_CHILDREN, &root->cgrp.flags);
}
-static int cgroup_setup_root(struct cgroup_root *root, unsigned long ss_mask)
+static int cgroup_setup_root(struct cgroup_root *root, unsigned int ss_mask)
{
LIST_HEAD(tmp_links);
struct cgroup *root_cgrp = &root->cgrp;
@@ -2507,7 +2506,7 @@ out_finish:
static int cgroup_subtree_control_write(struct cgroup_subsys_state *dummy_css,
struct cftype *cft, char *buffer)
{
- unsigned long enable_req = 0, disable_req = 0, enable, disable;
+ unsigned int enable_req = 0, disable_req = 0, enable, disable;
struct cgroup *cgrp = dummy_css->cgroup, *child;
struct cgroup_subsys *ss;
char *tok, *p;
@@ -3998,7 +3997,7 @@ static struct cftype cgroup_base_files[] = {
*
* On failure, no file is added.
*/
-static int cgroup_populate_dir(struct cgroup *cgrp, unsigned long subsys_mask)
+static int cgroup_populate_dir(struct cgroup *cgrp, unsigned int subsys_mask)
{
struct cgroup_subsys *ss;
int i, ret = 0;
@@ -4007,7 +4006,7 @@ static int cgroup_populate_dir(struct cgroup *cgrp, unsigned long subsys_mask)
for_each_subsys(ss, i) {
struct cftype *cfts;
- if (!test_bit(i, &subsys_mask))
+ if (!(subsys_mask & (1 << i)))
continue;
list_for_each_entry(cfts, &ss->cfts, node) {
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-18 04:21:56 +0000