cgroup: pass around cgroup_subsys_state instead of cgroup in file methods
cgroup is currently in the process of transitioning to using struct
cgroup_subsys_state * as the primary handle instead of struct cgroup.
Please see the previous commit which converts the subsystem methods
for rationale.
This patch converts all cftype file operations to take @css instead of
@cgroup. cftypes for the cgroup core files don't have their subsytem
pointer set. These will automatically use the dummy_css added by the
previous patch and can be converted the same way.
Most subsystem conversions are straight forwards but there are some
interesting ones.
* freezer: update_if_frozen() is also converted to take @css instead
of @cgroup for consistency. This will make the code look simpler
too once iterators are converted to use css.
* memory/vmpressure: mem_cgroup_from_css() needs to be exported to
vmpressure while mem_cgroup_from_cont() can be made static.
Updated accordingly.
* cpu: cgroup_tg() doesn't have any user left. Removed.
* cpuacct: cgroup_ca() doesn't have any user left. Removed.
* hugetlb: hugetlb_cgroup_form_cgroup() doesn't have any user left.
Removed.
* net_cls: cgrp_cls_state() doesn't have any user left. Removed.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Li Zefan <lizefan@huawei.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Acked-by: Aristeu Rozanski <aris@redhat.com>
Acked-by: Daniel Wagner <daniel.wagner@bmw-carit.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: Matt Helsley <matthltc@us.ibm.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Steven Rostedt <rostedt@goodmis.org>
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index c049992..6ee4698 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -2235,34 +2235,38 @@
}
EXPORT_SYMBOL_GPL(cgroup_attach_task_all);
-static int cgroup_tasks_write(struct cgroup *cgrp, struct cftype *cft, u64 pid)
+static int cgroup_tasks_write(struct cgroup_subsys_state *css,
+ struct cftype *cft, u64 pid)
{
- return attach_task_by_pid(cgrp, pid, false);
+ return attach_task_by_pid(css->cgroup, pid, false);
}
-static int cgroup_procs_write(struct cgroup *cgrp, struct cftype *cft, u64 tgid)
+static int cgroup_procs_write(struct cgroup_subsys_state *css,
+ struct cftype *cft, u64 tgid)
{
- return attach_task_by_pid(cgrp, tgid, true);
+ return attach_task_by_pid(css->cgroup, tgid, true);
}
-static int cgroup_release_agent_write(struct cgroup *cgrp, struct cftype *cft,
- const char *buffer)
+static int cgroup_release_agent_write(struct cgroup_subsys_state *css,
+ struct cftype *cft, const char *buffer)
{
- BUILD_BUG_ON(sizeof(cgrp->root->release_agent_path) < PATH_MAX);
+ BUILD_BUG_ON(sizeof(css->cgroup->root->release_agent_path) < PATH_MAX);
if (strlen(buffer) >= PATH_MAX)
return -EINVAL;
- if (!cgroup_lock_live_group(cgrp))
+ if (!cgroup_lock_live_group(css->cgroup))
return -ENODEV;
mutex_lock(&cgroup_root_mutex);
- strcpy(cgrp->root->release_agent_path, buffer);
+ strcpy(css->cgroup->root->release_agent_path, buffer);
mutex_unlock(&cgroup_root_mutex);
mutex_unlock(&cgroup_mutex);
return 0;
}
-static int cgroup_release_agent_show(struct cgroup *cgrp, struct cftype *cft,
- struct seq_file *seq)
+static int cgroup_release_agent_show(struct cgroup_subsys_state *css,
+ struct cftype *cft, struct seq_file *seq)
{
+ struct cgroup *cgrp = css->cgroup;
+
if (!cgroup_lock_live_group(cgrp))
return -ENODEV;
seq_puts(seq, cgrp->root->release_agent_path);
@@ -2271,10 +2275,10 @@
return 0;
}
-static int cgroup_sane_behavior_show(struct cgroup *cgrp, struct cftype *cft,
- struct seq_file *seq)
+static int cgroup_sane_behavior_show(struct cgroup_subsys_state *css,
+ struct cftype *cft, struct seq_file *seq)
{
- seq_printf(seq, "%d\n", cgroup_sane_behavior(cgrp));
+ seq_printf(seq, "%d\n", cgroup_sane_behavior(css->cgroup));
return 0;
}
@@ -2292,10 +2296,10 @@
/* A buffer size big enough for numbers or short strings */
#define CGROUP_LOCAL_BUFFER_SIZE 64
-static ssize_t cgroup_write_X64(struct cgroup *cgrp, struct cftype *cft,
- struct file *file,
- const char __user *userbuf,
- size_t nbytes, loff_t *unused_ppos)
+static ssize_t cgroup_write_X64(struct cgroup_subsys_state *css,
+ struct cftype *cft, struct file *file,
+ const char __user *userbuf, size_t nbytes,
+ loff_t *unused_ppos)
{
char buffer[CGROUP_LOCAL_BUFFER_SIZE];
int retval = 0;
@@ -2313,22 +2317,22 @@
u64 val = simple_strtoull(strstrip(buffer), &end, 0);
if (*end)
return -EINVAL;
- retval = cft->write_u64(cgrp, cft, val);
+ retval = cft->write_u64(css, cft, val);
} else {
s64 val = simple_strtoll(strstrip(buffer), &end, 0);
if (*end)
return -EINVAL;
- retval = cft->write_s64(cgrp, cft, val);
+ retval = cft->write_s64(css, cft, val);
}
if (!retval)
retval = nbytes;
return retval;
}
-static ssize_t cgroup_write_string(struct cgroup *cgrp, struct cftype *cft,
- struct file *file,
- const char __user *userbuf,
- size_t nbytes, loff_t *unused_ppos)
+static ssize_t cgroup_write_string(struct cgroup_subsys_state *css,
+ struct cftype *cft, struct file *file,
+ const char __user *userbuf, size_t nbytes,
+ loff_t *unused_ppos)
{
char local_buffer[CGROUP_LOCAL_BUFFER_SIZE];
int retval = 0;
@@ -2351,7 +2355,7 @@
}
buffer[nbytes] = 0; /* nul-terminate */
- retval = cft->write_string(cgrp, cft, strstrip(buffer));
+ retval = cft->write_string(css, cft, strstrip(buffer));
if (!retval)
retval = nbytes;
out:
@@ -2361,60 +2365,60 @@
}
static ssize_t cgroup_file_write(struct file *file, const char __user *buf,
- size_t nbytes, loff_t *ppos)
+ size_t nbytes, loff_t *ppos)
{
+ struct cfent *cfe = __d_cfe(file->f_dentry);
struct cftype *cft = __d_cft(file->f_dentry);
- struct cgroup *cgrp = __d_cgrp(file->f_dentry->d_parent);
+ struct cgroup_subsys_state *css = cgroup_file_css(cfe);
if (cft->write)
- return cft->write(cgrp, cft, file, buf, nbytes, ppos);
+ return cft->write(css, cft, file, buf, nbytes, ppos);
if (cft->write_u64 || cft->write_s64)
- return cgroup_write_X64(cgrp, cft, file, buf, nbytes, ppos);
+ return cgroup_write_X64(css, cft, file, buf, nbytes, ppos);
if (cft->write_string)
- return cgroup_write_string(cgrp, cft, file, buf, nbytes, ppos);
+ return cgroup_write_string(css, cft, file, buf, nbytes, ppos);
if (cft->trigger) {
- int ret = cft->trigger(cgrp, (unsigned int)cft->private);
+ int ret = cft->trigger(css, (unsigned int)cft->private);
return ret ? ret : nbytes;
}
return -EINVAL;
}
-static ssize_t cgroup_read_u64(struct cgroup *cgrp, struct cftype *cft,
- struct file *file,
- char __user *buf, size_t nbytes,
- loff_t *ppos)
+static ssize_t cgroup_read_u64(struct cgroup_subsys_state *css,
+ struct cftype *cft, struct file *file,
+ char __user *buf, size_t nbytes, loff_t *ppos)
{
char tmp[CGROUP_LOCAL_BUFFER_SIZE];
- u64 val = cft->read_u64(cgrp, cft);
+ u64 val = cft->read_u64(css, cft);
int len = sprintf(tmp, "%llu\n", (unsigned long long) val);
return simple_read_from_buffer(buf, nbytes, ppos, tmp, len);
}
-static ssize_t cgroup_read_s64(struct cgroup *cgrp, struct cftype *cft,
- struct file *file,
- char __user *buf, size_t nbytes,
- loff_t *ppos)
+static ssize_t cgroup_read_s64(struct cgroup_subsys_state *css,
+ struct cftype *cft, struct file *file,
+ char __user *buf, size_t nbytes, loff_t *ppos)
{
char tmp[CGROUP_LOCAL_BUFFER_SIZE];
- s64 val = cft->read_s64(cgrp, cft);
+ s64 val = cft->read_s64(css, cft);
int len = sprintf(tmp, "%lld\n", (long long) val);
return simple_read_from_buffer(buf, nbytes, ppos, tmp, len);
}
static ssize_t cgroup_file_read(struct file *file, char __user *buf,
- size_t nbytes, loff_t *ppos)
+ size_t nbytes, loff_t *ppos)
{
+ struct cfent *cfe = __d_cfe(file->f_dentry);
struct cftype *cft = __d_cft(file->f_dentry);
- struct cgroup *cgrp = __d_cgrp(file->f_dentry->d_parent);
+ struct cgroup_subsys_state *css = cgroup_file_css(cfe);
if (cft->read)
- return cft->read(cgrp, cft, file, buf, nbytes, ppos);
+ return cft->read(css, cft, file, buf, nbytes, ppos);
if (cft->read_u64)
- return cgroup_read_u64(cgrp, cft, file, buf, nbytes, ppos);
+ return cgroup_read_u64(css, cft, file, buf, nbytes, ppos);
if (cft->read_s64)
- return cgroup_read_s64(cgrp, cft, file, buf, nbytes, ppos);
+ return cgroup_read_s64(css, cft, file, buf, nbytes, ppos);
return -EINVAL;
}
@@ -2433,16 +2437,16 @@
{
struct cfent *cfe = m->private;
struct cftype *cft = cfe->type;
- struct cgroup *cgrp = __d_cgrp(cfe->dentry->d_parent);
+ struct cgroup_subsys_state *css = cgroup_file_css(cfe);
if (cft->read_map) {
struct cgroup_map_cb cb = {
.fill = cgroup_map_add,
.state = m,
};
- return cft->read_map(cgrp, cft, &cb);
+ return cft->read_map(css, cft, &cb);
}
- return cft->read_seq_string(cgrp, cft, m);
+ return cft->read_seq_string(css, cft, m);
}
static const struct file_operations cgroup_seqfile_operations = {
@@ -3860,21 +3864,20 @@
return cgroup_pidlist_open(file, CGROUP_FILE_PROCS);
}
-static u64 cgroup_read_notify_on_release(struct cgroup *cgrp,
- struct cftype *cft)
+static u64 cgroup_read_notify_on_release(struct cgroup_subsys_state *css,
+ struct cftype *cft)
{
- return notify_on_release(cgrp);
+ return notify_on_release(css->cgroup);
}
-static int cgroup_write_notify_on_release(struct cgroup *cgrp,
- struct cftype *cft,
- u64 val)
+static int cgroup_write_notify_on_release(struct cgroup_subsys_state *css,
+ struct cftype *cft, u64 val)
{
- clear_bit(CGRP_RELEASABLE, &cgrp->flags);
+ clear_bit(CGRP_RELEASABLE, &css->cgroup->flags);
if (val)
- set_bit(CGRP_NOTIFY_ON_RELEASE, &cgrp->flags);
+ set_bit(CGRP_NOTIFY_ON_RELEASE, &css->cgroup->flags);
else
- clear_bit(CGRP_NOTIFY_ON_RELEASE, &cgrp->flags);
+ clear_bit(CGRP_NOTIFY_ON_RELEASE, &css->cgroup->flags);
return 0;
}
@@ -3972,9 +3975,10 @@
* Input must be in format '<event_fd> <control_fd> <args>'.
* Interpretation of args is defined by control file implementation.
*/
-static int cgroup_write_event_control(struct cgroup *cgrp, struct cftype *cft,
- const char *buffer)
+static int cgroup_write_event_control(struct cgroup_subsys_state *css,
+ struct cftype *cft, const char *buffer)
{
+ struct cgroup *cgrp = css->cgroup;
struct cgroup_event *event;
struct cgroup *cgrp_cfile;
unsigned int efd, cfd;
@@ -4082,20 +4086,19 @@
return ret;
}
-static u64 cgroup_clone_children_read(struct cgroup *cgrp,
- struct cftype *cft)
+static u64 cgroup_clone_children_read(struct cgroup_subsys_state *css,
+ struct cftype *cft)
{
- return test_bit(CGRP_CPUSET_CLONE_CHILDREN, &cgrp->flags);
+ return test_bit(CGRP_CPUSET_CLONE_CHILDREN, &css->cgroup->flags);
}
-static int cgroup_clone_children_write(struct cgroup *cgrp,
- struct cftype *cft,
- u64 val)
+static int cgroup_clone_children_write(struct cgroup_subsys_state *css,
+ struct cftype *cft, u64 val)
{
if (val)
- set_bit(CGRP_CPUSET_CLONE_CHILDREN, &cgrp->flags);
+ set_bit(CGRP_CPUSET_CLONE_CHILDREN, &css->cgroup->flags);
else
- clear_bit(CGRP_CPUSET_CLONE_CHILDREN, &cgrp->flags);
+ clear_bit(CGRP_CPUSET_CLONE_CHILDREN, &css->cgroup->flags);
return 0;
}
@@ -5585,17 +5588,19 @@
kfree(css);
}
-static u64 debug_taskcount_read(struct cgroup *cgrp, struct cftype *cft)
+static u64 debug_taskcount_read(struct cgroup_subsys_state *css,
+ struct cftype *cft)
{
- return cgroup_task_count(cgrp);
+ return cgroup_task_count(css->cgroup);
}
-static u64 current_css_set_read(struct cgroup *cgrp, struct cftype *cft)
+static u64 current_css_set_read(struct cgroup_subsys_state *css,
+ struct cftype *cft)
{
return (u64)(unsigned long)current->cgroups;
}
-static u64 current_css_set_refcount_read(struct cgroup *cgrp,
+static u64 current_css_set_refcount_read(struct cgroup_subsys_state *css,
struct cftype *cft)
{
u64 count;
@@ -5606,7 +5611,7 @@
return count;
}
-static int current_css_set_cg_links_read(struct cgroup *cgrp,
+static int current_css_set_cg_links_read(struct cgroup_subsys_state *css,
struct cftype *cft,
struct seq_file *seq)
{
@@ -5633,14 +5638,13 @@
}
#define MAX_TASKS_SHOWN_PER_CSS 25
-static int cgroup_css_links_read(struct cgroup *cgrp,
- struct cftype *cft,
- struct seq_file *seq)
+static int cgroup_css_links_read(struct cgroup_subsys_state *css,
+ struct cftype *cft, struct seq_file *seq)
{
struct cgrp_cset_link *link;
read_lock(&css_set_lock);
- list_for_each_entry(link, &cgrp->cset_links, cset_link) {
+ list_for_each_entry(link, &css->cgroup->cset_links, cset_link) {
struct css_set *cset = link->cset;
struct task_struct *task;
int count = 0;
@@ -5659,9 +5663,9 @@
return 0;
}
-static u64 releasable_read(struct cgroup *cgrp, struct cftype *cft)
+static u64 releasable_read(struct cgroup_subsys_state *css, struct cftype *cft)
{
- return test_bit(CGRP_RELEASABLE, &cgrp->flags);
+ return test_bit(CGRP_RELEASABLE, &css->cgroup->flags);
}
static struct cftype debug_files[] = {
diff --git a/kernel/cgroup_freezer.c b/kernel/cgroup_freezer.c
index f03a857..19613ba 100644
--- a/kernel/cgroup_freezer.c
+++ b/kernel/cgroup_freezer.c
@@ -245,7 +245,7 @@
/**
* update_if_frozen - update whether a cgroup finished freezing
- * @cgroup: cgroup of interest
+ * @css: css of interest
*
* Once FREEZING is initiated, transition to FROZEN is lazily updated by
* calling this function. If the current state is FREEZING but not FROZEN,
@@ -256,12 +256,12 @@
* update_if_frozen() on all descendants prior to invoking this function.
*
* Task states and freezer state might disagree while tasks are being
- * migrated into or out of @cgroup, so we can't verify task states against
+ * migrated into or out of @css, so we can't verify task states against
* @freezer state here. See freezer_attach() for details.
*/
-static void update_if_frozen(struct cgroup *cgroup)
+static void update_if_frozen(struct cgroup_subsys_state *css)
{
- struct freezer *freezer = cgroup_freezer(cgroup);
+ struct freezer *freezer = css_freezer(css);
struct cgroup *pos;
struct cgroup_iter it;
struct task_struct *task;
@@ -275,7 +275,7 @@
goto out_unlock;
/* are all (live) children frozen? */
- cgroup_for_each_child(pos, cgroup) {
+ cgroup_for_each_child(pos, css->cgroup) {
struct freezer *child = cgroup_freezer(pos);
if ((child->state & CGROUP_FREEZER_ONLINE) &&
@@ -284,9 +284,9 @@
}
/* are all tasks frozen? */
- cgroup_iter_start(cgroup, &it);
+ cgroup_iter_start(css->cgroup, &it);
- while ((task = cgroup_iter_next(cgroup, &it))) {
+ while ((task = cgroup_iter_next(css->cgroup, &it))) {
if (freezing(task)) {
/*
* freezer_should_skip() indicates that the task
@@ -301,12 +301,12 @@
freezer->state |= CGROUP_FROZEN;
out_iter_end:
- cgroup_iter_end(cgroup, &it);
+ cgroup_iter_end(css->cgroup, &it);
out_unlock:
spin_unlock_irq(&freezer->lock);
}
-static int freezer_read(struct cgroup *cgroup, struct cftype *cft,
+static int freezer_read(struct cgroup_subsys_state *css, struct cftype *cft,
struct seq_file *m)
{
struct cgroup *pos;
@@ -314,13 +314,13 @@
rcu_read_lock();
/* update states bottom-up */
- cgroup_for_each_descendant_post(pos, cgroup)
- update_if_frozen(pos);
- update_if_frozen(cgroup);
+ cgroup_for_each_descendant_post(pos, css->cgroup)
+ update_if_frozen(cgroup_css(pos, freezer_subsys_id));
+ update_if_frozen(css);
rcu_read_unlock();
- seq_puts(m, freezer_state_strs(cgroup_freezer(cgroup)->state));
+ seq_puts(m, freezer_state_strs(css_freezer(css)->state));
seq_putc(m, '\n');
return 0;
}
@@ -426,7 +426,7 @@
rcu_read_unlock();
}
-static int freezer_write(struct cgroup *cgroup, struct cftype *cft,
+static int freezer_write(struct cgroup_subsys_state *css, struct cftype *cft,
const char *buffer)
{
bool freeze;
@@ -438,20 +438,22 @@
else
return -EINVAL;
- freezer_change_state(cgroup_freezer(cgroup), freeze);
+ freezer_change_state(css_freezer(css), freeze);
return 0;
}
-static u64 freezer_self_freezing_read(struct cgroup *cgroup, struct cftype *cft)
+static u64 freezer_self_freezing_read(struct cgroup_subsys_state *css,
+ struct cftype *cft)
{
- struct freezer *freezer = cgroup_freezer(cgroup);
+ struct freezer *freezer = css_freezer(css);
return (bool)(freezer->state & CGROUP_FREEZING_SELF);
}
-static u64 freezer_parent_freezing_read(struct cgroup *cgroup, struct cftype *cft)
+static u64 freezer_parent_freezing_read(struct cgroup_subsys_state *css,
+ struct cftype *cft)
{
- struct freezer *freezer = cgroup_freezer(cgroup);
+ struct freezer *freezer = css_freezer(css);
return (bool)(freezer->state & CGROUP_FREEZING_PARENT);
}
diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index 8ce3fdc..89b76e1 100644
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -1603,9 +1603,10 @@
FILE_SPREAD_SLAB,
} cpuset_filetype_t;
-static int cpuset_write_u64(struct cgroup *cgrp, struct cftype *cft, u64 val)
+static int cpuset_write_u64(struct cgroup_subsys_state *css, struct cftype *cft,
+ u64 val)
{
- struct cpuset *cs = cgroup_cs(cgrp);
+ struct cpuset *cs = css_cs(css);
cpuset_filetype_t type = cft->private;
int retval = -ENODEV;
@@ -1650,9 +1651,10 @@
return retval;
}
-static int cpuset_write_s64(struct cgroup *cgrp, struct cftype *cft, s64 val)
+static int cpuset_write_s64(struct cgroup_subsys_state *css, struct cftype *cft,
+ s64 val)
{
- struct cpuset *cs = cgroup_cs(cgrp);
+ struct cpuset *cs = css_cs(css);
cpuset_filetype_t type = cft->private;
int retval = -ENODEV;
@@ -1676,10 +1678,10 @@
/*
* Common handling for a write to a "cpus" or "mems" file.
*/
-static int cpuset_write_resmask(struct cgroup *cgrp, struct cftype *cft,
- const char *buf)
+static int cpuset_write_resmask(struct cgroup_subsys_state *css,
+ struct cftype *cft, const char *buf)
{
- struct cpuset *cs = cgroup_cs(cgrp);
+ struct cpuset *cs = css_cs(css);
struct cpuset *trialcs;
int retval = -ENODEV;
@@ -1758,13 +1760,12 @@
return count;
}
-static ssize_t cpuset_common_file_read(struct cgroup *cgrp,
- struct cftype *cft,
- struct file *file,
- char __user *buf,
- size_t nbytes, loff_t *ppos)
+static ssize_t cpuset_common_file_read(struct cgroup_subsys_state *css,
+ struct cftype *cft, struct file *file,
+ char __user *buf, size_t nbytes,
+ loff_t *ppos)
{
- struct cpuset *cs = cgroup_cs(cgrp);
+ struct cpuset *cs = css_cs(css);
cpuset_filetype_t type = cft->private;
char *page;
ssize_t retval = 0;
@@ -1794,9 +1795,9 @@
return retval;
}
-static u64 cpuset_read_u64(struct cgroup *cgrp, struct cftype *cft)
+static u64 cpuset_read_u64(struct cgroup_subsys_state *css, struct cftype *cft)
{
- struct cpuset *cs = cgroup_cs(cgrp);
+ struct cpuset *cs = css_cs(css);
cpuset_filetype_t type = cft->private;
switch (type) {
case FILE_CPU_EXCLUSIVE:
@@ -1825,9 +1826,9 @@
return 0;
}
-static s64 cpuset_read_s64(struct cgroup *cgrp, struct cftype *cft)
+static s64 cpuset_read_s64(struct cgroup_subsys_state *css, struct cftype *cft)
{
- struct cpuset *cs = cgroup_cs(cgrp);
+ struct cpuset *cs = css_cs(css);
cpuset_filetype_t type = cft->private;
switch (type) {
case FILE_SCHED_RELAX_DOMAIN_LEVEL:
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 622b7ef..cc9a492 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -7088,12 +7088,6 @@
return css ? container_of(css, struct task_group, css) : NULL;
}
-/* return corresponding task_group object of a cgroup */
-static inline struct task_group *cgroup_tg(struct cgroup *cgrp)
-{
- return css_tg(cgroup_css(cgrp, cpu_cgroup_subsys_id));
-}
-
static struct cgroup_subsys_state *
cpu_cgroup_css_alloc(struct cgroup_subsys_state *parent_css)
{
@@ -7179,15 +7173,16 @@
}
#ifdef CONFIG_FAIR_GROUP_SCHED
-static int cpu_shares_write_u64(struct cgroup *cgrp, struct cftype *cftype,
- u64 shareval)
+static int cpu_shares_write_u64(struct cgroup_subsys_state *css,
+ struct cftype *cftype, u64 shareval)
{
- return sched_group_set_shares(cgroup_tg(cgrp), scale_load(shareval));
+ return sched_group_set_shares(css_tg(css), scale_load(shareval));
}
-static u64 cpu_shares_read_u64(struct cgroup *cgrp, struct cftype *cft)
+static u64 cpu_shares_read_u64(struct cgroup_subsys_state *css,
+ struct cftype *cft)
{
- struct task_group *tg = cgroup_tg(cgrp);
+ struct task_group *tg = css_tg(css);
return (u64) scale_load_down(tg->shares);
}
@@ -7309,26 +7304,28 @@
return cfs_period_us;
}
-static s64 cpu_cfs_quota_read_s64(struct cgroup *cgrp, struct cftype *cft)
+static s64 cpu_cfs_quota_read_s64(struct cgroup_subsys_state *css,
+ struct cftype *cft)
{
- return tg_get_cfs_quota(cgroup_tg(cgrp));
+ return tg_get_cfs_quota(css_tg(css));
}
-static int cpu_cfs_quota_write_s64(struct cgroup *cgrp, struct cftype *cftype,
- s64 cfs_quota_us)
+static int cpu_cfs_quota_write_s64(struct cgroup_subsys_state *css,
+ struct cftype *cftype, s64 cfs_quota_us)
{
- return tg_set_cfs_quota(cgroup_tg(cgrp), cfs_quota_us);
+ return tg_set_cfs_quota(css_tg(css), cfs_quota_us);
}
-static u64 cpu_cfs_period_read_u64(struct cgroup *cgrp, struct cftype *cft)
+static u64 cpu_cfs_period_read_u64(struct cgroup_subsys_state *css,
+ struct cftype *cft)
{
- return tg_get_cfs_period(cgroup_tg(cgrp));
+ return tg_get_cfs_period(css_tg(css));
}
-static int cpu_cfs_period_write_u64(struct cgroup *cgrp, struct cftype *cftype,
- u64 cfs_period_us)
+static int cpu_cfs_period_write_u64(struct cgroup_subsys_state *css,
+ struct cftype *cftype, u64 cfs_period_us)
{
- return tg_set_cfs_period(cgroup_tg(cgrp), cfs_period_us);
+ return tg_set_cfs_period(css_tg(css), cfs_period_us);
}
struct cfs_schedulable_data {
@@ -7409,10 +7406,10 @@
return ret;
}
-static int cpu_stats_show(struct cgroup *cgrp, struct cftype *cft,
+static int cpu_stats_show(struct cgroup_subsys_state *css, struct cftype *cft,
struct cgroup_map_cb *cb)
{
- struct task_group *tg = cgroup_tg(cgrp);
+ struct task_group *tg = css_tg(css);
struct cfs_bandwidth *cfs_b = &tg->cfs_bandwidth;
cb->fill(cb, "nr_periods", cfs_b->nr_periods);
@@ -7425,26 +7422,28 @@
#endif /* CONFIG_FAIR_GROUP_SCHED */
#ifdef CONFIG_RT_GROUP_SCHED
-static int cpu_rt_runtime_write(struct cgroup *cgrp, struct cftype *cft,
- s64 val)
+static int cpu_rt_runtime_write(struct cgroup_subsys_state *css,
+ struct cftype *cft, s64 val)
{
- return sched_group_set_rt_runtime(cgroup_tg(cgrp), val);
+ return sched_group_set_rt_runtime(css_tg(css), val);
}
-static s64 cpu_rt_runtime_read(struct cgroup *cgrp, struct cftype *cft)
+static s64 cpu_rt_runtime_read(struct cgroup_subsys_state *css,
+ struct cftype *cft)
{
- return sched_group_rt_runtime(cgroup_tg(cgrp));
+ return sched_group_rt_runtime(css_tg(css));
}
-static int cpu_rt_period_write_uint(struct cgroup *cgrp, struct cftype *cftype,
- u64 rt_period_us)
+static int cpu_rt_period_write_uint(struct cgroup_subsys_state *css,
+ struct cftype *cftype, u64 rt_period_us)
{
- return sched_group_set_rt_period(cgroup_tg(cgrp), rt_period_us);
+ return sched_group_set_rt_period(css_tg(css), rt_period_us);
}
-static u64 cpu_rt_period_read_uint(struct cgroup *cgrp, struct cftype *cft)
+static u64 cpu_rt_period_read_uint(struct cgroup_subsys_state *css,
+ struct cftype *cft)
{
- return sched_group_rt_period(cgroup_tg(cgrp));
+ return sched_group_rt_period(css_tg(css));
}
#endif /* CONFIG_RT_GROUP_SCHED */
diff --git a/kernel/sched/cpuacct.c b/kernel/sched/cpuacct.c
index 1b784d9..f64722f 100644
--- a/kernel/sched/cpuacct.c
+++ b/kernel/sched/cpuacct.c
@@ -38,12 +38,6 @@
return css ? container_of(css, struct cpuacct, css) : NULL;
}
-/* return cpu accounting group corresponding to this container */
-static inline struct cpuacct *cgroup_ca(struct cgroup *cgrp)
-{
- return css_ca(cgroup_css(cgrp, cpuacct_subsys_id));
-}
-
/* return cpu accounting group to which this task belongs */
static inline struct cpuacct *task_ca(struct task_struct *tsk)
{
@@ -138,9 +132,9 @@
}
/* return total cpu usage (in nanoseconds) of a group */
-static u64 cpuusage_read(struct cgroup *cgrp, struct cftype *cft)
+static u64 cpuusage_read(struct cgroup_subsys_state *css, struct cftype *cft)
{
- struct cpuacct *ca = cgroup_ca(cgrp);
+ struct cpuacct *ca = css_ca(css);
u64 totalcpuusage = 0;
int i;
@@ -150,10 +144,10 @@
return totalcpuusage;
}
-static int cpuusage_write(struct cgroup *cgrp, struct cftype *cftype,
- u64 reset)
+static int cpuusage_write(struct cgroup_subsys_state *css, struct cftype *cft,
+ u64 reset)
{
- struct cpuacct *ca = cgroup_ca(cgrp);
+ struct cpuacct *ca = css_ca(css);
int err = 0;
int i;
@@ -169,10 +163,10 @@
return err;
}
-static int cpuacct_percpu_seq_read(struct cgroup *cgroup, struct cftype *cft,
- struct seq_file *m)
+static int cpuacct_percpu_seq_read(struct cgroup_subsys_state *css,
+ struct cftype *cft, struct seq_file *m)
{
- struct cpuacct *ca = cgroup_ca(cgroup);
+ struct cpuacct *ca = css_ca(css);
u64 percpu;
int i;
@@ -189,10 +183,10 @@
[CPUACCT_STAT_SYSTEM] = "system",
};
-static int cpuacct_stats_show(struct cgroup *cgrp, struct cftype *cft,
- struct cgroup_map_cb *cb)
+static int cpuacct_stats_show(struct cgroup_subsys_state *css,
+ struct cftype *cft, struct cgroup_map_cb *cb)
{
- struct cpuacct *ca = cgroup_ca(cgrp);
+ struct cpuacct *ca = css_ca(css);
int cpu;
s64 val = 0;