diff options
Diffstat (limited to 'kernel/cgroup')
| -rw-r--r-- | kernel/cgroup/cgroup.c | 27 | ||||
| -rw-r--r-- | kernel/cgroup/cpuset.c | 13 | ||||
| -rw-r--r-- | kernel/cgroup/pids.c | 4 | ||||
| -rw-r--r-- | kernel/cgroup/rdma.c | 5 | ||||
| -rw-r--r-- | kernel/cgroup/rstat.c | 10 |
5 files changed, 30 insertions, 29 deletions
diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c index cef98502b124..eef24a25bda7 100644 --- a/kernel/cgroup/cgroup.c +++ b/kernel/cgroup/cgroup.c @@ -197,7 +197,7 @@ static u64 css_serial_nr_next = 1; */ static u16 have_fork_callback __read_mostly; static u16 have_exit_callback __read_mostly; -static u16 have_free_callback __read_mostly; +static u16 have_release_callback __read_mostly; static u16 have_canfork_callback __read_mostly; /* cgroup namespace for init task */ @@ -3534,6 +3534,16 @@ static ssize_t cgroup_file_write(struct kernfs_open_file *of, char *buf, return ret ?: nbytes; } +static __poll_t cgroup_file_poll(struct kernfs_open_file *of, poll_table *pt) +{ + struct cftype *cft = of->kn->priv; + + if (cft->poll) + return cft->poll(of, pt); + + return kernfs_generic_poll(of, pt); +} + static void *cgroup_seqfile_start(struct seq_file *seq, loff_t *ppos) { return seq_cft(seq)->seq_start(seq, ppos); @@ -3572,6 +3582,7 @@ static struct kernfs_ops cgroup_kf_single_ops = { .open = cgroup_file_open, .release = cgroup_file_release, .write = cgroup_file_write, + .poll = cgroup_file_poll, .seq_show = cgroup_seqfile_show, }; @@ -3580,6 +3591,7 @@ static struct kernfs_ops cgroup_kf_ops = { .open = cgroup_file_open, .release = cgroup_file_release, .write = cgroup_file_write, + .poll = cgroup_file_poll, .seq_start = cgroup_seqfile_start, .seq_next = cgroup_seqfile_next, .seq_stop = cgroup_seqfile_stop, @@ -5314,7 +5326,7 @@ static void __init cgroup_init_subsys(struct cgroup_subsys *ss, bool early) have_fork_callback |= (bool)ss->fork << ss->id; have_exit_callback |= (bool)ss->exit << ss->id; - have_free_callback |= (bool)ss->free << ss->id; + have_release_callback |= (bool)ss->release << ss->id; have_canfork_callback |= (bool)ss->can_fork << ss->id; /* At system boot, before all subsystems have been @@ -5750,16 +5762,19 @@ void cgroup_exit(struct task_struct *tsk) } while_each_subsys_mask(); } -void cgroup_free(struct task_struct *task) +void cgroup_release(struct task_struct *task) { - struct css_set *cset = task_css_set(task); struct cgroup_subsys *ss; int ssid; - do_each_subsys_mask(ss, ssid, have_free_callback) { - ss->free(task); + do_each_subsys_mask(ss, ssid, have_release_callback) { + ss->release(task); } while_each_subsys_mask(); +} +void cgroup_free(struct task_struct *task) +{ + struct css_set *cset = task_css_set(task); put_css_set(cset); } diff --git a/kernel/cgroup/cpuset.c b/kernel/cgroup/cpuset.c index 479743db6c37..72afd55f70c6 100644 --- a/kernel/cgroup/cpuset.c +++ b/kernel/cgroup/cpuset.c @@ -203,19 +203,6 @@ static inline struct cpuset *parent_cs(struct cpuset *cs) return css_cs(cs->css.parent); } -#ifdef CONFIG_NUMA -static inline bool task_has_mempolicy(struct task_struct *task) -{ - return task->mempolicy; -} -#else -static inline bool task_has_mempolicy(struct task_struct *task) -{ - return false; -} -#endif - - /* bits in struct cpuset flags field */ typedef enum { CS_ONLINE, diff --git a/kernel/cgroup/pids.c b/kernel/cgroup/pids.c index 9829c67ebc0a..c9960baaa14f 100644 --- a/kernel/cgroup/pids.c +++ b/kernel/cgroup/pids.c @@ -247,7 +247,7 @@ static void pids_cancel_fork(struct task_struct *task) pids_uncharge(pids, 1); } -static void pids_free(struct task_struct *task) +static void pids_release(struct task_struct *task) { struct pids_cgroup *pids = css_pids(task_css(task, pids_cgrp_id)); @@ -342,7 +342,7 @@ struct cgroup_subsys pids_cgrp_subsys = { .cancel_attach = pids_cancel_attach, .can_fork = pids_can_fork, .cancel_fork = pids_cancel_fork, - .free = pids_free, + .release = pids_release, .legacy_cftypes = pids_files, .dfl_cftypes = pids_files, .threaded = true, diff --git a/kernel/cgroup/rdma.c b/kernel/cgroup/rdma.c index d3bbb757ee49..1d75ae7f1cb7 100644 --- a/kernel/cgroup/rdma.c +++ b/kernel/cgroup/rdma.c @@ -313,10 +313,8 @@ EXPORT_SYMBOL(rdmacg_try_charge); * If IB stack wish a device to participate in rdma cgroup resource * tracking, it must invoke this API to register with rdma cgroup before * any user space application can start using the RDMA resources. - * Returns 0 on success or EINVAL when table length given is beyond - * supported size. */ -int rdmacg_register_device(struct rdmacg_device *device) +void rdmacg_register_device(struct rdmacg_device *device) { INIT_LIST_HEAD(&device->dev_node); INIT_LIST_HEAD(&device->rpools); @@ -324,7 +322,6 @@ int rdmacg_register_device(struct rdmacg_device *device) mutex_lock(&rdmacg_mutex); list_add_tail(&device->dev_node, &rdmacg_devices); mutex_unlock(&rdmacg_mutex); - return 0; } EXPORT_SYMBOL(rdmacg_register_device); diff --git a/kernel/cgroup/rstat.c b/kernel/cgroup/rstat.c index d503d1a9007c..bb95a35e8c2d 100644 --- a/kernel/cgroup/rstat.c +++ b/kernel/cgroup/rstat.c @@ -87,7 +87,6 @@ static struct cgroup *cgroup_rstat_cpu_pop_updated(struct cgroup *pos, struct cgroup *root, int cpu) { struct cgroup_rstat_cpu *rstatc; - struct cgroup *parent; if (pos == root) return NULL; @@ -115,8 +114,8 @@ static struct cgroup *cgroup_rstat_cpu_pop_updated(struct cgroup *pos, * However, due to the way we traverse, @pos will be the first * child in most cases. The only exception is @root. */ - parent = cgroup_parent(pos); - if (parent && rstatc->updated_next) { + if (rstatc->updated_next) { + struct cgroup *parent = cgroup_parent(pos); struct cgroup_rstat_cpu *prstatc = cgroup_rstat_cpu(parent, cpu); struct cgroup_rstat_cpu *nrstatc; struct cgroup **nextp; @@ -140,9 +139,12 @@ static struct cgroup *cgroup_rstat_cpu_pop_updated(struct cgroup *pos, * updated stat. */ smp_mb(); + + return pos; } - return pos; + /* only happens for @root */ + return NULL; } /* see cgroup_rstat_flush() */ |