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authorTejun Heo <tj@kernel.org>2015-12-03 10:22:52 -0500
committerTejun Heo <tj@kernel.org>2015-12-03 10:22:52 -0500
commit8075b542cf9f5d8a6afd92b4a940e29a677a7510 (patch)
treec2075c5fa70b16d086871edaf94febd954fec073 /kernel/cpuset.c
parentd2b4365809060b256330a99289de9797a5dd6967 (diff)
parent67cde9c4938945b9510730c64e68d2f1dd7bc0aa (diff)
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Merge branch 'for-4.4-fixes' into for-4.5
Diffstat (limited to 'kernel/cpuset.c')
-rw-r--r--kernel/cpuset.c33
1 files changed, 21 insertions, 12 deletions
diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index c9ea63ff70a7..3e945fcd8179 100644
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -1433,15 +1433,16 @@ static int fmeter_getrate(struct fmeter *fmp)
static struct cpuset *cpuset_attach_old_cs;
/* Called by cgroups to determine if a cpuset is usable; cpuset_mutex held */
-static int cpuset_can_attach(struct cgroup_subsys_state *css,
- struct cgroup_taskset *tset)
+static int cpuset_can_attach(struct cgroup_taskset *tset)
{
- struct cpuset *cs = css_cs(css);
+ struct cgroup_subsys_state *css;
+ struct cpuset *cs;
struct task_struct *task;
int ret;
/* used later by cpuset_attach() */
- cpuset_attach_old_cs = task_cs(cgroup_taskset_first(tset));
+ cpuset_attach_old_cs = task_cs(cgroup_taskset_first(tset, &css));
+ cs = css_cs(css);
mutex_lock(&cpuset_mutex);
@@ -1451,7 +1452,7 @@ static int cpuset_can_attach(struct cgroup_subsys_state *css,
(cpumask_empty(cs->cpus_allowed) || nodes_empty(cs->mems_allowed)))
goto out_unlock;
- cgroup_taskset_for_each(task, tset) {
+ cgroup_taskset_for_each(task, css, tset) {
ret = task_can_attach(task, cs->cpus_allowed);
if (ret)
goto out_unlock;
@@ -1471,9 +1472,14 @@ out_unlock:
return ret;
}
-static void cpuset_cancel_attach(struct cgroup_subsys_state *css,
- struct cgroup_taskset *tset)
+static void cpuset_cancel_attach(struct cgroup_taskset *tset)
{
+ struct cgroup_subsys_state *css;
+ struct cpuset *cs;
+
+ cgroup_taskset_first(tset, &css);
+ cs = css_cs(css);
+
mutex_lock(&cpuset_mutex);
css_cs(css)->attach_in_progress--;
mutex_unlock(&cpuset_mutex);
@@ -1486,16 +1492,19 @@ static void cpuset_cancel_attach(struct cgroup_subsys_state *css,
*/
static cpumask_var_t cpus_attach;
-static void cpuset_attach(struct cgroup_subsys_state *css,
- struct cgroup_taskset *tset)
+static void cpuset_attach(struct cgroup_taskset *tset)
{
/* static buf protected by cpuset_mutex */
static nodemask_t cpuset_attach_nodemask_to;
struct task_struct *task;
struct task_struct *leader;
- struct cpuset *cs = css_cs(css);
+ struct cgroup_subsys_state *css;
+ struct cpuset *cs;
struct cpuset *oldcs = cpuset_attach_old_cs;
+ cgroup_taskset_first(tset, &css);
+ cs = css_cs(css);
+
mutex_lock(&cpuset_mutex);
/* prepare for attach */
@@ -1506,7 +1515,7 @@ static void cpuset_attach(struct cgroup_subsys_state *css,
guarantee_online_mems(cs, &cpuset_attach_nodemask_to);
- cgroup_taskset_for_each(task, tset) {
+ cgroup_taskset_for_each(task, css, tset) {
/*
* can_attach beforehand should guarantee that this doesn't
* fail. TODO: have a better way to handle failure here
@@ -1522,7 +1531,7 @@ static void cpuset_attach(struct cgroup_subsys_state *css,
* sleep and should be moved outside migration path proper.
*/
cpuset_attach_nodemask_to = cs->effective_mems;
- cgroup_taskset_for_each_leader(leader, tset) {
+ cgroup_taskset_for_each_leader(leader, css, tset) {
struct mm_struct *mm = get_task_mm(leader);
if (mm) {