The commit is pushed to "branch-rh9-5.14.vz9.1.x-ovz" and will appear at
https://src.openvz.org/scm/ovz/vzkernel.git
after ark-5.14
------>
commit d90bfa85d4258bd9016955e5d02cd7e61a714e70
Author: Kirill Tkhai <ktk...@virtuozzo.com>
Date: Fri Sep 24 14:49:32 2021 +0300
sched: Split tg_set_cfs_bandwidth() and export default_cfs_period()
This is needed for CONFIG_CFS_CPULIMIT.
Signed-off-by: Kirill Tkhai <ktk...@virtuozzo.com>
https://jira.sw.ru/browse/PSBM-133986
(cherry picked from commit dcff66d4a02c9fc56536b3e002b4dee3e9efd3fa)
Signed-off-by: Alexander Mikhalitsyn <alexander.mikhalit...@virtuozzo.com>
---
kernel/sched/core.c | 20 +++++++++++++++-----
kernel/sched/fair.c | 9 ---------
kernel/sched/sched.h | 8 ++++++++
3 files changed, 23 insertions(+), 14 deletions(-)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index d824282e942b..2159edeb0e02 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -9969,7 +9969,7 @@ static const u64 max_cfs_runtime = MAX_BW * NSEC_PER_USEC;
static int __cfs_schedulable(struct task_group *tg, u64 period, u64 runtime);
-static int tg_set_cfs_bandwidth(struct task_group *tg, u64 period, u64 quota,
+static int __tg_set_cfs_bandwidth(struct task_group *tg, u64 period, u64 quota,
u64 burst)
{
int i, ret = 0, runtime_enabled, runtime_was_enabled;
@@ -10008,11 +10008,9 @@ static int tg_set_cfs_bandwidth(struct task_group *tg,
u64 period, u64 quota,
* Prevent race between setting of cfs_rq->runtime_enabled and
* unthrottle_offline_cfs_rqs().
*/
- get_online_cpus();
- mutex_lock(&cfs_constraints_mutex);
ret = __cfs_schedulable(tg, period, quota);
if (ret)
- goto out_unlock;
+ goto out;
runtime_enabled = quota != RUNTIME_INF;
runtime_was_enabled = cfs_b->quota != RUNTIME_INF;
@@ -10050,7 +10048,19 @@ static int tg_set_cfs_bandwidth(struct task_group *tg,
u64 period, u64 quota,
}
if (runtime_was_enabled && !runtime_enabled)
cfs_bandwidth_usage_dec();
-out_unlock:
+out:
+
+ return ret;
+}
+
+static int tg_set_cfs_bandwidth(struct task_group *tg, u64 period, u64 quota,
+ u64 burst)
+{
+ int ret;
+
+ get_online_cpus();
+ mutex_lock(&cfs_constraints_mutex);
+ ret = __tg_set_cfs_bandwidth(tg, period, quota, burst);
mutex_unlock(&cfs_constraints_mutex);
put_online_cpus();
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index c42ff00885c0..266862d677d8 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -4737,15 +4737,6 @@ void cfs_bandwidth_usage_inc(void) {}
void cfs_bandwidth_usage_dec(void) {}
#endif /* CONFIG_JUMP_LABEL */
-/*
- * default period for cfs group bandwidth.
- * default: 0.1s, units: nanoseconds
- */
-static inline u64 default_cfs_period(void)
-{
- return 100000000ULL;
-}
-
static inline u64 sched_cfs_bandwidth_slice(void)
{
return (u64)sysctl_sched_cfs_bandwidth_slice * NSEC_PER_USEC;
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index 9cddbc9920f8..45b2cb7203ea 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -158,6 +158,14 @@ extern void call_trace_sched_update_nr_running(struct rq
*rq, int count);
* Single value that denotes runtime == period, ie unlimited time.
*/
#define RUNTIME_INF ((u64)~0ULL)
+/*
+ * default period for cfs group bandwidth.
+ * default: 0.1s, units: nanoseconds
+ */
+static inline u64 default_cfs_period(void)
+{
+ return 100000000ULL;
+}
static inline int idle_policy(int policy)
{
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