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 ccf05b7b60625d7da33245107480e1105cfbaf5f
Author: Kirill Tkhai <ktk...@virtuozzo.com>
Date: Fri Oct 1 19:38:38 2021 +0300
sched: Account task_group::start_time
Extracted from "Initial patch".
Signed-off-by: Kirill Tkhai <ktk...@virtuozzo.com>
(cherry picked from vz7 commit bad04073f185d257f6a3290523ca02c095837e8b)
Signed-off-by: Konstantin Khorenko <khore...@virtuozzo.com>
Rebase to vz8 notes:
* moved from struct timespec to u64 (nsec)
Cherry-picked from vz8 commit e4826d8be177 ("sched: Account
task_group::start_time"))
Followed ktime_get_boot_ns() -> ktime_get_boottime_ns() rename.
Signed-off-by: Nikita Yushchenko <nikita.yushche...@virtuozzo.com>
---
kernel/sched/core.c | 4 ++++
kernel/sched/sched.h | 3 +++
2 files changed, 7 insertions(+)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index a530d3cba26d..b164cd9de057 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -9178,6 +9178,7 @@ void __init sched_init(void)
#ifdef CONFIG_CFS_CPULIMIT
root_task_group.topmost_limited_ancestor = &root_task_group;
#endif
+ root_task_group.start_time = 0;
#endif /* CONFIG_CGROUP_SCHED */
for_each_possible_cpu(i) {
@@ -9559,6 +9560,9 @@ struct task_group *sched_create_group(struct task_group
*parent)
alloc_uclamp_sched_group(tg, parent);
+ /* start_time is saved CT0 uptime */
+ tg->start_time = ktime_get_boottime_ns();
+
return tg;
err:
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index 45b2cb7203ea..0a0ef82744bf 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -430,6 +430,9 @@ struct task_group {
struct autogroup *autogroup;
#endif
+ /* Monotonic time in nsecs: */
+ u64 start_time;
+
struct cfs_bandwidth cfs_bandwidth;
#ifdef CONFIG_UCLAMP_TASK_GROUP
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