This is a note to let you know that I've just added the patch titled
cgroup: Remove steal time from usage_usec
to the 6.12-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
cgroup-remove-steal-time-from-usage_usec.patch
and it can be found in the queue-6.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit c9f5884e4506a93d1e20919c20081f94c2c9ff25
Author: Muhammad Adeel <Muhammad.Adeel@xxxxxxx>
Date: Fri Feb 7 14:24:32 2025 +0000
cgroup: Remove steal time from usage_usec
[ Upstream commit db5fd3cf8bf41b84b577b8ad5234ea95f327c9be ]
The CPU usage time is the time when user, system or both are using the CPU.
Steal time is the time when CPU is waiting to be run by the Hypervisor. It
should not be added to the CPU usage time, hence removing it from the
usage_usec entry.
Fixes: 936f2a70f2077 ("cgroup: add cpu.stat file to root cgroup")
Acked-by: Axel Busch <axel.busch@xxxxxxx>
Acked-by: Michal Koutný <mkoutny@xxxxxxxx>
Signed-off-by: Muhammad Adeel <muhammad.adeel@xxxxxxx>
Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/kernel/cgroup/rstat.c b/kernel/cgroup/rstat.c
index a06b452724118..ce295b73c0a36 100644
--- a/kernel/cgroup/rstat.c
+++ b/kernel/cgroup/rstat.c
@@ -586,7 +586,6 @@ static void root_cgroup_cputime(struct cgroup_base_stat *bstat)
cputime->sum_exec_runtime += user;
cputime->sum_exec_runtime += sys;
- cputime->sum_exec_runtime += cpustat[CPUTIME_STEAL];
#ifdef CONFIG_SCHED_CORE
bstat->forceidle_sum += cpustat[CPUTIME_FORCEIDLE];
