TechPanelGM/kernel_xiaomi_sm8250
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

cgroup: Include dying leaders with live threads in PROCS iterations

Browse Source 
commit c03cd7738a83b13739f00546166969342c8ff014 upstream.

CSS_TASK_ITER_PROCS currently iterates live group leaders; however,
this means that a process with dying leader and live threads will be
skipped.  IOW, cgroup.procs might be empty while cgroup.threads isn't,
which is confusing to say the least.

Fix it by making cset track dying tasks and include dying leaders with
live threads in PROCS iteration.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-and-tested-by: Topi Miettinen <toiwoton@gmail.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tejun Heo
2019-05-31 10:38:58 -07:00
committed by Greg Kroah-Hartman
parent 370b9e6399
commit 4340d175b8
3 changed files with 39 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
include/linux/cgroup.h
View File

@@ -60,6 +60,7 @@ struct css_task_iter {
struct list_head *task_pos;
struct list_head *tasks_head;
struct list_head *mg_tasks_head;
struct list_head *dying_tasks_head;
struct css_set *cur_cset;
struct css_set *cur_dcset;