cgroup/rdma: add rdma.events to track resource limit exhaustion

Browse source

Add per-device hierarchical event counters to track when RDMA resource
limits are exceeded. The rdma.events file reports max event counts
propagated upward from the cgroup whose limit was hit to all ancestors.

This mirrors the design of pids.events, where events are attributed to
the cgroup that imposed the limit, not necessarily the cgroup where the
allocation was attempted. Userspace can monitor this file via
poll/epoll for real-time notification of resource exhaustion.

Signed-off-by: Tao Cui <cuitao@kylinos.cn>
Signed-off-by: Tejun Heo <tj@kernel.org>

...

This commit is contained in:

Tao Cui 2026-05-14 14:50:32 +08:00 • committed by Tejun Heo

parent c68095c4a4

commit 009bcbd0b2

2 changed files with 73 additions and 2 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

3

include/linux/cgroup_rdma.h

View file

72

kernel/cgroup/rdma.c

View file