kernel/linux.git/include/linux/cgroup_rdma.h, branch v7.2-rc1

cgroup/rdma: add rdma.events.local for per-cgroup allocation failure attribution

2026-05-14T21:22:55+00:00

Add per-cgroup local event counters to track RDMA resource limit exhaustion from the perspective of individual cgroups. The rdma.events.local file reports two per-resource counters: - max: number of times this cgroup's limit was the one that blocked an allocation in the subtree - alloc_fail: number of allocation attempts originating from this cgroup that failed due to an ancestor's limit This mirrors the design of pids.events.local, where events are attributed to the cgroup that imposed the limit, not necessarily the cgroup where the allocation was attempted. Also extend rdma.events with a hierarchical alloc_fail counter that tracks allocation failures propagating upward from the requesting cgroup, complementing the existing max counter, so that rdma.events and rdma.events.local share the same output format. Signed-off-by: Tao Cui Signed-off-by: Tejun Heo

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

2026-05-14T21:22:55+00:00

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 Signed-off-by: Tejun Heo

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 451

2019-06-19T15:09:08+00:00

Based on 1 normalized pattern(s): this file is subject to the terms and conditions of version 2 of the gnu general public license see the file copying in the main directory of the linux distribution for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 5 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Enrico Weigelt Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081200.872755311@linutronix.de Signed-off-by: Greg Kroah-Hartman

IB/core: Simplify rdma cgroup registration

2019-01-18T20:43:10+00:00

RDMA cgroup registration routine always returns success, so simplify function to be void and run clang formatter over whole CONFIG_CGROUP_RDMA art of core_priv.h. This reduces unwinding error path for regular registration and future net namespace change functionality for rdma device. Signed-off-by: Parav Pandit Signed-off-by: Leon Romanovsky Acked-by: Tejun Heo Signed-off-by: Jason Gunthorpe

rdmacg: Added rdma cgroup controller

2017-01-10T16:14:27+00:00

Added rdma cgroup controller that does accounting, limit enforcement on rdma/IB resources. Added rdma cgroup header file which defines its APIs to perform charging/uncharging functionality. It also defined APIs for RDMA/IB stack for device registration. Devices which are registered will participate in controller functions of accounting and limit enforcements. It define rdmacg_device structure to bind IB stack and RDMA cgroup controller. RDMA resources are tracked using resource pool. Resource pool is per device, per cgroup entity which allows setting up accounting limits on per device basis. Currently resources are defined by the RDMA cgroup. Resource pool is created/destroyed dynamically whenever charging/uncharging occurs respectively and whenever user configuration is done. Its a tradeoff of memory vs little more code space that creates resource pool object whenever necessary, instead of creating them during cgroup creation and device registration time. Signed-off-by: Parav Pandit Signed-off-by: Tejun Heo