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IB/core: added support to use rdma cgroup controller

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Added support APIs for IB core to register/unregister every IB/RDMA
device with rdma cgroup for tracking rdma resources.
IB core registers with rdma cgroup controller.
Added support APIs for uverbs layer to make use of rdma controller.
Added uverbs layer to perform resource charge/uncharge functionality.
Added support during query_device uverb operation to ensure it
returns resource limits by honoring rdma cgroup configured limits.

Signed-off-by: Parav Pandit <pandit.parav@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Parav Pandit
2017-01-10 00:02:14 +00:00
committed by Tejun Heo
parent 39d3e7584a
commit 43579b5f2c
7 changed files with 233 additions and 6 deletions
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10
drivers/infiniband/core/device.c
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@@ -360,10 +360,18 @@ int ib_register_device(struct ib_device *device,
goto out;
}
ret = ib_device_register_rdmacg(device);
if (ret) {
pr_warn("Couldn't register device with rdma cgroup\n");
ib_cache_cleanup_one(device);
goto out;
}
memset(&device->attrs, 0, sizeof(device->attrs));
ret = device->query_device(device, &device->attrs, &uhw);
if (ret) {
pr_warn("Couldn't query the device attributes\n");
ib_device_unregister_rdmacg(device);
ib_cache_cleanup_one(device);
goto out;
}
@@ -372,6 +380,7 @@ int ib_register_device(struct ib_device *device,
if (ret) {
pr_warn("Couldn't register device %s with driver model\n",
device->name);
ib_device_unregister_rdmacg(device);
ib_cache_cleanup_one(device);
goto out;
}
@@ -421,6 +430,7 @@ void ib_unregister_device(struct ib_device *device)
mutex_unlock(&device_mutex);
ib_device_unregister_rdmacg(device);
ib_device_unregister_sysfs(device);
ib_cache_cleanup_one(device);