vhost: apply cgroup to vhost workers (9e3d1957) · Commits · 戴 / test

Apply the cgroup of the owner task to the created vhost worker. Based on patches from Sridhar Samudrala's and Tejun Heo. Later we'll need to also apply cpumask and probably priority of the owner process. Discussion on the best way to do this is still ongoing. Signed-off-by:

Michael S. Tsirkin <mst@redhat.com> Cc: Tejun Heo <tj@kernel.org> Cc: Sridhar Samudrala <samudrala.sridhar@gmail.com> Cc: Li Zefan <lizf@cn.fujitsu.com>

drivers/vhost/vhost.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -23,6 +23,7 @@
		#include <linux/highmem.h>
		#include <linux/slab.h>
		#include <linux/kthread.h>
		#include <linux/cgroup.h>

		#include <linux/net.h>
		#include <linux/if_packet.h>
		@@ -253,9 +254,14 @@ static long vhost_dev_set_owner(struct vhost_dev *dev)
		}

		dev->worker = worker;
		err = cgroup_attach_task_current_cg(worker);
		if (err)
		goto err_cgroup;
		wake_up_process(worker); /* avoid contributing to loadavg */

		return 0;
		err_cgroup:
		kthread_stop(worker);
		err_worker:
		if (dev->mm)
		mmput(dev->mm);

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