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authorMichael S. Tsirkin <mst@redhat.com>2010-07-27 21:56:50 +0200
committerMichael S. Tsirkin <mst@redhat.com>2010-07-28 14:45:18 +0200
commit9e3d195720d1c8b1e09013185ab8c3b749180fc2 (patch)
tree365fad241060b88546d7d5523e9c5a74c968a56c /drivers/vhost
parentcgroups: Add an API to attach a task to current task's cgroup (diff)
downloadlinux-9e3d195720d1c8b1e09013185ab8c3b749180fc2.tar.xz
linux-9e3d195720d1c8b1e09013185ab8c3b749180fc2.zip
vhost: apply cgroup to vhost workers
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>
Diffstat (limited to 'drivers/vhost')
-rw-r--r--drivers/vhost/vhost.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 30d93c2b45b8..dd2d019b889f 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -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);