Re: Make vhost multi-threaded and associate each thread to its guest's cgroup
From: Sridhar Samudrala <hidden>
Date: 2010-07-28 00:41:45
Also in:
kvm, lkml
Subsystem:
the rest, virtio host (vhost) · Maintainers:
Linus Torvalds, "Michael S. Tsirkin", Jason Wang
On Tue, 2010-07-27 at 23:42 +0300, Michael S. Tsirkin wrote:
Sridhar, I pushed a patchset with all known issues fixed, on my vhost-net-next branch. For now this ignores the cpu mask issue, addressing only the cgroups issue. Would appreciate testing and reports.
I had to apply the following patch to get it build. With this patch, i am seeing similar results as i saw earlier. Thanks Sridhar
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 996e751..8543898 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>
@@ -252,7 +253,7 @@ static long vhost_dev_set_owner(struct vhost_dev *dev) } dev->worker = worker; - err = cgroup_attach_task_current_cg(poller); + err = cgroup_attach_task_current_cg(worker); if (err) goto err_cgroup; wake_up_process(worker); /* avoid contributing to loadavg */