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authorTejun Heo <tj@kernel.org>2019-11-05 02:54:29 +0300
committerTejun Heo <tj@kernel.org>2019-11-12 19:18:03 +0300
commitdb53c73a8b5db120cb741d7d932cdf831a576e8f (patch)
treeadf1622e1ad7b8de472121a8e78207d2c85c53f7 /net/core/netprio_cgroup.c
parentf05499a06fb4348b935dd2ffc2c86a76705486be (diff)
downloadlinux-db53c73a8b5db120cb741d7d932cdf831a576e8f.tar.xz
netprio: use css ID instead of cgroup ID
netprio uses cgroup ID to index the priority mapping table. This is currently okay as cgroup IDs are allocated using idr and packed. However, cgroup IDs will be changed to use full 64bit range and won't be packed making this impractical. netprio doesn't care what type of IDs it uses as long as they can identify the controller instances and are packed. Let's switch to css IDs instead of cgroup IDs. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Neil Horman <nhorman@tuxdriver.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Namhyung Kim <namhyung@kernel.org>
Diffstat (limited to 'net/core/netprio_cgroup.c')
-rw-r--r--net/core/netprio_cgroup.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/net/core/netprio_cgroup.c b/net/core/netprio_cgroup.c
index 256b7954b720..8881dd943dd0 100644
--- a/net/core/netprio_cgroup.c
+++ b/net/core/netprio_cgroup.c
@@ -93,7 +93,7 @@ static int extend_netdev_table(struct net_device *dev, u32 target_idx)
static u32 netprio_prio(struct cgroup_subsys_state *css, struct net_device *dev)
{
struct netprio_map *map = rcu_dereference_rtnl(dev->priomap);
- int id = css->cgroup->id;
+ int id = css->id;
if (map && id < map->priomap_len)
return map->priomap[id];
@@ -113,7 +113,7 @@ static int netprio_set_prio(struct cgroup_subsys_state *css,
struct net_device *dev, u32 prio)
{
struct netprio_map *map;
- int id = css->cgroup->id;
+ int id = css->id;
int ret;
/* avoid extending priomap for zero writes */
@@ -177,7 +177,7 @@ static void cgrp_css_free(struct cgroup_subsys_state *css)
static u64 read_prioidx(struct cgroup_subsys_state *css, struct cftype *cft)
{
- return css->cgroup->id;
+ return css->id;
}
static int read_priomap(struct seq_file *sf, void *v)
@@ -237,7 +237,7 @@ static void net_prio_attach(struct cgroup_taskset *tset)
struct cgroup_subsys_state *css;
cgroup_taskset_for_each(p, css, tset) {
- void *v = (void *)(unsigned long)css->cgroup->id;
+ void *v = (void *)(unsigned long)css->id;
task_lock(p);
iterate_fd(p->files, 0, update_netprio, v);