#include #include #include #include #include #include #include "br_private.h" static int br_switchdev_mark_get(struct net_bridge *br, struct net_device *dev) { struct net_bridge_port *p; /* dev is yet to be added to the port list. */ list_for_each_entry(p, &br->port_list, list) { if (switchdev_port_same_parent_id(dev, p->dev)) return p->offload_fwd_mark; } return ++br->offload_fwd_mark; } int nbp_switchdev_mark_set(struct net_bridge_port *p) { struct switchdev_attr attr = { .orig_dev = p->dev, .id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID, }; int err; ASSERT_RTNL(); err = switchdev_port_attr_get(p->dev, &attr); if (err) { if (err == -EOPNOTSUPP) return 0; return err; } p->offload_fwd_mark = br_switchdev_mark_get(p->br, p->dev); return 0; } void nbp_switchdev_frame_mark(const struct net_bridge_port *p, struct sk_buff *skb) { if (skb->offload_fwd_mark && !WARN_ON_ONCE(!p->offload_fwd_mark)) BR_INPUT_SKB_CB(skb)->offload_fwd_mark = p->offload_fwd_mark; } bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p, const struct sk_buff *skb) { return !skb->offload_fwd_mark || BR_INPUT_SKB_CB(skb)->offload_fwd_mark != p->offload_fwd_mark; } rx-pump-back net-next plumbingsTobias Klauser
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authorSteven Rostedt (VMware) <rostedt@goodmis.org>2017-01-30 19:27:10 -0500
committerSteven Rostedt (VMware) <rostedt@goodmis.org>2017-01-31 09:13:49 -0500
commit79c6f448c8b79c321e4a1f31f98194e4f6b6cae7 (patch)
tree370efda701f03cccf21e02bb1fdd3b852547d75c /include/drm/drm_hashtab.h
parent0c744ea4f77d72b3dcebb7a8f2684633ec79be88 (diff)
tracing: Fix hwlat kthread migration
The hwlat tracer creates a kernel thread at start of the tracer. It is pinned to a single CPU and will move to the next CPU after each period of running. If the user modifies the migration thread's affinity, it will not change after that happens. The original code created the thread at the first instance it was called, but later was changed to destroy the thread after the tracer was finished, and would not be created until the next instance of the tracer was established. The code that initialized the affinity was only called on the initial instantiation of the tracer. After that, it was not initialized, and the previous affinity did not match the current newly created one, making it appear that the user modified the thread's affinity when it did not, and the thread failed to migrate again. Cc: stable@vger.kernel.org Fixes: 0330f7aa8ee6 ("tracing: Have hwlat trace migrate across tracing_cpumask CPUs") Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'include/drm/drm_hashtab.h')