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| author | Cong Wang <xiyou.wangcong@gmail.com> | 2020-05-26 21:35:25 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-05-27 15:05:49 -0700 |
| commit | f5a7833e83628f18c1ee94e6ffcb1d232f029be9 (patch) | |
| tree | 744de84947c3dab8440aecda9c93f536e3437b3b /net/sched/sch_api.c | |
| parent | a34dac0b9055202cf9c64e08d8d8dc5e23029d3a (diff) | |
| download | linux-f5a7833e83628f18c1ee94e6ffcb1d232f029be9.tar.bz2 | |
net_sched: add a tracepoint for qdisc creation
With this tracepoint, we could know when qdisc's are created,
especially those default qdisc's.
Sample output:
tc-736 [001] ...1 56.230107: qdisc_create: dev=ens3 kind=pfifo parent=1:0
tc-736 [001] ...1 56.230113: qdisc_create: dev=ens3 kind=hfsc parent=ffff:ffff
tc-738 [001] ...1 56.256816: qdisc_create: dev=ens3 kind=pfifo parent=1:100
tc-739 [001] ...1 56.267584: qdisc_create: dev=ens3 kind=pfifo parent=1:200
tc-740 [001] ...1 56.279649: qdisc_create: dev=ens3 kind=fq_codel parent=1:100
tc-741 [001] ...1 56.289996: qdisc_create: dev=ens3 kind=pfifo_fast parent=1:200
tc-745 [000] .N.1 111.687483: qdisc_create: dev=ens3 kind=ingress parent=ffff:fff1
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/sch_api.c')
| -rw-r--r-- | net/sched/sch_api.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c index 0d99df1e764d..9a3449b56bd6 100644 --- a/net/sched/sch_api.c +++ b/net/sched/sch_api.c @@ -32,6 +32,8 @@ #include <net/pkt_sched.h> #include <net/pkt_cls.h> +#include <trace/events/qdisc.h> + /* Short review. @@ -1283,6 +1285,7 @@ static struct Qdisc *qdisc_create(struct net_device *dev, } qdisc_hash_add(sch, false); + trace_qdisc_create(ops, dev, parent); return sch; |