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e543002f77
linux/net/core
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Jesper Dangaard Brouer e543002f77 qdisc: add tracepoint qdisc:qdisc_dequeue for dequeued SKBs 
The main purpose of this tracepoint is to monitor bulk dequeue
in the network qdisc layer, as it cannot be deducted from the
existing qdisc stats.

The txq_state can be used for determining the reason for zero packet
dequeues, see enum netdev_queue_state_t.

Notice all packets doesn't necessary activate this tracepoint. As
qdiscs with flag TCQ_F_CAN_BYPASS, can directly invoke
sch_direct_xmit() when qdisc_qlen is zero.

Remember that perf record supports filters like:

 perf record -e qdisc:qdisc_dequeue \
  --filter 'ifindex == 4 && (packets > 1 || txq_state > 0)'

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-16 14:10:10 -07:00
..
datagram.c sock: add MSG_ZEROCOPY 2017-08-03 21:37:29 -07:00
dev_addr_lists.c
dev_ioctl.c net: check dev->addr_len for dev_set_mac_address() 2017-07-29 11:25:05 -07:00
dev.c net: export some generic xdp helpers 2017-08-13 19:56:07 -07:00
devlink.c devlink: fix potential memort leak 2017-06-05 11:24:28 -04:00
drop_monitor.c drop_monitor: use setup_timer 2017-03-12 23:47:16 -07:00
dst_cache.c net: dst_cache_per_cpu_dst_set() can be static 2016-03-18 17:45:08 -04:00
dst.c net: store port/representator id in metadata_dst 2017-06-25 11:42:01 -04:00
ethtool.c net: ethtool: add support for forward error correction modes 2017-07-29 23:23:44 -07:00
fib_notifier.c net: core: Make the FIB notification chain generic 2017-08-03 15:35:59 -07:00
fib_rules.c rtnetlink: make rtnl_register accept a flags parameter 2017-08-09 16:57:38 -07:00
filter.c bpf: add access to sock fields and pkt data from sk_skb programs 2017-08-16 11:27:53 -07:00
flow_dissector.c dsa: fix flow disector null pointer 2017-08-15 17:18:35 -07:00
gen_estimator.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
gen_stats.c net_sched: gen_estimator: complete rewrite of rate estimators 2016-12-05 15:21:59 -05:00
gro_cells.c net: Generic XDP 2017-04-25 13:33:49 -04:00
hwbm.c net: hwbm: Fix unbalanced spinlock in error case 2016-05-25 12:35:09 -07:00
link_watch.c
lwt_bpf.c net: add extack arg to lwtunnel build state 2017-05-30 11:55:32 -04:00
lwtunnel.c ipv6: sr: define core operations for seg6local lightweight tunnel 2017-08-07 14:16:22 -07:00
Makefile net: core: Make the FIB notification chain generic 2017-08-03 15:35:59 -07:00
neighbour.c rtnetlink: make rtnl_register accept a flags parameter 2017-08-09 16:57:38 -07:00
net_namespace.c net: call newid/getid without rtnl mutex held 2017-08-09 16:57:38 -07:00
net-procfs.c net-procfs: Use vsnprintf extension %phN 2017-06-04 19:52:58 -04:00
net-sysfs.c net: convert net.passive from atomic_t to refcount_t 2017-07-01 07:39:09 -07:00
net-sysfs.h
net-traces.c qdisc: add tracepoint qdisc:qdisc_dequeue for dequeued SKBs 2017-08-16 14:10:10 -07:00
netclassid_cgroup.c cgroup, net_cls: iterate the fds of only the tasks which are being migrated 2017-03-22 10:32:46 -07:00
netevent.c
netpoll.c netpoll: Fix device name check in netpoll_setup() 2017-07-26 17:01:43 -07:00
netprio_cgroup.c net: break include loop netdevice.h, dsa.h, devlink.h 2017-03-28 22:46:04 -07:00
pktgen.c net: convert sk_buff.users from atomic_t to refcount_t 2017-07-01 07:39:07 -07:00
ptp_classifier.c ptp: Change ptp_class to a proper bitmask 2015-11-03 11:08:22 -05:00
request_sock.c ipv4: Namespaceify tcp_max_syn_backlog knob 2016-12-29 11:38:31 -05:00
rtnetlink.c rtnelink: Move link dump consistency check out of the loop 2017-08-13 19:43:57 -07:00
scm.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/user.h> 2017-03-02 08:42:29 +01:00
secure_seq.c tcp: Namespaceify sysctl_tcp_timestamps 2017-06-08 10:53:29 -04:00
skbuff.c net: fixes for skb_send_sock 2017-08-16 11:27:52 -07:00
sock_diag.c netlink: extended ACK reporting 2017-04-13 13:58:20 -04:00
sock_reuseport.c soreuseport: use "unsigned int" in __reuseport_alloc() 2017-04-03 19:06:38 -07:00
sock.c sock: add SOCK_ZEROCOPY sockopt 2017-08-03 21:37:29 -07:00
stream.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h> 2017-03-02 08:42:29 +01:00
sysctl_net_core.c net: move somaxconn init from sysctl code 2017-05-25 13:12:17 -04:00
timestamping.c
tso.c net: tso: add support for IPv6 2015-10-26 22:24:22 -07:00
utils.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2017-05-02 16:40:27 -07:00