mirror of https://github.com/torvalds/linux.git
07dc22e729
This patch adds tracepoint to consume_skb and add trace_kfree_skb
before __kfree_skb in skb_free_datagram_locked and net_tx_action.
Combinating with tracepoint on dev_hard_start_xmit, we can check
how long it takes to free transmitted packets. And using it, we can
calculate how many packets driver had at that time. It is useful when
a drop of transmitted packet is a problem.
sshd-6828 [000] 112689.258154: consume_skb: skbaddr=f2d99bb8
Signed-off-by: Koki Sanagi <sanagi.koki@jp.fujitsu.com>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Kaneshige Kenji <kaneshige.kenji@jp.fujitsu.com>
Cc: Izumo Taku <izumi.taku@jp.fujitsu.com>
Cc: Kosaki Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: Scott Mcmillan <scott.a.mcmillan@intel.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
LKML-Reference: <4C724364.50903@jp.fujitsu.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
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|---|---|---|
| .. | ||
| bkl.h | ||
| block.h | ||
| ext4.h | ||
| gfpflags.h | ||
| irq.h | ||
| jbd2.h | ||
| kmem.h | ||
| kvm.h | ||
| lock.h | ||
| mce.h | ||
| module.h | ||
| napi.h | ||
| net.h | ||
| power.h | ||
| sched.h | ||
| scsi.h | ||
| signal.h | ||
| skb.h | ||
| syscalls.h | ||
| timer.h | ||
| vmscan.h | ||
| workqueue.h | ||
| writeback.h | ||