Koki Sanagi 07dc22e729 skb: Add tracepoints to freeing skb ... 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>		2010-09-07 17:51:53 +02:00
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events	skb: Add tracepoints to freeing skb	2010-09-07 17:51:53 +02:00
define_trace.h	tracing: Fix tracepoint.h DECLARE_TRACE() to allow more than one header	2010-05-05 11:46:17 -04:00
ftrace.h	tracing: Drop cpparg() macro	2010-08-02 01:31:28 +02:00
syscall.h	tracing: Use a global field list for all syscall exit events	2010-06-28 17:12:44 -04:00