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tools lib traceevent: Add cfg80211 plugin

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Adding cfg80211 plugin.

This plugin adds handler for __le16_to_cpup function
t properly parse following tracepoint events:
  cfg80211:cfg80211_tx_mlme_mgmt
  cfg80211:cfg80211_rx_mlme_mgmt
  cfg80211:cfg80211_rx_unprot_mlme_mgmt

The diff of 'perf script' output generated by old and new code:
(data was generated by 'perf record -e 'cfg80211:*' -a')

  --- script.cfg80211.old
  +++ script.cfg80211.new
  -        ifconfig  2705 [003]   662.896560: cfg80211:cfg80211_tx_mlme_mgmt: [FAILED TO PARSE] name=wlan0 ifindex=3 frame=ARRAY[c0, 00, 00, 00, 00, 3a, 98, a0, 30, 51, 10, 0b, a9, c6, f4, 74, 00, 3a, 98, a0, 30, 51, 00, 00, 03, 00]
  +        ifconfig  2705 [003]   662.896560: cfg80211:cfg80211_tx_mlme_mgmt: netdev:wlan0(3), ftype:0xc0
  -   kworker/u16:0  1697 [002]   664.808210: cfg80211:cfg80211_rx_mlme_mgmt: [FAILED TO PARSE] name=wlan0 ifindex=3 frame=ARRAY[b0, 00, da, 00, 10, 0b, a9, c6, f4, 74, d8, 24, bd, a1, 26, 31, d8, 24, bd, a1, 26, 31, 10, b7, 00, 00, 02, 00, 00, 00]
  +   kworker/u16:0  1697 [002]   664.808210: cfg80211:cfg80211_rx_mlme_mgmt: netdev:wlan0(3), ftype:0xb0

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1386076182-14484-22-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2013-12-03 14:09:35 +01:00 committed by Arnaldo Carvalho de Melo
parent 04010929fa
commit 9437147373
2 changed files with 25 additions and 0 deletions
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1
tools/lib/traceevent/Makefile
View file

@ -221,6 +221,7 @@ PLUGIN_OBJS += plugin_sched_switch.o
PLUGIN_OBJS += plugin_function.o
PLUGIN_OBJS += plugin_xen.o
PLUGIN_OBJS += plugin_scsi.o
PLUGIN_OBJS += plugin_cfg80211.o
PLUGINS := $(PLUGIN_OBJS:.o=.so)

24
tools/lib/traceevent/plugin_cfg80211.c Normal file
View file

@ -0,0 +1,24 @@
#include <stdio.h>
#include <string.h>
#include <inttypes.h>
#include <endian.h>
#include "event-parse.h"
static unsigned long long
process___le16_to_cpup(struct trace_seq *s,
unsigned long long *args)
{
uint16_t *val = (uint16_t *) args[0];
return val ? (long long) le16toh(*val) : 0;
}
int PEVENT_PLUGIN_LOADER(struct pevent *pevent)
{
pevent_register_print_function(pevent,
process___le16_to_cpup,
PEVENT_FUNC_ARG_INT,
"__le16_to_cpup",
PEVENT_FUNC_ARG_PTR,
PEVENT_FUNC_ARG_VOID);
return 0;
}