2013-11-21 (목), 12:01 +0100, Jiri Olsa:
> 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
[SNIP]
> +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,
Just a nitpick. The function should return int or the return type
should be _LONG for consistency.
Thanks,
Namhyung
> + "__le16_to_cpup",
> + PEVENT_FUNC_ARG_PTR,
> + PEVENT_FUNC_ARG_VOID);
> + return 0;
> +}
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
