[lttng-dev] BUG: enable-event with filter, tracing error

[jia,fang]

Hi, jeremie

Could you help me to inform the follow issue ??

Thanks a lot

On 2015年08月17日 18:55, jia,fang wrote:
> Hi mathieu
> 
> Could you help me to inform this issue ??
> 
> Thanks a lot.
> 
> 
> On 2015年08月14日 14:39, jia,fang wrote:
>> Hi,
>>
>> Could you help me to inform this issue ?
>>
>> I found that if enable-event with filter and then start tracepoint,
>> you can not stop your tracing even if you disable your event.
>>
>> Do you have this problem ?
>>
>> Thanks a lot.
>>
>>
>> Here is my detail info:
>>
>> My system is Ubuntu14.04, and Lttng-version is lttng version 2.7.0-pre - Gaia -
>> v2.6.0-rc1-242-g60f7035.
>>
>> I build user application "hello" as
>> http://lttng.org/docs/v2.6/#doc-tracing-your-own-user-application told. And
>> modify part of the hello.c as follow:
>> for(;;)
>> {
>> sleep(2);
>> for (x = 0; x < argc; ++x) {
>>         tracepoint(hello_world, my_first_tracepoint, x, argv[x]);
>>     }
>> }
>>
>> Then I do this:
>> 1/ lttng create mysession
>> 2/ lttng enable-event hello_world:my_first_tracepoint --filter '$ctx.procname ==
>> "./hello*"' --session mysession -u -c channel
>>
>> 3/ lttng enable-event hello_world:my_first_tracepoint --session mysession -u -c
>> channel
>>
>> 4/ ./hello
>> I press Enter to start tracepoint
>>
>> 5/ lttng disable-event --session mysession --channel channel --userspace
>> hello_world:my_first_tracepoint
>>
>> 6/ lttng start
>>
>> 7/ lttng stop
>>
>> 8/ lttng view
>>
>> My detail log is as attachment
>>
>>
>>
>> BR,
>> Fang
>>
>>
> 
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