[lttng-dev] [RFC PATCH lttng-tools] Fix printk instrumentation

Yannick Brosseau yannick.brosseau at gmail.com
Thu Jul 4 15:19:14 EDT 2013

On 2013-07-04 14:22, Mathieu Desnoyers wrote:
> * Yannick Brosseau (yannick.brosseau at gmail.com) wrote:
>> 3.9: Works
>> 3.2: Fail to enable with this error msg (will try to get more detailled
>> info or fix)
>> root at debian-wheezy:/home/scientist# lttng enable-event -k console
>> PERROR [6648/6745]: create event ioctl: Invalid argument (in
>> kernel_create_event() at kernel.c:205)
>> Error: Event console: Enable kernel event failed (channel channel0,
>> session auto-20130630-135404)
>> Warning: Some command(s) went wrong
> Hrm, make sure the "condition" trace event actually exist in 3.2 ?
Ok, my bad, the printk_console traceport was added only in 3.4, which
works well.


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