Hello
I cannot add contexts for perf counters using lttng-tools v2.1.1 and I
get an error (see below). When using lttng-tools 2.0.5 (on a different
computer) it works. Could somebody from lttng development team look into
that?
Thanks
Bernd
----------------------------------------------------------------------
> lttng create mySession
Session mySession created.
Traces will be written in /home/bernd/lttng-traces/mySession-20130319-145021
> lttng enable-event -a -k
All kernel events are enabled in channel channel0
> lttng add-context -k -t perf:branch-misses -t perf:cache-misses
PERROR: add context ioctl: Invalid argument [in
kernel_add_channel_context() at kernel.c:47]
Error: perf:cache-misses: Add kernel context failed
PERROR: add context ioctl: Invalid argument [in
kernel_add_channel_context() at kernel.c:47]
Error: perf:branch-misses: Add kernel context failed
Warning: Some command(s) went wrong
-----------------------------------------------------------------------
My setup is:
Ubuntu 12.04 with kernel 3.2.0-38
lttng-modules v2.1.1
lttng-tools v2.1.1
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