On Sun, Aug 17, 2014 at 02:02:39PM +0200, Vincent Bernat wrote: > ❦ 17 août 2014 13:54 +0200, Vincent Bernat <ber...@debian.org> : > > > trace-cmd should come with a "function_graph" plugins (mentioned in > > the manual pages, for example in trace-cmd-record). However, it seems > > absent. > > It seems that other plugins do not work either: > > $ sudo trace-cmd record -p function -e sched_switch ls > /sys/kernel/debug/tracing/events/sched_switch/filter > /sys/kernel/debug/tracing/events/*/sched_switch/filter > trace-cmd: No such file or directory > Plugin 'function' does not exist > > Despite the presence of /usr/lib/trace-cmd/plugins/plugin_function.so.
That's working fine here. I suspect your problem is either that you don't have debugfs mounted or that your kernel is missing something it needs to do what trace-cmd is asking. First check that /sys/kernel/debug is mounted, then that /sys/kernel/debug/tracing exists. If both those are true run 'cat /sys/kernel/debug/tracing/available_tracers' and make sure that function and function_graph are both in the list. -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
