That was quick :) On 14-02-15 05:08 PM, Mathieu Desnoyers wrote: > Add a user-space ABI (new file /proc/lttng-logger) to lttng-modules > which can be written into by any user on the system. The content is > saved into the kernel trace stream into the "lttng_logger" kernel event.
Nice. I think this would do for the use-case we discussed (i.e. feedback Android's "ATRACE" events into lttng instead of ftrace's "trace_marker" file.) > The content of a single write is written into an lttng_logger event, > provided the packet size is large enough to store the content. If it is > not large enough, it won't be logged. However we cannot return any error > to the caller, since there may be more than one trace session listening > to this event. Can we just truncate instead of dropping if the event is too large? -- Karim Yaghmour CEO - Opersys inc. / www.opersys.com http://twitter.com/karimyaghmour _______________________________________________ lttng-dev mailing list [email protected] http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
