On Fri, May 31, 2013 at 11:16:24AM +0200, Robert Richter wrote: > From: Robert Richter <robert.rich...@calxeda.com> > > The event parser is limited to update only a subset of all fields in > struct perf_event_attr (config*, period, branch_type). We are not able > to set other attr fields, esp. flags. > > Introducing a new syntax to set any field of the event attribute by > using an index to the u64 value to be used within struct > perf_event_attr. The new syntax attr<num> is similar to config<num>, > but <num> specifies the index to be used. E.g. attr5:23 sets bit 23 of > the flag field of attr. > > The persistent event implementation is a use case of the above. In > this case sysfs provides: > > > /sys/bus/event_source/devices/persistent/events/mce_record:persistent,config=106 > /sys/bus/event_source/devices/persistent/format/persistent:attr5:23
good idea, you probably need to update: Documentation/ABI/testing/sysfs-bus-event_source-devices-format also.. there's so far only mce_record event AFAICS, and this seems to be initialized at the time when sysfs's not ready so I dont get the sysfs entries for it.. and since there's no other event yet, the sysfs is not updated/populated later.. I think ;) I'll probably tweak it somehow later, but if there was anything simple I could do or I missed something please let me know, that would speed up my testing thanks, jirka -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
