On Tue, 11 Oct 2022 17:40:26 +0100
Valentin Schneider [off-list ref] wrote:

quoted

You could keep the tracepoint as a mask, and then make it pretty, like cpus=3-5,8
in user-space. For example with a trace-cmd/perf loadable plugin, libtracefs helper.
 

That's a nice idea, the one downside I see is that means registering an
event handler for all events with cpumasks rather than directly targeting
cpumask fields, but that doesn't look too horrible. I'll dig a bit in that
direction.

We could just make all all dynamic array's of unsigned long use that
format? I don't know of any other event that has dynamic arrays of
unsigned longs. And doing a search doesn't come up with any.

-- Steve