Hi Peter,

On Aug 19, 2021, at 11:27 AM, Peter Zijlstra [off-list ref] wrote:

On Thu, Aug 19, 2021 at 06:22:07PM +0000, Song Liu wrote:

quoted

quoted

And if we're going to be adding new pmu::methods then I figure one that
does the whole sample state might be more useful.

What do you mean by "whole sample state"? To integrate with exiting
perf_sample_data, like perf_output_sample()?

Yeah, the PMI can/does set more than data->br_stack, but I'm now
thinking that without an actual PMI, much of that will not be possible.
br_stack is special here.

Oh well, carry on I suppose.

Thanks again for these information and suggestions. I will try to put them
together in the code and send the patches. 

Song