On Thu, 24 Apr 2014, Philip Mucci wrote:
> As for the Linux portion, perf is already Linux only, plus configure or
> the compiler sets the LINUX preprocessing define.
Yes, I just mean if we're going to start encouraging people to access
uncore-type events by plopping
:cpu=1
on the end or whatever, that's going to be perf specific if we let libpfm4
handle it.
So we'll have two interfaces, the if-you're-on-Linux interface which is
possibly going to be incompatible with the everyone-else interface where
you have to go and do this:
PAPI_cpu_option_t cpu_opt;
cpu_opt.eventset=EventSet;
cpu_opt.cpu_num=0;
retval = PAPI_set_opt(PAPI_CPU_ATTACH,(PAPI_option_t*)&cpu_opt);
and it becomes unclear what happens if your event tries to use both
interfaces.
same issue with user/kernel granularity.
Vince
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