I am trying to run Perf with raw events and have couple of doubts. Firstly from the perf code that I have downloaded, I see this for one of the events for WestMere. How do I encode it in raw format? Without the inv and cmask I know it is "-r3fb1" but cant figure out what the value is with the inv and mask.
intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_BACKEND] =
X86_CONFIG(.event=0xb1, .umask=0x3f, .inv=1, .cmask=1);
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Also as per the manual the stall cycle is with a mask of 40H - not sure wht the code is trying to do 3F. I may have a bum version of the code maybe.
B1H 40H UOPS_EXECUTED.PORT015 Counts number of Uops executed that where issued
on port 0, 1, or 5.
use cmask=1, invert=1
to count stall cycles
thanks for the help.
