On 23/07/2021 07:56, Jin, Yao wrote:

quoted

quoted

Use the real name,
  $ perf stat -e uncore_cha_2/event=1/ -x,
    4044879584,,uncore_cha_2/event=1/,2528059205,100.00,,

Use the alias,
  $ perf stat -e uncore_type_0_2/event=1/ -x,
    3659675336,,uncore_type_0_2/event=1/,2287306455,100.00,,

Having a self-test case would be nice. And it's questionable why this 
goes in x86 code.

OK, I will add test cases for uncore PMU alias.

JFYI, I am doing a bit of a rewrite of tests/pmu-events.c to tighten it 
up to catch cases like those fixed and also broke in "perf tools: Fix 
pattern matching for same substring in different pmu type".

For why it's now only x86 specific code, my understanding is, currently 
x86 has this usage case, we can further extend it to other ARCHs and 
make it a generic way in future.

Generally that is not how things are done, but I'm not the maintainer ...

Thanks,
john