On Wed, Oct 21, 2020 at 02:16:12PM -0700, Stephane Eranian wrote: > Starting with Arch Perfmon v5, the anythread filter on generic counters may be > deprecated. The current kernel was exporting the any filter without checking. > On Icelake, it means you could do cpu/event=0x3c,any/ even though the filter > does not exist. This patch corrects the problem by relying on the CPUID 0xa > leaf > function to determine if anythread is supported or not as described in the > Intel SDM Vol3b 18.2.5.1 AnyThread Deprecation section.
Reviewed-by: Andi Kleen <a...@linux.intel.com> -Andi
