-
Kan Liang authored
Retire Latency reports the number of elapsed core clocks between the retirement of the instruction indicated by the Instruction Pointer field of the PEBS record and the retirement of the prior instruction. It's enumerated by the IA32_PERF_CAPABILITIES.PEBS_TIMING_INFO[17]. Add flag PMU_FL_RETIRE_LATENCY to indicate the availability of the feature. The Retire Latency is not supported by the fixed counter 0 on p-core of MTL. Signed-off-by:
Kan Liang <kan.liang@linux.intel.com> Signed-off-by:
Ingo Molnar <mingo@kernel.org> Reviewed-by:
Andi Kleen <ak@linux.intel.com> Acked-by:
Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20230104201349.1451191-3-kan.liang@linux.intel.com
c87a3109