perf/x86/intel: Extend the ref-cycles event to GP counters

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The current ref-cycles event is only available on the fixed counter 2.
Starting from the GLC and GRT core, the architectural UnHalted Reference
Cycles event (0x013c) which is available on general-purpose counters
can collect the exact same events as the fixed counter 2.

Update the mapping of ref-cycles to 0x013c. So the ref-cycles can be
available on both fixed counter 2 and general-purpose counters.

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20230911144139.2354015-1-kan.liang@linux.intel.com

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Kan Liang 2023-09-11 07:41:38 -07:00 • committed by Ingo Molnar

parent 950ecdc672

commit ffbe4ab0be

1 changed files with 20 additions and 1 deletions

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arch/x86/events/intel/core.c

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