perf/x86: Hybrid PMU support for extra_regs

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Different hybrid PMU may have different extra registers, e.g. Core PMU
may have offcore registers, frontend register and ldlat register. Atom
core may only have offcore registers and ldlat register. Each hybrid PMU
should use its own extra_regs.

An Intel Hybrid system should always have extra registers.
Unconditionally allocate shared_regs for Intel Hybrid system.

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Link: https://lkml.kernel.org/r/1618237865-33448-11-git-send-email-kan.liang@linux.intel.com

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Kan Liang 2021-04-12 07:30:50 -07:00 • committed by Peter Zijlstra

parent 24ee38ffe6

commit 183af7366b

3 changed files with 13 additions and 8 deletions

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5

arch/x86/events/core.c

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15

arch/x86/events/intel/core.c

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1

arch/x86/events/perf_event.h

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