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__armv8pmu_probe_pmu() returns if detected PMU is either not implemented or implementation defined. Extracted ID_AA64DFR0_EL1_PMUVer value, when PMU is not implemented is '0' which can be replaced with ID_AA64DFR0_EL1_PMUVer_NI defined as '0b0000'. Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: linux-perf-users@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Link: https://lore.kernel.org/r/20221128025449.39085-1-anshuman.khandual@arm.com Signed-off-by: Will Deacon <will@kernel.org> |
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