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| author | Anshuman Khandual <anshuman.khandual@arm.com> | 2021-08-11 08:57:07 +0530 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2021-08-11 11:02:12 +0100 |
| commit | fd264b310579efc14436b2ec86defa5d4c31332e (patch) | |
| tree | 552e355f035bac96bc66d7001e74a96b62d8a11c /arch/arm64/include/asm/cpufeature.h | |
| parent | ff1176468d368232b684f75e82563369208bc371 (diff) | |
| download | lwn-fd264b310579efc14436b2ec86defa5d4c31332e.tar.gz lwn-fd264b310579efc14436b2ec86defa5d4c31332e.zip | |
arm64/perf: Replace '0xf' instances with ID_AA64DFR0_PMUVER_IMP_DEF
ID_AA64DFR0_PMUVER_IMP_DEF, indicating an "implementation defined" PMU,
never actually gets used although there are '0xf' instances scattered
all around. Use the symbolic name instead of the raw hex constant.
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Link: https://lore.kernel.org/r/1628652427-24695-2-git-send-email-anshuman.khandual@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/include/asm/cpufeature.h')
| -rw-r--r-- | arch/arm64/include/asm/cpufeature.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/include/asm/cpufeature.h b/arch/arm64/include/asm/cpufeature.h index 9bb9d11750d7..54474e76ad86 100644 --- a/arch/arm64/include/asm/cpufeature.h +++ b/arch/arm64/include/asm/cpufeature.h @@ -552,7 +552,7 @@ cpuid_feature_cap_perfmon_field(u64 features, int field, u64 cap) u64 mask = GENMASK_ULL(field + 3, field); /* Treat IMPLEMENTATION DEFINED functionality as unimplemented */ - if (val == 0xf) + if (val == ID_AA64DFR0_PMUVER_IMP_DEF) val = 0; if (val > cap) { |