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| author | Anshuman Khandual <anshuman.khandual@arm.com> | 2021-08-11 05:27:07 +0200 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2021-08-11 12:02:12 +0200 |
| commit | fd264b310579efc14436b2ec86defa5d4c31332e (patch) | |
| tree | 552e355f035bac96bc66d7001e74a96b62d8a11c /arch/arm64/kernel/perf_event.c | |
| parent | Linux 5.14-rc3 (diff) | |
| download | linux-fd264b310579efc14436b2ec86defa5d4c31332e.tar.xz linux-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/kernel/perf_event.c')
| -rw-r--r-- | arch/arm64/kernel/perf_event.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c index d07788dad388..b4044469527e 100644 --- a/arch/arm64/kernel/perf_event.c +++ b/arch/arm64/kernel/perf_event.c @@ -1055,7 +1055,7 @@ static void __armv8pmu_probe_pmu(void *info) dfr0 = read_sysreg(id_aa64dfr0_el1); pmuver = cpuid_feature_extract_unsigned_field(dfr0, ID_AA64DFR0_PMUVER_SHIFT); - if (pmuver == 0xf || pmuver == 0) + if (pmuver == ID_AA64DFR0_PMUVER_IMP_DEF || pmuver == 0) return; cpu_pmu->pmuver = pmuver; |