diff options
| author | James Clark <james.clark@arm.com> | 2023-12-11 19:13:14 +0300 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2023-12-12 12:46:21 +0300 |
| commit | 62e1f212e5fe7624249212813ee96202e0c31430 (patch) | |
| tree | ea98c64602cb5c9f4cc036e41e966bad2cc55964 /drivers/perf/arm_pmuv3.c | |
| parent | 9343c790e6de7edd2bab17572832f4f21c748dc2 (diff) | |
| download | linux-62e1f212e5fe7624249212813ee96202e0c31430.tar.xz | |
arm: perf/kvm: Use GENMASK for ARMV8_PMU_PMCR_N
This is so that FIELD_GET and FIELD_PREP can be used and that the fields
are in a consistent format to arm64/tools/sysreg
Signed-off-by: James Clark <james.clark@arm.com>
Link: https://lore.kernel.org/r/20231211161331.1277825-3-james.clark@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers/perf/arm_pmuv3.c')
| -rw-r--r-- | drivers/perf/arm_pmuv3.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/perf/arm_pmuv3.c b/drivers/perf/arm_pmuv3.c index 09478e2b825e..374e973a4e42 100644 --- a/drivers/perf/arm_pmuv3.c +++ b/drivers/perf/arm_pmuv3.c @@ -15,6 +15,7 @@ #include <clocksource/arm_arch_timer.h> #include <linux/acpi.h> +#include <linux/bitfield.h> #include <linux/clocksource.h> #include <linux/of.h> #include <linux/perf/arm_pmu.h> @@ -1111,8 +1112,7 @@ static void __armv8pmu_probe_pmu(void *info) probe->present = true; /* Read the nb of CNTx counters supported from PMNC */ - cpu_pmu->num_events = (armv8pmu_pmcr_read() >> ARMV8_PMU_PMCR_N_SHIFT) - & ARMV8_PMU_PMCR_N_MASK; + cpu_pmu->num_events = FIELD_GET(ARMV8_PMU_PMCR_N, armv8pmu_pmcr_read()); /* Add the CPU cycles counter */ cpu_pmu->num_events += 1; |