diff options
| author | James Clark <james.clark@arm.com> | 2023-12-11 19:13:15 +0300 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2023-12-12 12:46:22 +0300 |
| commit | 2f6a00f30600417ee2737f2b1229c75663f1e3c9 (patch) | |
| tree | 213294bd01d9b4f8315abc72035298529305bb11 | |
| parent | 62e1f212e5fe7624249212813ee96202e0c31430 (diff) | |
| download | linux-2f6a00f30600417ee2737f2b1229c75663f1e3c9.tar.xz | |
arm: perf: Use GENMASK for PMMIR fields
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/20231211161331.1277825-4-james.clark@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
| -rw-r--r-- | drivers/perf/arm_pmuv3.c | 8 | ||||
| -rw-r--r-- | include/linux/perf/arm_pmuv3.h | 9 |
2 files changed, 6 insertions, 11 deletions
diff --git a/drivers/perf/arm_pmuv3.c b/drivers/perf/arm_pmuv3.c index 374e973a4e42..36bc00494f56 100644 --- a/drivers/perf/arm_pmuv3.c +++ b/drivers/perf/arm_pmuv3.c @@ -332,7 +332,7 @@ static ssize_t slots_show(struct device *dev, struct device_attribute *attr, { struct pmu *pmu = dev_get_drvdata(dev); struct arm_pmu *cpu_pmu = container_of(pmu, struct arm_pmu, pmu); - u32 slots = cpu_pmu->reg_pmmir & ARMV8_PMU_SLOTS_MASK; + u32 slots = FIELD_GET(ARMV8_PMU_SLOTS, cpu_pmu->reg_pmmir); return sysfs_emit(page, "0x%08x\n", slots); } @@ -344,8 +344,7 @@ static ssize_t bus_slots_show(struct device *dev, struct device_attribute *attr, { struct pmu *pmu = dev_get_drvdata(dev); struct arm_pmu *cpu_pmu = container_of(pmu, struct arm_pmu, pmu); - u32 bus_slots = (cpu_pmu->reg_pmmir >> ARMV8_PMU_BUS_SLOTS_SHIFT) - & ARMV8_PMU_BUS_SLOTS_MASK; + u32 bus_slots = FIELD_GET(ARMV8_PMU_BUS_SLOTS, cpu_pmu->reg_pmmir); return sysfs_emit(page, "0x%08x\n", bus_slots); } @@ -357,8 +356,7 @@ static ssize_t bus_width_show(struct device *dev, struct device_attribute *attr, { struct pmu *pmu = dev_get_drvdata(dev); struct arm_pmu *cpu_pmu = container_of(pmu, struct arm_pmu, pmu); - u32 bus_width = (cpu_pmu->reg_pmmir >> ARMV8_PMU_BUS_WIDTH_SHIFT) - & ARMV8_PMU_BUS_WIDTH_MASK; + u32 bus_width = FIELD_GET(ARMV8_PMU_BUS_WIDTH, cpu_pmu->reg_pmmir); u32 val = 0; /* Encoded as Log2(number of bytes), plus one */ diff --git a/include/linux/perf/arm_pmuv3.h b/include/linux/perf/arm_pmuv3.h index ed62bd75cec7..1bc7678c10d4 100644 --- a/include/linux/perf/arm_pmuv3.h +++ b/include/linux/perf/arm_pmuv3.h @@ -250,12 +250,9 @@ #define ARMV8_PMU_USERENR_ER (1 << 3) /* Event counter can be read at EL0 */ /* PMMIR_EL1.SLOTS mask */ -#define ARMV8_PMU_SLOTS_MASK 0xff - -#define ARMV8_PMU_BUS_SLOTS_SHIFT 8 -#define ARMV8_PMU_BUS_SLOTS_MASK 0xff -#define ARMV8_PMU_BUS_WIDTH_SHIFT 16 -#define ARMV8_PMU_BUS_WIDTH_MASK 0xf +#define ARMV8_PMU_SLOTS GENMASK(7, 0) +#define ARMV8_PMU_BUS_SLOTS GENMASK(15, 8) +#define ARMV8_PMU_BUS_WIDTH GENMASK(19, 16) /* * This code is really good |