diff options
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/arch_numa.c | 2 | ||||
| -rw-r--r-- | drivers/base/arch_topology.c | 56 | ||||
| -rw-r--r-- | drivers/base/power/qos.c | 2 | ||||
| -rw-r--r-- | drivers/base/regmap/internal.h | 1 | ||||
| -rw-r--r-- | drivers/base/regmap/regmap-debugfs.c | 8 | ||||
| -rw-r--r-- | drivers/base/regmap/regmap-kunit.c | 60 | ||||
| -rw-r--r-- | drivers/base/regmap/regmap-ram.c | 4 | ||||
| -rw-r--r-- | drivers/base/regmap/regmap-raw-ram.c | 31 | ||||
| -rw-r--r-- | drivers/base/regmap/regmap.c | 2 |
9 files changed, 130 insertions, 36 deletions
diff --git a/drivers/base/arch_numa.c b/drivers/base/arch_numa.c index eaa31e567d1e..5b59d133b6af 100644 --- a/drivers/base/arch_numa.c +++ b/drivers/base/arch_numa.c @@ -144,7 +144,7 @@ void __init early_map_cpu_to_node(unsigned int cpu, int nid) unsigned long __per_cpu_offset[NR_CPUS] __read_mostly; EXPORT_SYMBOL(__per_cpu_offset); -static int __init early_cpu_to_node(int cpu) +int __init early_cpu_to_node(int cpu) { return cpu_to_node_map[cpu]; } diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c index b741b5ba82bd..5aaa0865625d 100644 --- a/drivers/base/arch_topology.c +++ b/drivers/base/arch_topology.c @@ -19,6 +19,7 @@ #include <linux/init.h> #include <linux/rcupdate.h> #include <linux/sched.h> +#include <linux/units.h> #define CREATE_TRACE_POINTS #include <trace/events/thermal_pressure.h> @@ -26,7 +27,8 @@ static DEFINE_PER_CPU(struct scale_freq_data __rcu *, sft_data); static struct cpumask scale_freq_counters_mask; static bool scale_freq_invariant; -static DEFINE_PER_CPU(u32, freq_factor) = 1; +DEFINE_PER_CPU(unsigned long, capacity_freq_ref) = 1; +EXPORT_PER_CPU_SYMBOL_GPL(capacity_freq_ref); static bool supports_scale_freq_counters(const struct cpumask *cpus) { @@ -170,9 +172,9 @@ DEFINE_PER_CPU(unsigned long, thermal_pressure); * operating on stale data when hot-plug is used for some CPUs. The * @capped_freq reflects the currently allowed max CPUs frequency due to * thermal capping. It might be also a boost frequency value, which is bigger - * than the internal 'freq_factor' max frequency. In such case the pressure - * value should simply be removed, since this is an indication that there is - * no thermal throttling. The @capped_freq must be provided in kHz. + * than the internal 'capacity_freq_ref' max frequency. In such case the + * pressure value should simply be removed, since this is an indication that + * there is no thermal throttling. The @capped_freq must be provided in kHz. */ void topology_update_thermal_pressure(const struct cpumask *cpus, unsigned long capped_freq) @@ -183,10 +185,7 @@ void topology_update_thermal_pressure(const struct cpumask *cpus, cpu = cpumask_first(cpus); max_capacity = arch_scale_cpu_capacity(cpu); - max_freq = per_cpu(freq_factor, cpu); - - /* Convert to MHz scale which is used in 'freq_factor' */ - capped_freq /= 1000; + max_freq = arch_scale_freq_ref(cpu); /* * Handle properly the boost frequencies, which should simply clean @@ -279,13 +278,13 @@ void topology_normalize_cpu_scale(void) capacity_scale = 1; for_each_possible_cpu(cpu) { - capacity = raw_capacity[cpu] * per_cpu(freq_factor, cpu); + capacity = raw_capacity[cpu] * per_cpu(capacity_freq_ref, cpu); capacity_scale = max(capacity, capacity_scale); } pr_debug("cpu_capacity: capacity_scale=%llu\n", capacity_scale); for_each_possible_cpu(cpu) { - capacity = raw_capacity[cpu] * per_cpu(freq_factor, cpu); + capacity = raw_capacity[cpu] * per_cpu(capacity_freq_ref, cpu); capacity = div64_u64(capacity << SCHED_CAPACITY_SHIFT, capacity_scale); topology_set_cpu_scale(cpu, capacity); @@ -321,15 +320,15 @@ bool __init topology_parse_cpu_capacity(struct device_node *cpu_node, int cpu) cpu_node, raw_capacity[cpu]); /* - * Update freq_factor for calculating early boot cpu capacities. + * Update capacity_freq_ref for calculating early boot CPU capacities. * For non-clk CPU DVFS mechanism, there's no way to get the * frequency value now, assuming they are running at the same - * frequency (by keeping the initial freq_factor value). + * frequency (by keeping the initial capacity_freq_ref value). */ cpu_clk = of_clk_get(cpu_node, 0); if (!PTR_ERR_OR_ZERO(cpu_clk)) { - per_cpu(freq_factor, cpu) = - clk_get_rate(cpu_clk) / 1000; + per_cpu(capacity_freq_ref, cpu) = + clk_get_rate(cpu_clk) / HZ_PER_KHZ; clk_put(cpu_clk); } } else { @@ -345,11 +344,16 @@ bool __init topology_parse_cpu_capacity(struct device_node *cpu_node, int cpu) return !ret; } +void __weak freq_inv_set_max_ratio(int cpu, u64 max_rate) +{ +} + #ifdef CONFIG_ACPI_CPPC_LIB #include <acpi/cppc_acpi.h> void topology_init_cpu_capacity_cppc(void) { + u64 capacity, capacity_scale = 0; struct cppc_perf_caps perf_caps; int cpu; @@ -366,6 +370,10 @@ void topology_init_cpu_capacity_cppc(void) (perf_caps.highest_perf >= perf_caps.nominal_perf) && (perf_caps.highest_perf >= perf_caps.lowest_perf)) { raw_capacity[cpu] = perf_caps.highest_perf; + capacity_scale = max_t(u64, capacity_scale, raw_capacity[cpu]); + + per_cpu(capacity_freq_ref, cpu) = cppc_perf_to_khz(&perf_caps, raw_capacity[cpu]); + pr_debug("cpu_capacity: CPU%d cpu_capacity=%u (raw).\n", cpu, raw_capacity[cpu]); continue; @@ -376,7 +384,18 @@ void topology_init_cpu_capacity_cppc(void) goto exit; } - topology_normalize_cpu_scale(); + for_each_possible_cpu(cpu) { + freq_inv_set_max_ratio(cpu, + per_cpu(capacity_freq_ref, cpu) * HZ_PER_KHZ); + + capacity = raw_capacity[cpu]; + capacity = div64_u64(capacity << SCHED_CAPACITY_SHIFT, + capacity_scale); + topology_set_cpu_scale(cpu, capacity); + pr_debug("cpu_capacity: CPU%d cpu_capacity=%lu\n", + cpu, topology_get_cpu_scale(cpu)); + } + schedule_work(&update_topology_flags_work); pr_debug("cpu_capacity: cpu_capacity initialization done\n"); @@ -410,8 +429,11 @@ init_cpu_capacity_callback(struct notifier_block *nb, cpumask_andnot(cpus_to_visit, cpus_to_visit, policy->related_cpus); - for_each_cpu(cpu, policy->related_cpus) - per_cpu(freq_factor, cpu) = policy->cpuinfo.max_freq / 1000; + for_each_cpu(cpu, policy->related_cpus) { + per_cpu(capacity_freq_ref, cpu) = policy->cpuinfo.max_freq; + freq_inv_set_max_ratio(cpu, + per_cpu(capacity_freq_ref, cpu) * HZ_PER_KHZ); + } if (cpumask_empty(cpus_to_visit)) { topology_normalize_cpu_scale(); diff --git a/drivers/base/power/qos.c b/drivers/base/power/qos.c index 8e93167f1783..bd77f6734f14 100644 --- a/drivers/base/power/qos.c +++ b/drivers/base/power/qos.c @@ -201,7 +201,7 @@ static int dev_pm_qos_constraints_allocate(struct device *dev) if (!qos) return -ENOMEM; - n = kzalloc(3 * sizeof(*n), GFP_KERNEL); + n = kcalloc(3, sizeof(*n), GFP_KERNEL); if (!n) { kfree(qos); return -ENOMEM; diff --git a/drivers/base/regmap/internal.h b/drivers/base/regmap/internal.h index 9a9ea514c2d8..583dd5d7d46b 100644 --- a/drivers/base/regmap/internal.h +++ b/drivers/base/regmap/internal.h @@ -318,6 +318,7 @@ struct regmap_ram_data { bool *read; bool *written; enum regmap_endian reg_endian; + bool (*noinc_reg)(struct regmap_ram_data *data, unsigned int reg); }; /* diff --git a/drivers/base/regmap/regmap-debugfs.c b/drivers/base/regmap/regmap-debugfs.c index bdd80b73c3e6..fb84cda92a75 100644 --- a/drivers/base/regmap/regmap-debugfs.c +++ b/drivers/base/regmap/regmap-debugfs.c @@ -226,8 +226,8 @@ static ssize_t regmap_read_debugfs(struct regmap *map, unsigned int from, if (*ppos < 0 || !count) return -EINVAL; - if (count > (PAGE_SIZE << MAX_ORDER)) - count = PAGE_SIZE << MAX_ORDER; + if (count > (PAGE_SIZE << MAX_PAGE_ORDER)) + count = PAGE_SIZE << MAX_PAGE_ORDER; buf = kmalloc(count, GFP_KERNEL); if (!buf) @@ -373,8 +373,8 @@ static ssize_t regmap_reg_ranges_read_file(struct file *file, if (*ppos < 0 || !count) return -EINVAL; - if (count > (PAGE_SIZE << MAX_ORDER)) - count = PAGE_SIZE << MAX_ORDER; + if (count > (PAGE_SIZE << MAX_PAGE_ORDER)) + count = PAGE_SIZE << MAX_PAGE_ORDER; buf = kmalloc(count, GFP_KERNEL); if (!buf) diff --git a/drivers/base/regmap/regmap-kunit.c b/drivers/base/regmap/regmap-kunit.c index e14cc03a17f6..026bdcb45127 100644 --- a/drivers/base/regmap/regmap-kunit.c +++ b/drivers/base/regmap/regmap-kunit.c @@ -1186,6 +1186,65 @@ static void raw_write(struct kunit *test) regmap_exit(map); } +static bool reg_zero(struct device *dev, unsigned int reg) +{ + return reg == 0; +} + +static bool ram_reg_zero(struct regmap_ram_data *data, unsigned int reg) +{ + return reg == 0; +} + +static void raw_noinc_write(struct kunit *test) +{ + struct raw_test_types *t = (struct raw_test_types *)test->param_value; + struct regmap *map; + struct regmap_config config; + struct regmap_ram_data *data; + unsigned int val, val_test, val_last; + u16 val_array[BLOCK_TEST_SIZE]; + + config = raw_regmap_config; + config.volatile_reg = reg_zero; + config.writeable_noinc_reg = reg_zero; + config.readable_noinc_reg = reg_zero; + + map = gen_raw_regmap(&config, t, &data); + KUNIT_ASSERT_FALSE(test, IS_ERR(map)); + if (IS_ERR(map)) + return; + + data->noinc_reg = ram_reg_zero; + + get_random_bytes(&val_array, sizeof(val_array)); + + if (config.val_format_endian == REGMAP_ENDIAN_BIG) { + val_test = be16_to_cpu(val_array[1]) + 100; + val_last = be16_to_cpu(val_array[BLOCK_TEST_SIZE - 1]); + } else { + val_test = le16_to_cpu(val_array[1]) + 100; + val_last = le16_to_cpu(val_array[BLOCK_TEST_SIZE - 1]); + } + + /* Put some data into the register following the noinc register */ + KUNIT_EXPECT_EQ(test, 0, regmap_write(map, 1, val_test)); + + /* Write some data to the noinc register */ + KUNIT_EXPECT_EQ(test, 0, regmap_noinc_write(map, 0, val_array, + sizeof(val_array))); + + /* We should read back the last value written */ + KUNIT_EXPECT_EQ(test, 0, regmap_read(map, 0, &val)); + KUNIT_ASSERT_EQ(test, val_last, val); + + /* Make sure we didn't touch the register after the noinc register */ + KUNIT_EXPECT_EQ(test, 0, regmap_read(map, 1, &val)); + KUNIT_ASSERT_EQ(test, val_test, val); + + regmap_exit(map); +} + static void raw_sync(struct kunit *test) { struct raw_test_types *t = (struct raw_test_types *)test->param_value; @@ -1284,6 +1343,7 @@ static struct kunit_case regmap_test_cases[] = { KUNIT_CASE_PARAM(raw_read_defaults, raw_test_types_gen_params), KUNIT_CASE_PARAM(raw_write_read_single, raw_test_types_gen_params), KUNIT_CASE_PARAM(raw_write, raw_test_types_gen_params), + KUNIT_CASE_PARAM(raw_noinc_write, raw_test_types_gen_params), KUNIT_CASE_PARAM(raw_sync, raw_test_cache_types_gen_params), {} }; diff --git a/drivers/base/regmap/regmap-ram.c b/drivers/base/regmap/regmap-ram.c index 85f34a5dee04..192d6b131dff 100644 --- a/drivers/base/regmap/regmap-ram.c +++ b/drivers/base/regmap/regmap-ram.c @@ -65,12 +65,12 @@ struct regmap *__regmap_init_ram(const struct regmap_config *config, return ERR_PTR(-EINVAL); } - data->read = kcalloc(sizeof(bool), config->max_register + 1, + data->read = kcalloc(config->max_register + 1, sizeof(bool), GFP_KERNEL); if (!data->read) return ERR_PTR(-ENOMEM); - data->written = kcalloc(sizeof(bool), config->max_register + 1, + data->written = kcalloc(config->max_register + 1, sizeof(bool), GFP_KERNEL); if (!data->written) return ERR_PTR(-ENOMEM); diff --git a/drivers/base/regmap/regmap-raw-ram.c b/drivers/base/regmap/regmap-raw-ram.c index c9b800885f3b..93ae07b503fd 100644 --- a/drivers/base/regmap/regmap-raw-ram.c +++ b/drivers/base/regmap/regmap-raw-ram.c @@ -41,10 +41,15 @@ static int regmap_raw_ram_gather_write(void *context, return -EINVAL; r = decode_reg(data->reg_endian, reg); - memcpy(&our_buf[r], val, val_len); - - for (i = 0; i < val_len / 2; i++) - data->written[r + i] = true; + if (data->noinc_reg && data->noinc_reg(data, r)) { + memcpy(&our_buf[r], val + val_len - 2, 2); + data->written[r] = true; + } else { + memcpy(&our_buf[r], val, val_len); + + for (i = 0; i < val_len / 2; i++) + data->written[r + i] = true; + } return 0; } @@ -70,10 +75,16 @@ static int regmap_raw_ram_read(void *context, return -EINVAL; r = decode_reg(data->reg_endian, reg); - memcpy(val, &our_buf[r], val_len); - - for (i = 0; i < val_len / 2; i++) - data->read[r + i] = true; + if (data->noinc_reg && data->noinc_reg(data, r)) { + for (i = 0; i < val_len; i += 2) + memcpy(val + i, &our_buf[r], 2); + data->read[r] = true; + } else { + memcpy(val, &our_buf[r], val_len); + + for (i = 0; i < val_len / 2; i++) + data->read[r + i] = true; + } return 0; } @@ -111,12 +122,12 @@ struct regmap *__regmap_init_raw_ram(const struct regmap_config *config, return ERR_PTR(-EINVAL); } - data->read = kcalloc(sizeof(bool), config->max_register + 1, + data->read = kcalloc(config->max_register + 1, sizeof(bool), GFP_KERNEL); if (!data->read) return ERR_PTR(-ENOMEM); - data->written = kcalloc(sizeof(bool), config->max_register + 1, + data->written = kcalloc(config->max_register + 1, sizeof(bool), GFP_KERNEL); if (!data->written) return ERR_PTR(-ENOMEM); diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index ea6157747199..6db77d8e45f9 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -2136,7 +2136,7 @@ static int regmap_noinc_readwrite(struct regmap *map, unsigned int reg, } /** - * regmap_noinc_write(): Write data from a register without incrementing the + * regmap_noinc_write(): Write data to a register without incrementing the * register number * * @map: Register map to write to |