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-rw-r--r--drivers/cpufreq/acpi-cpufreq.c4
-rw-r--r--drivers/cpufreq/arm_big_little.c2
-rw-r--r--drivers/cpufreq/bmips-cpufreq.c2
-rw-r--r--drivers/cpufreq/brcmstb-avs-cpufreq.c2
-rw-r--r--drivers/cpufreq/cppc_cpufreq.c83
-rw-r--r--drivers/cpufreq/ia64-acpi-cpufreq.c4
-rw-r--r--drivers/cpufreq/imx6q-cpufreq.c3
-rw-r--r--drivers/cpufreq/intel_pstate.c2
-rw-r--r--drivers/cpufreq/longhaul.c4
-rw-r--r--drivers/cpufreq/pxa3xx-cpufreq.c2
-rw-r--r--drivers/cpufreq/s3c24xx-cpufreq.c2
-rw-r--r--drivers/cpufreq/scmi-cpufreq.c4
-rw-r--r--drivers/cpufreq/sfi-cpufreq.c4
-rw-r--r--drivers/cpufreq/spear-cpufreq.c2
14 files changed, 89 insertions, 31 deletions
diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c
index 32ba4bc972e7..b61f4ec43e06 100644
--- a/drivers/cpufreq/acpi-cpufreq.c
+++ b/drivers/cpufreq/acpi-cpufreq.c
@@ -759,8 +759,8 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
goto err_unreg;
}
- freq_table = kzalloc(sizeof(*freq_table) *
- (perf->state_count+1), GFP_KERNEL);
+ freq_table = kcalloc(perf->state_count + 1, sizeof(*freq_table),
+ GFP_KERNEL);
if (!freq_table) {
result = -ENOMEM;
goto err_unreg;
diff --git a/drivers/cpufreq/arm_big_little.c b/drivers/cpufreq/arm_big_little.c
index 1d7ef5fc1977..cf62a1f64dd7 100644
--- a/drivers/cpufreq/arm_big_little.c
+++ b/drivers/cpufreq/arm_big_little.c
@@ -280,7 +280,7 @@ static int merge_cluster_tables(void)
for (i = 0; i < MAX_CLUSTERS; i++)
count += get_table_count(freq_table[i]);
- table = kzalloc(sizeof(*table) * count, GFP_KERNEL);
+ table = kcalloc(count, sizeof(*table), GFP_KERNEL);
if (!table)
return -ENOMEM;
diff --git a/drivers/cpufreq/bmips-cpufreq.c b/drivers/cpufreq/bmips-cpufreq.c
index 1653151b77df..56a4ebbf00e0 100644
--- a/drivers/cpufreq/bmips-cpufreq.c
+++ b/drivers/cpufreq/bmips-cpufreq.c
@@ -71,7 +71,7 @@ bmips_cpufreq_get_freq_table(const struct cpufreq_policy *policy)
cpu_freq = htp_freq_to_cpu_freq(priv->clk_mult);
- table = kmalloc((priv->max_freqs + 1) * sizeof(*table), GFP_KERNEL);
+ table = kmalloc_array(priv->max_freqs + 1, sizeof(*table), GFP_KERNEL);
if (!table)
return ERR_PTR(-ENOMEM);
diff --git a/drivers/cpufreq/brcmstb-avs-cpufreq.c b/drivers/cpufreq/brcmstb-avs-cpufreq.c
index b07559b9ed99..e6f9cbe5835f 100644
--- a/drivers/cpufreq/brcmstb-avs-cpufreq.c
+++ b/drivers/cpufreq/brcmstb-avs-cpufreq.c
@@ -410,7 +410,7 @@ brcm_avs_get_freq_table(struct device *dev, struct private_data *priv)
if (ret)
return ERR_PTR(ret);
- table = devm_kzalloc(dev, (AVS_PSTATE_MAX + 1) * sizeof(*table),
+ table = devm_kcalloc(dev, AVS_PSTATE_MAX + 1, sizeof(*table),
GFP_KERNEL);
if (!table)
return ERR_PTR(-ENOMEM);
diff --git a/drivers/cpufreq/cppc_cpufreq.c b/drivers/cpufreq/cppc_cpufreq.c
index b15115a48775..a9d3eec32795 100644
--- a/drivers/cpufreq/cppc_cpufreq.c
+++ b/drivers/cpufreq/cppc_cpufreq.c
@@ -42,9 +42,6 @@
*/
static struct cppc_cpudata **all_cpu_data;
-/* Capture the max KHz from DMI */
-static u64 cppc_dmi_max_khz;
-
/* Callback function used to retrieve the max frequency from DMI */
static void cppc_find_dmi_mhz(const struct dmi_header *dm, void *private)
{
@@ -75,6 +72,64 @@ static u64 cppc_get_dmi_max_khz(void)
return (1000 * mhz);
}
+/*
+ * If CPPC lowest_freq and nominal_freq registers are exposed then we can
+ * use them to convert perf to freq and vice versa
+ *
+ * If the perf/freq point lies between Nominal and Lowest, we can treat
+ * (Low perf, Low freq) and (Nom Perf, Nom freq) as 2D co-ordinates of a line
+ * and extrapolate the rest
+ * For perf/freq > Nominal, we use the ratio perf:freq at Nominal for conversion
+ */
+static unsigned int cppc_cpufreq_perf_to_khz(struct cppc_cpudata *cpu,
+ unsigned int perf)
+{
+ static u64 max_khz;
+ struct cppc_perf_caps *caps = &cpu->perf_caps;
+ u64 mul, div;
+
+ if (caps->lowest_freq && caps->nominal_freq) {
+ if (perf >= caps->nominal_perf) {
+ mul = caps->nominal_freq;
+ div = caps->nominal_perf;
+ } else {
+ mul = caps->nominal_freq - caps->lowest_freq;
+ div = caps->nominal_perf - caps->lowest_perf;
+ }
+ } else {
+ if (!max_khz)
+ max_khz = cppc_get_dmi_max_khz();
+ mul = max_khz;
+ div = cpu->perf_caps.highest_perf;
+ }
+ return (u64)perf * mul / div;
+}
+
+static unsigned int cppc_cpufreq_khz_to_perf(struct cppc_cpudata *cpu,
+ unsigned int freq)
+{
+ static u64 max_khz;
+ struct cppc_perf_caps *caps = &cpu->perf_caps;
+ u64 mul, div;
+
+ if (caps->lowest_freq && caps->nominal_freq) {
+ if (freq >= caps->nominal_freq) {
+ mul = caps->nominal_perf;
+ div = caps->nominal_freq;
+ } else {
+ mul = caps->lowest_perf;
+ div = caps->lowest_freq;
+ }
+ } else {
+ if (!max_khz)
+ max_khz = cppc_get_dmi_max_khz();
+ mul = cpu->perf_caps.highest_perf;
+ div = max_khz;
+ }
+
+ return (u64)freq * mul / div;
+}
+
static int cppc_cpufreq_set_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
@@ -86,7 +141,7 @@ static int cppc_cpufreq_set_target(struct cpufreq_policy *policy,
cpu = all_cpu_data[policy->cpu];
- desired_perf = (u64)target_freq * cpu->perf_caps.highest_perf / cppc_dmi_max_khz;
+ desired_perf = cppc_cpufreq_khz_to_perf(cpu, target_freq);
/* Return if it is exactly the same perf */
if (desired_perf == cpu->perf_ctrls.desired_perf)
return ret;
@@ -186,24 +241,24 @@ static int cppc_cpufreq_cpu_init(struct cpufreq_policy *policy)
return ret;
}
- cppc_dmi_max_khz = cppc_get_dmi_max_khz();
+ /* Convert the lowest and nominal freq from MHz to KHz */
+ cpu->perf_caps.lowest_freq *= 1000;
+ cpu->perf_caps.nominal_freq *= 1000;
/*
* Set min to lowest nonlinear perf to avoid any efficiency penalty (see
* Section 8.4.7.1.1.5 of ACPI 6.1 spec)
*/
- policy->min = cpu->perf_caps.lowest_nonlinear_perf * cppc_dmi_max_khz /
- cpu->perf_caps.highest_perf;
- policy->max = cppc_dmi_max_khz;
+ policy->min = cppc_cpufreq_perf_to_khz(cpu, cpu->perf_caps.lowest_nonlinear_perf);
+ policy->max = cppc_cpufreq_perf_to_khz(cpu, cpu->perf_caps.highest_perf);
/*
* Set cpuinfo.min_freq to Lowest to make the full range of performance
* available if userspace wants to use any perf between lowest & lowest
* nonlinear perf
*/
- policy->cpuinfo.min_freq = cpu->perf_caps.lowest_perf * cppc_dmi_max_khz /
- cpu->perf_caps.highest_perf;
- policy->cpuinfo.max_freq = cppc_dmi_max_khz;
+ policy->cpuinfo.min_freq = cppc_cpufreq_perf_to_khz(cpu, cpu->perf_caps.lowest_perf);
+ policy->cpuinfo.max_freq = cppc_cpufreq_perf_to_khz(cpu, cpu->perf_caps.highest_perf);
policy->transition_delay_us = cppc_cpufreq_get_transition_delay_us(cpu_num);
policy->shared_type = cpu->shared_type;
@@ -229,7 +284,8 @@ static int cppc_cpufreq_cpu_init(struct cpufreq_policy *policy)
cpu->cur_policy = policy;
/* Set policy->cur to max now. The governors will adjust later. */
- policy->cur = cppc_dmi_max_khz;
+ policy->cur = cppc_cpufreq_perf_to_khz(cpu,
+ cpu->perf_caps.highest_perf);
cpu->perf_ctrls.desired_perf = cpu->perf_caps.highest_perf;
ret = cppc_set_perf(cpu_num, &cpu->perf_ctrls);
@@ -257,7 +313,8 @@ static int __init cppc_cpufreq_init(void)
if (acpi_disabled)
return -ENODEV;
- all_cpu_data = kzalloc(sizeof(void *) * num_possible_cpus(), GFP_KERNEL);
+ all_cpu_data = kcalloc(num_possible_cpus(), sizeof(void *),
+ GFP_KERNEL);
if (!all_cpu_data)
return -ENOMEM;
diff --git a/drivers/cpufreq/ia64-acpi-cpufreq.c b/drivers/cpufreq/ia64-acpi-cpufreq.c
index 7974a2fdb760..dd5440d3372d 100644
--- a/drivers/cpufreq/ia64-acpi-cpufreq.c
+++ b/drivers/cpufreq/ia64-acpi-cpufreq.c
@@ -241,8 +241,8 @@ acpi_cpufreq_cpu_init (
}
/* alloc freq_table */
- freq_table = kzalloc(sizeof(*freq_table) *
- (data->acpi_data.state_count + 1),
+ freq_table = kcalloc(data->acpi_data.state_count + 1,
+ sizeof(*freq_table),
GFP_KERNEL);
if (!freq_table) {
result = -ENOMEM;
diff --git a/drivers/cpufreq/imx6q-cpufreq.c b/drivers/cpufreq/imx6q-cpufreq.c
index f094687cae52..8b3c2a79ad6c 100644
--- a/drivers/cpufreq/imx6q-cpufreq.c
+++ b/drivers/cpufreq/imx6q-cpufreq.c
@@ -394,7 +394,8 @@ static int imx6q_cpufreq_probe(struct platform_device *pdev)
}
/* Make imx6_soc_volt array's size same as arm opp number */
- imx6_soc_volt = devm_kzalloc(cpu_dev, sizeof(*imx6_soc_volt) * num, GFP_KERNEL);
+ imx6_soc_volt = devm_kcalloc(cpu_dev, num, sizeof(*imx6_soc_volt),
+ GFP_KERNEL);
if (imx6_soc_volt == NULL) {
ret = -ENOMEM;
goto free_freq_table;
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 352d5b2d5b58..1de5ec8d5ea3 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -2512,7 +2512,7 @@ hwp_cpu_matched:
pr_info("Intel P-state driver initializing\n");
- all_cpu_data = vzalloc(sizeof(void *) * num_possible_cpus());
+ all_cpu_data = vzalloc(array_size(sizeof(void *), num_possible_cpus()));
if (!all_cpu_data)
return -ENOMEM;
diff --git a/drivers/cpufreq/longhaul.c b/drivers/cpufreq/longhaul.c
index 61a4c5b08219..279bd9e9fa95 100644
--- a/drivers/cpufreq/longhaul.c
+++ b/drivers/cpufreq/longhaul.c
@@ -474,8 +474,8 @@ static int longhaul_get_ranges(void)
return -EINVAL;
}
- longhaul_table = kzalloc((numscales + 1) * sizeof(*longhaul_table),
- GFP_KERNEL);
+ longhaul_table = kcalloc(numscales + 1, sizeof(*longhaul_table),
+ GFP_KERNEL);
if (!longhaul_table)
return -ENOMEM;
diff --git a/drivers/cpufreq/pxa3xx-cpufreq.c b/drivers/cpufreq/pxa3xx-cpufreq.c
index 7acc7fa4536d..9daa2cc318bb 100644
--- a/drivers/cpufreq/pxa3xx-cpufreq.c
+++ b/drivers/cpufreq/pxa3xx-cpufreq.c
@@ -93,7 +93,7 @@ static int setup_freqs_table(struct cpufreq_policy *policy,
struct cpufreq_frequency_table *table;
int i;
- table = kzalloc((num + 1) * sizeof(*table), GFP_KERNEL);
+ table = kcalloc(num + 1, sizeof(*table), GFP_KERNEL);
if (table == NULL)
return -ENOMEM;
diff --git a/drivers/cpufreq/s3c24xx-cpufreq.c b/drivers/cpufreq/s3c24xx-cpufreq.c
index 909bd6e27639..3b291a2b0cb3 100644
--- a/drivers/cpufreq/s3c24xx-cpufreq.c
+++ b/drivers/cpufreq/s3c24xx-cpufreq.c
@@ -562,7 +562,7 @@ static int s3c_cpufreq_build_freq(void)
size = cpu_cur.info->calc_freqtable(&cpu_cur, NULL, 0);
size++;
- ftab = kzalloc(sizeof(*ftab) * size, GFP_KERNEL);
+ ftab = kcalloc(size, sizeof(*ftab), GFP_KERNEL);
if (!ftab)
return -ENOMEM;
diff --git a/drivers/cpufreq/scmi-cpufreq.c b/drivers/cpufreq/scmi-cpufreq.c
index b4dbc77459b6..50b1551ba894 100644
--- a/drivers/cpufreq/scmi-cpufreq.c
+++ b/drivers/cpufreq/scmi-cpufreq.c
@@ -117,7 +117,7 @@ static int scmi_cpufreq_init(struct cpufreq_policy *policy)
return -ENODEV;
}
- ret = handle->perf_ops->add_opps_to_device(handle, cpu_dev);
+ ret = handle->perf_ops->device_opps_add(handle, cpu_dev);
if (ret) {
dev_warn(cpu_dev, "failed to add opps to the device\n");
return ret;
@@ -164,7 +164,7 @@ static int scmi_cpufreq_init(struct cpufreq_policy *policy)
/* SCMI allows DVFS request for any domain from any CPU */
policy->dvfs_possible_from_any_cpu = true;
- latency = handle->perf_ops->get_transition_latency(handle, cpu_dev);
+ latency = handle->perf_ops->transition_latency_get(handle, cpu_dev);
if (!latency)
latency = CPUFREQ_ETERNAL;
diff --git a/drivers/cpufreq/sfi-cpufreq.c b/drivers/cpufreq/sfi-cpufreq.c
index 9767afe05da2..978770432b13 100644
--- a/drivers/cpufreq/sfi-cpufreq.c
+++ b/drivers/cpufreq/sfi-cpufreq.c
@@ -95,8 +95,8 @@ static int __init sfi_cpufreq_init(void)
if (ret)
return ret;
- freq_table = kzalloc(sizeof(*freq_table) *
- (num_freq_table_entries + 1), GFP_KERNEL);
+ freq_table = kcalloc(num_freq_table_entries + 1, sizeof(*freq_table),
+ GFP_KERNEL);
if (!freq_table) {
ret = -ENOMEM;
goto err_free_array;
diff --git a/drivers/cpufreq/spear-cpufreq.c b/drivers/cpufreq/spear-cpufreq.c
index 195f27f9c1cb..4074e2615522 100644
--- a/drivers/cpufreq/spear-cpufreq.c
+++ b/drivers/cpufreq/spear-cpufreq.c
@@ -195,7 +195,7 @@ static int spear_cpufreq_probe(struct platform_device *pdev)
cnt = prop->length / sizeof(u32);
val = prop->value;
- freq_tbl = kzalloc(sizeof(*freq_tbl) * (cnt + 1), GFP_KERNEL);
+ freq_tbl = kcalloc(cnt + 1, sizeof(*freq_tbl), GFP_KERNEL);
if (!freq_tbl) {
ret = -ENOMEM;
goto out_put_node;
generated by cgit v1.2.3 (git 2.39.0) at 2024-08-11 02:01:07 +0300