| fam15h_power.c (4b4193256c8d3bc3a5397b5cd9494c2ad386317d) | fam15h_power.c (e104d530f3734c7666edf86bbf1b83b1bfafe6ee) |
|---|---|
| 1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * fam15h_power.c - AMD Family 15h processor power monitoring 4 * 5 * Copyright (c) 2011-2016 Advanced Micro Devices, Inc. 6 * Author: Andreas Herrmann <herrmann.der.user@googlemail.com> 7 */ 8 --- 152 unchanged lines hidden (view full) --- 161 int ret, cpu; 162 163 ret = zalloc_cpumask_var(&mask, GFP_KERNEL); 164 if (!ret) 165 return -ENOMEM; 166 167 memset(data->cu_on, 0, sizeof(int) * MAX_CUS); 168 | 1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * fam15h_power.c - AMD Family 15h processor power monitoring 4 * 5 * Copyright (c) 2011-2016 Advanced Micro Devices, Inc. 6 * Author: Andreas Herrmann <herrmann.der.user@googlemail.com> 7 */ 8 --- 152 unchanged lines hidden (view full) --- 161 int ret, cpu; 162 163 ret = zalloc_cpumask_var(&mask, GFP_KERNEL); 164 if (!ret) 165 return -ENOMEM; 166 167 memset(data->cu_on, 0, sizeof(int) * MAX_CUS); 168 |
| 169 get_online_cpus(); | 169 cpus_read_lock(); |
| 170 171 /* 172 * Choose the first online core of each compute unit, and then 173 * read their MSR value of power and ptsc in a single IPI, 174 * because the MSR value of CPU core represent the compute 175 * unit's. 176 */ 177 core = -1; --- 7 unchanged lines hidden (view full) --- 185 core = this_core; 186 187 /* get any CPU on this compute unit */ 188 cpumask_set_cpu(cpumask_any(topology_sibling_cpumask(cpu)), mask); 189 } 190 191 on_each_cpu_mask(mask, do_read_registers_on_cu, data, true); 192 | 170 171 /* 172 * Choose the first online core of each compute unit, and then 173 * read their MSR value of power and ptsc in a single IPI, 174 * because the MSR value of CPU core represent the compute 175 * unit's. 176 */ 177 core = -1; --- 7 unchanged lines hidden (view full) --- 185 core = this_core; 186 187 /* get any CPU on this compute unit */ 188 cpumask_set_cpu(cpumask_any(topology_sibling_cpumask(cpu)), mask); 189 } 190 191 on_each_cpu_mask(mask, do_read_registers_on_cu, data, true); 192 |
| 193 put_online_cpus(); | 193 cpus_read_unlock(); |
| 194 free_cpumask_var(mask); 195 196 return 0; 197} 198 199static ssize_t power1_average_show(struct device *dev, 200 struct device_attribute *attr, char *buf) 201{ --- 299 unchanged lines hidden --- | 194 free_cpumask_var(mask); 195 196 return 0; 197} 198 199static ssize_t power1_average_show(struct device *dev, 200 struct device_attribute *attr, char *buf) 201{ --- 299 unchanged lines hidden --- |