diff options
| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2022-07-04 20:30:58 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2022-07-04 20:30:58 +0300 |
| commit | ca62229162a905b13f02e081767bf126f230ecc9 (patch) | |
| tree | 81698316c24402d87f7dcd217cfb5f1df29ae904 /drivers/cpufreq | |
| parent | 049b1ed9bef1e544ddca37e60debc809c3bd9f34 (diff) | |
| parent | d6f895965592d5cd2771860639219964df85d555 (diff) | |
| download | linux-ca62229162a905b13f02e081767bf126f230ecc9.tar.xz | |
Merge back earlier cpufreq material for 5.20.
Diffstat (limited to 'drivers/cpufreq')
| -rw-r--r-- | drivers/cpufreq/acpi-cpufreq.c | 4 | ||||
| -rw-r--r-- | drivers/cpufreq/cpufreq.c | 27 |
2 files changed, 13 insertions, 18 deletions
diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c index 3d514b82d055..1bb2b90ebb21 100644 --- a/drivers/cpufreq/acpi-cpufreq.c +++ b/drivers/cpufreq/acpi-cpufreq.c @@ -78,6 +78,8 @@ static bool boost_state(unsigned int cpu) switch (boot_cpu_data.x86_vendor) { case X86_VENDOR_INTEL: + case X86_VENDOR_CENTAUR: + case X86_VENDOR_ZHAOXIN: rdmsr_on_cpu(cpu, MSR_IA32_MISC_ENABLE, &lo, &hi); msr = lo | ((u64)hi << 32); return !(msr & MSR_IA32_MISC_ENABLE_TURBO_DISABLE); @@ -97,6 +99,8 @@ static int boost_set_msr(bool enable) switch (boot_cpu_data.x86_vendor) { case X86_VENDOR_INTEL: + case X86_VENDOR_CENTAUR: + case X86_VENDOR_ZHAOXIN: msr_addr = MSR_IA32_MISC_ENABLE; msr_mask = MSR_IA32_MISC_ENABLE_TURBO_DISABLE; break; diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 2cad42774164..73432360e6e9 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -843,12 +843,14 @@ ssize_t cpufreq_show_cpus(const struct cpumask *mask, char *buf) unsigned int cpu; for_each_cpu(cpu, mask) { - if (i) - i += scnprintf(&buf[i], (PAGE_SIZE - i - 2), " "); - i += scnprintf(&buf[i], (PAGE_SIZE - i - 2), "%u", cpu); + i += scnprintf(&buf[i], (PAGE_SIZE - i - 2), "%u ", cpu); if (i >= (PAGE_SIZE - 5)) break; } + + /* Remove the extra space at the end */ + i--; + i += sprintf(&buf[i], "\n"); return i; } @@ -971,21 +973,10 @@ static ssize_t store(struct kobject *kobj, struct attribute *attr, if (!fattr->store) return -EIO; - /* - * cpus_read_trylock() is used here to work around a circular lock - * dependency problem with respect to the cpufreq_register_driver(). - */ - if (!cpus_read_trylock()) - return -EBUSY; - - if (cpu_online(policy->cpu)) { - down_write(&policy->rwsem); - if (likely(!policy_is_inactive(policy))) - ret = fattr->store(policy, buf, count); - up_write(&policy->rwsem); - } - - cpus_read_unlock(); + down_write(&policy->rwsem); + if (likely(!policy_is_inactive(policy))) + ret = fattr->store(policy, buf, count); + up_write(&policy->rwsem); return ret; } |