[v1] drivers/cpufreq: gain accurate CPU frequency from cpufreq/scaling_cur_freq

[PATCH 0/2] drivers/cpufreq: gain accurate CPU frequency from cpufreq/scaling_cur_freq

Zeng Heng posted 2 patches 2 years, 8 months ago

Diff against v1

Only 0 patches received!

drivers/acpi/cppc_acpi.c       |  4 ++++
drivers/cpufreq/cppc_cpufreq.c | 30 ++++++++++++++++--------------
2 files changed, 20 insertions(+), 14 deletions(-)

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[PATCH 0/2] drivers/cpufreq: gain accurate CPU frequency from cpufreq/scaling_cur_freq

Posted by Zeng Heng 2 years, 8 months ago

When users want to get frequency by scaling_cur_freq under cpufreq sysfs,
they often get the invalid result like:

$ cat /sys/devices/system/cpu/cpu6/cpufreq/scaling_cur_freq
4294967295

So this series provides fixes to the concerned issue.

Zeng Heng (2):
  cpufreq: CPPC: keep target core awake when reading its cpufreq rate
  acpi: CPPC: read delivered_reg and reference_reg in critical section

 drivers/acpi/cppc_acpi.c       |  4 ++++
 drivers/cpufreq/cppc_cpufreq.c | 30 ++++++++++++++++--------------
 2 files changed, 20 insertions(+), 14 deletions(-)

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2.25.1