[PATCH 0/3] Make the cpuinfo_cur_freq interface read correctly
Zeng Heng
zengheng4 at huawei.com
Wed Oct 25 02:38:44 PDT 2023
Patch 1~2: It is required to ensure that amu can continue to work normally
during the sample period while cstate is enabled.
Patch 3: Even works in the mmio mode, cpc_read still has random delay
errors, so let's extend the sampling time.
Zeng Heng (3):
arm64: cpufeature: Export cpu_has_amu_feat()
cpufreq: CPPC: Keep the target core awake when reading its cpufreq
rate
cpufreq: CPPC: Eliminate the impact of cpc_read() latency error
arch/arm64/kernel/cpufeature.c | 1 +
drivers/cpufreq/cppc_cpufreq.c | 53 ++++++++++++++++++++++++++++------
2 files changed, 45 insertions(+), 9 deletions(-)
--
2.25.1
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