linux-kernel - [PATCH 0/3] Make the cpuinfo_cur

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Date:   Wed, 25 Oct 2023 17:38:44 +0800
From:   Zeng Heng <zengheng4@...wei.com>
To:     <broonie@...nel.org>, <joey.gouly@....com>, <will@...nel.org>,
        <amit.kachhap@....com>, <rafael@...nel.org>,
        <catalin.marinas@....com>, <james.morse@....com>,
        <mark.rutland@....com>, <maz@...nel.org>,
        <viresh.kumar@...aro.org>, <sumitg@...dia.com>,
        <yang@...amperecomputing.com>
CC:     <linux-kernel@...r.kernel.org>, <linux-pm@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <wangxiongfeng2@...wei.com>, <xiexiuqi@...wei.com>
Subject: [PATCH 0/3] Make the cpuinfo_cur_freq interface read correctly

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(-)

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2.25.1