| Message ID | 20250220151702.2153579-1-dedekind1@gmail.com (mailing list archive) |
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intel_idle: Add C1 demotion on/off sysfs knob
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From: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Version 2 of the patch. Find version 1 here: https://patches.linaro.org/project/linux-pm/list/?series=260892 I believe I addressed all the comments except for this one from Rafael Wysocki: "This is not the only place where MSR_PKG_CST_CONFIG_CONTROL gets updated. The other one is drivers/platform/x86/intel/pmc/cnp.c There is no real conflict because the PMC core thing happens during system suspend/resume on client platforms, but this is kind of duplicated code. Any chance to consolidate this?" This comment I am trying to address in a separate RFC patch that I am going to send very soon. Changelog v1->v2: * Address comments from Rafael Wysocki: 1. Rename the sysfs file from 'c1_demotion' to 'intel_c1_demotion' 2. Add a commentary about reading the feature only for 1 CPU. 3. Update Documentation/API (new patch 3/3). Artem Bityutskiy (3): intel_idle: Add C1 demotion on/off sysfs knob Documentation: admin-guide: pm: document intel_idle C1 demotion Documentation: ABI: testing: document the new cpuidle sysfs file .../ABI/testing/sysfs-devices-system-cpu | 7 +- Documentation/admin-guide/pm/intel_idle.rst | 21 ++++ drivers/idle/intel_idle.c | 103 ++++++++++++++++++ 3 files changed, 130 insertions(+), 1 deletion(-)