From: Zhang Rui <rui.zhang@intel.com>
To: linux@roeck-us.net, jdelvare@suse.com, fenghua.yu@intel.com
Cc: linux-hwmon@vger.kernel.org, srinivas.pandruvada@linux.intel.com
Subject: [PATCH V2 0/3] hwmon (coretemp): Add support for dynamic tjmax/ttarget
Date: Sun, 13 Nov 2022 23:31:42 +0800 [thread overview]
Message-ID: <20221113153145.32696-1-rui.zhang@intel.com> (raw)
Tjmax value retrieved from MSR_IA32_TEMPERATURE_TARGET can be changed at
runtime when the Intel SST-PP (Intel Speed Select Technology - Performance
Profile) level is changed. As a result, the ttarget temperature also changes.
Enhance the coretemp driver to always use updated tjmax when it can be
retrieved from MSR_IA32_TEMPERATURE_TARGET.
When tjmax can not be retrieved from MSR_IA32_TEMPERATURE_TARGET, stick with
previous behavior and always use static value. Plus that ttarget is not
available in this case.
The same dynaimic tjmax enhancement, for driver/thermal drivers can be found
at https://patchwork.kernel.org/project/linux-pm/list/?series=693050
thanks,
rui
---
Changes since V1:
- rearrange the code to avoid forward declaration
- optimize logic to check target temperature support only once
- coding style changes
next reply other threads:[~2022-11-13 15:29 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-13 15:31 Zhang Rui [this message]
2022-11-13 15:31 ` [PATCH V2 1/3] hwmon (coretemp): rearrange tjmax handing code Zhang Rui
2022-11-14 23:21 ` Guenter Roeck
2022-11-13 15:31 ` [PATCH V2 2/3] hwmon (coretemp): Add support for dynamic tjmax Zhang Rui
2022-11-14 23:24 ` Guenter Roeck
2022-11-13 15:31 ` [PATCH V2 3/3] hwmon (coretemp): Add support for dynamic ttarget Zhang Rui
2022-11-14 23:25 ` Guenter Roeck
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