From: Zhang Rui <rui.zhang@intel.com>
To: rjw@rjwysocki.net
Cc: linux-pm@vger.kernel.org, srinivas.pandruvada@intel.com,
rui.zhang@intel.com
Subject: [PATCH 00/13] intel_rapl: RAPL abstraction and MMIO RAPL support
Date: Tue, 25 Jun 2019 23:16:35 +0800 [thread overview]
Message-ID: <1561475808-24839-1-git-send-email-rui.zhang@intel.com> (raw)
Besideis MSR interface, RAPL can also be controlled via the MMIO interface,
by accessing the MCHBar registers exposed by the processor thermal device.
Currently, we only have RAPL MSR interface in Linux kernel, this brings
problems on some platforms that BIOS performs a low power limits via the
MMIO interface by default. This results in poor system performance,
and there is no way for us to change the MMIO MSR setting in Linux.
To fix this, RAPL MMIO interface support is introduced in this patch set.
Patch 1/13 to patch 11/13 abstract the RAPL code, and move all the shared
code into a separate file, intel_rapl_common.c, so that it can be used
by both MSR and MMIO interfaces.
Patch 12/13 introduced RAPL support via MMIO registers, exposed by the
processor thermal devices.
Patch 13/13 fixes a module autoloading issue found later.
The patch series has been tested on Dell XPS 9360, a SKL platform.
Note that this patch series are based on the -tip tree, which contains the
latest RAPL changes for multi-die support.
thanks,
rui
next reply other threads:[~2019-06-25 15:16 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-25 15:16 Zhang Rui [this message]
2019-06-25 15:16 ` [PATCH 01/13] intel_rapl: use reg instead of msr Zhang Rui
2019-06-25 15:16 ` [PATCH 02/13] intel_rapl: remove hardcoded register index Zhang Rui
2019-06-25 15:16 ` [PATCH 03/13] intel_rapl: introduce intel_rapl.h Zhang Rui
2019-06-25 15:16 ` [PATCH 04/13] intel_rapl: introduce struct rapl_private Zhang Rui
2019-06-25 15:16 ` [PATCH 05/13] intel_rapl: abstract register address Zhang Rui
2019-06-25 15:16 ` [PATCH 06/13] intel_rapl: abstract register access operations Zhang Rui
2019-06-25 15:16 ` [PATCH 07/13] intel_rapl: cleanup some functions Zhang Rui
2019-06-25 15:16 ` [PATCH 08/13] intel_rapl: cleanup hardcoded MSR access Zhang Rui
2019-06-25 15:16 ` [PATCH 09/13] intel_rapl: abstract RAPL common code Zhang Rui
2019-06-25 15:16 ` [PATCH 10/13] intel_rapl: support 64 bit register Zhang Rui
2019-06-25 15:16 ` [PATCH 11/13] intel_rapl: support two power limits for every RAPL domain Zhang Rui
2019-06-25 15:16 ` [PATCH 12/13] int340X/processor_thermal_device: add support for MMIO RAPL Zhang Rui
2019-06-25 15:52 ` Zhang Rui
2019-06-25 15:16 ` [PATCH 13/13] intel_rapl: Fix module autoloading issue Zhang Rui
2019-06-28 5:50 [PATCH 00/13] intel_rapl: RAPL abstraction and MMIO RAPL support Zhang Rui
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