On Fri, Feb 13, 2026 at 12:30 AM Kuppuswamy Sathyanarayanan
<sathyanarayanan.kuppuswamy@linux.intel.com> wrote:
>
> Hi All,
>
> The Intel RAPL common driver has accumulated a significant amount of
> interface-specific logic over time. There is very little common code
> shared across the MSR, TPMI, and MMIO interface-specific defaults.
> Keeping these interface-specific defaults in the common layer therefore
> provides no real benefit and instead increases complexity and
> maintenance burden.
>
> As a first step toward cleaning this up, this series moves
> rapl_defaults ownership from the common driver into the individual
> interface drivers and allows each interface to provide its own defaults
> directly. Additional interface-specific cleanups in the RAPL common
> driver will be addressed in follow-up work. This series is a
> continuation of the earlier cleanup and refactoring effort initiated
> by Zhang Rui.
>
> Patch Summary:
>
> Patch 1-7/12: Preparatory patches that do code cleanups in intel_rapl_common
> driver.
> Patch 8/12: Preparatory patch that renames/declares the common functions.
> Patch 9/12: Move TPMI default settings from the common driver into the
> TPMI interface driver.
>
> Patch 10/12: Move MMIO default settings from the common driver into the
> MMIO interface driver.
>
> Patch 11/12: Register the PM notifier only when a RAPL package exists.
>
> Patch 12/12: Move MSR default settings from the common driver into the MSR
> interface driver.
>
> No functional changes are intended across the series. This is strictly a
> structural refactoring to simplify the common RAPL code and prepare it
> for further cleanups.
>
> Changes since v1:
> * Removed BIT(val) usage in divisions (David Laight).
> * Divided the cleanup patch into 4 patches for clarity.
> * Added Acked-by tag from Srinivas.
>
> Kuppuswamy Sathyanarayanan (12):
> powercap: intel_rapl: Add a symbol namespace for intel_rapl exports
> powercap: intel_rapl: Cleanup coding style
> powercap: intel_rapl: Remove unused TIME_WINDOW macros
> powercap: intel_rapl: Simplify rapl_compute_time_window_atom()
> powercap: intel_rapl: Use shifts for power-of-2 operations
> powercap: intel_rapl: Use GENMASK() and BIT() macros
> powercap: intel_rapl: Use unit conversion macros from units.h
> powercap: intel_rapl: Allow interface drivers to configure
> rapl_defaults
> powercap: intel_rapl: Move TPMI default settings into TPMI interface
> driver
> thermal: intel: int340x: processor: Move RAPL defaults to MMIO driver
> powercap: intel_rapl: Register PM notifier only when RAPL package
> exists
> powercap: intel_rapl: Move MSR default settings into MSR interface
> driver
>
> drivers/powercap/intel_rapl_common.c | 757 ++++++------------
> drivers/powercap/intel_rapl_msr.c | 251 +++++-
> drivers/powercap/intel_rapl_tpmi.c | 48 ++
> .../int340x_thermal/processor_thermal_rapl.c | 9 +
> include/linux/intel_rapl.h | 17 +-
> include/linux/units.h | 3 +
> 6 files changed, 562 insertions(+), 523 deletions(-)
>
> --
Whole series applied as 7.1 material, thanks!