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[v13,0/4] Invoke rpmh_flush for non OSI targets

Message ID 1583746236-13325-1-git-send-email-mkshah@codeaurora.org (mailing list archive)
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Series Invoke rpmh_flush for non OSI targets | expand

Message

Maulik Shah March 9, 2020, 9:30 a.m. UTC
Changes in v13:
- Address Stephen's comment to maintain COMPILE_TEST
- Address Doug's comments and add new APIs for start and end transaction

Changes in v12:
- Kconfig change to remove COMPILE_TEST was dropped in v11, reinclude it.

Changes in v11:
- Address Doug's comments on change 2 and 3
- Include change to invalidate TCSes before flush from [4]

Changes in v10:
- Address Evan's comments to update commit message on change 2
- Add Evan's Reviewed by on change 2
- Remove comment from rpmh_flush() related to last CPU invoking it
- Rebase all changes on top of next-20200302

Changes in v9:
- Keep rpmh_flush() to invoke from within cache_lock
- Remove comments related to only last cpu invoking rpmh_flush()

Changes in v8:
- Address Stephen's comments on changes 2 and 3
- Add Reviewed by from Stephen on change 1

Changes in v7:
- Address Srinivas's comments to update commit text
- Add Reviewed by from Srinivas

Changes in v6:
- Drop 1 & 2 changes from v5 as they already landed in maintainer tree
- Drop 3 & 4 changes from v5 as no user at present for power domain in rsc
- Rename subject to appropriate since power domain changes are dropped
- Rebase other changes on top of next-20200221

Changes in v5:
- Add Rob's Acked by on dt-bindings change
- Drop firmware psci change
- Update cpuidle stats in dtsi to follow PC mode
- Include change to update dirty flag when data is updated from [4]
- Add change to invoke rpmh_flush when caches are dirty

Changes in v4:
- Add change to allow hierarchical topology in PC mode
- Drop hierarchical domain idle states converter from v3
- Address Merge sc7180 dtsi change to add low power modes

Changes in v3:
- Address Rob's comment on dt property value
- Address Stephen's comments on rpmh-rsc driver change
- Include sc7180 cpuidle low power mode changes from [1]
- Include hierarchical domain idle states converter change from [2]

Changes in v2:
- Add Stephen's Reviewed-By to the first three patches
- Addressed Stephen's comments on fourth patch
- Include changes to connect rpmh domain to cpuidle and genpds

Resource State Coordinator (RSC) is responsible for powering off/lowering
the requirements from CPU subsystem for the associated hardware like buses,
clocks, and regulators when all CPUs and cluster is powered down.

RSC power domain uses last-man activities provided by genpd framework based
on Ulf Hansoon's patch series[3], when the cluster of CPUs enter deepest
idle states. As a part of domain poweroff, RSC can lower resource state
requirements by flushing the cached sleep and wake state votes for various
resources.

[1] https://patchwork.kernel.org/patch/11218965
[2] https://patchwork.kernel.org/patch/10941671
[3] https://patchwork.kernel.org/project/linux-arm-msm/list/?series=222355
[4] https://patchwork.kernel.org/project/linux-arm-msm/list/?series=236503

Maulik Shah (3):
  arm64: dts: qcom: sc7180: Add cpuidle low power states
  soc: qcom: rpmh: Update dirty flag only when data changes
  soc: qcom: rpmh: Invoke rpmh_flush for dirty caches

 arch/arm64/boot/dts/qcom/sc7180.dtsi | 78 ++++++++++++++++++++++++++++++++++++
 drivers/soc/qcom/rpmh.c              | 27 ++++++++++---
 2 files changed, 100 insertions(+), 5 deletions(-)

Comments

Doug Anderson March 9, 2020, 11:42 p.m. UTC | #1
Hi,

On Mon, Mar 9, 2020 at 2:31 AM Maulik Shah <mkshah@codeaurora.org> wrote:
>
> Changes in v13:
> - Address Stephen's comment to maintain COMPILE_TEST
> - Address Doug's comments and add new APIs for start and end transaction
>
> Changes in v12:
> - Kconfig change to remove COMPILE_TEST was dropped in v11, reinclude it.
>
> Changes in v11:
> - Address Doug's comments on change 2 and 3
> - Include change to invalidate TCSes before flush from [4]
>
> Changes in v10:
> - Address Evan's comments to update commit message on change 2
> - Add Evan's Reviewed by on change 2
> - Remove comment from rpmh_flush() related to last CPU invoking it
> - Rebase all changes on top of next-20200302
>
> Changes in v9:
> - Keep rpmh_flush() to invoke from within cache_lock
> - Remove comments related to only last cpu invoking rpmh_flush()
>
> Changes in v8:
> - Address Stephen's comments on changes 2 and 3
> - Add Reviewed by from Stephen on change 1
>
> Changes in v7:
> - Address Srinivas's comments to update commit text
> - Add Reviewed by from Srinivas
>
> Changes in v6:
> - Drop 1 & 2 changes from v5 as they already landed in maintainer tree
> - Drop 3 & 4 changes from v5 as no user at present for power domain in rsc
> - Rename subject to appropriate since power domain changes are dropped
> - Rebase other changes on top of next-20200221
>
> Changes in v5:
> - Add Rob's Acked by on dt-bindings change
> - Drop firmware psci change
> - Update cpuidle stats in dtsi to follow PC mode
> - Include change to update dirty flag when data is updated from [4]
> - Add change to invoke rpmh_flush when caches are dirty
>
> Changes in v4:
> - Add change to allow hierarchical topology in PC mode
> - Drop hierarchical domain idle states converter from v3
> - Address Merge sc7180 dtsi change to add low power modes
>
> Changes in v3:
> - Address Rob's comment on dt property value
> - Address Stephen's comments on rpmh-rsc driver change
> - Include sc7180 cpuidle low power mode changes from [1]
> - Include hierarchical domain idle states converter change from [2]
>
> Changes in v2:
> - Add Stephen's Reviewed-By to the first three patches
> - Addressed Stephen's comments on fourth patch
> - Include changes to connect rpmh domain to cpuidle and genpds
>
> Resource State Coordinator (RSC) is responsible for powering off/lowering
> the requirements from CPU subsystem for the associated hardware like buses,
> clocks, and regulators when all CPUs and cluster is powered down.
>
> RSC power domain uses last-man activities provided by genpd framework based
> on Ulf Hansoon's patch series[3], when the cluster of CPUs enter deepest
> idle states. As a part of domain poweroff, RSC can lower resource state
> requirements by flushing the cached sleep and wake state votes for various
> resources.
>
> [1] https://patchwork.kernel.org/patch/11218965
> [2] https://patchwork.kernel.org/patch/10941671
> [3] https://patchwork.kernel.org/project/linux-arm-msm/list/?series=222355
> [4] https://patchwork.kernel.org/project/linux-arm-msm/list/?series=236503
>
> Maulik Shah (3):
>   arm64: dts: qcom: sc7180: Add cpuidle low power states
>   soc: qcom: rpmh: Update dirty flag only when data changes
>   soc: qcom: rpmh: Invoke rpmh_flush for dirty caches
>
>  arch/arm64/boot/dts/qcom/sc7180.dtsi | 78 ++++++++++++++++++++++++++++++++++++
>  drivers/soc/qcom/rpmh.c              | 27 ++++++++++---
>  2 files changed, 100 insertions(+), 5 deletions(-)

Did you happen to get a chance to test your patch against my cleanup /
documentation patch?  AKA:

https://lore.kernel.org/r/20200306235951.214678-1-dianders@chromium.org

-Doug
Maulik Shah March 10, 2020, 11:49 a.m. UTC | #2
On 3/10/2020 5:12 AM, Doug Anderson wrote:
> Hi,
>
> On Mon, Mar 9, 2020 at 2:31 AM Maulik Shah <mkshah@codeaurora.org> wrote:
>> Changes in v13:
>> - Address Stephen's comment to maintain COMPILE_TEST
>> - Address Doug's comments and add new APIs for start and end transaction
>>
>> Changes in v12:
>> - Kconfig change to remove COMPILE_TEST was dropped in v11, reinclude it.
>>
>> Changes in v11:
>> - Address Doug's comments on change 2 and 3
>> - Include change to invalidate TCSes before flush from [4]
>>
>> Changes in v10:
>> - Address Evan's comments to update commit message on change 2
>> - Add Evan's Reviewed by on change 2
>> - Remove comment from rpmh_flush() related to last CPU invoking it
>> - Rebase all changes on top of next-20200302
>>
>> Changes in v9:
>> - Keep rpmh_flush() to invoke from within cache_lock
>> - Remove comments related to only last cpu invoking rpmh_flush()
>>
>> Changes in v8:
>> - Address Stephen's comments on changes 2 and 3
>> - Add Reviewed by from Stephen on change 1
>>
>> Changes in v7:
>> - Address Srinivas's comments to update commit text
>> - Add Reviewed by from Srinivas
>>
>> Changes in v6:
>> - Drop 1 & 2 changes from v5 as they already landed in maintainer tree
>> - Drop 3 & 4 changes from v5 as no user at present for power domain in rsc
>> - Rename subject to appropriate since power domain changes are dropped
>> - Rebase other changes on top of next-20200221
>>
>> Changes in v5:
>> - Add Rob's Acked by on dt-bindings change
>> - Drop firmware psci change
>> - Update cpuidle stats in dtsi to follow PC mode
>> - Include change to update dirty flag when data is updated from [4]
>> - Add change to invoke rpmh_flush when caches are dirty
>>
>> Changes in v4:
>> - Add change to allow hierarchical topology in PC mode
>> - Drop hierarchical domain idle states converter from v3
>> - Address Merge sc7180 dtsi change to add low power modes
>>
>> Changes in v3:
>> - Address Rob's comment on dt property value
>> - Address Stephen's comments on rpmh-rsc driver change
>> - Include sc7180 cpuidle low power mode changes from [1]
>> - Include hierarchical domain idle states converter change from [2]
>>
>> Changes in v2:
>> - Add Stephen's Reviewed-By to the first three patches
>> - Addressed Stephen's comments on fourth patch
>> - Include changes to connect rpmh domain to cpuidle and genpds
>>
>> Resource State Coordinator (RSC) is responsible for powering off/lowering
>> the requirements from CPU subsystem for the associated hardware like buses,
>> clocks, and regulators when all CPUs and cluster is powered down.
>>
>> RSC power domain uses last-man activities provided by genpd framework based
>> on Ulf Hansoon's patch series[3], when the cluster of CPUs enter deepest
>> idle states. As a part of domain poweroff, RSC can lower resource state
>> requirements by flushing the cached sleep and wake state votes for various
>> resources.
>>
>> [1] https://patchwork.kernel.org/patch/11218965
>> [2] https://patchwork.kernel.org/patch/10941671
>> [3] https://patchwork.kernel.org/project/linux-arm-msm/list/?series=222355
>> [4] https://patchwork.kernel.org/project/linux-arm-msm/list/?series=236503
>>
>> Maulik Shah (3):
>>   arm64: dts: qcom: sc7180: Add cpuidle low power states
>>   soc: qcom: rpmh: Update dirty flag only when data changes
>>   soc: qcom: rpmh: Invoke rpmh_flush for dirty caches
>>
>>  arch/arm64/boot/dts/qcom/sc7180.dtsi | 78 ++++++++++++++++++++++++++++++++++++
>>  drivers/soc/qcom/rpmh.c              | 27 ++++++++++---
>>  2 files changed, 100 insertions(+), 5 deletions(-)
> Did you happen to get a chance to test your patch against my cleanup /
> documentation patch?  AKA:
>
> https://lore.kernel.org/r/20200306235951.214678-1-dianders@chromium.org
>
> -Doug
Hi Doug,

Not yet. i will update on your patches.

Thanks,
Maulik