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pm: optimize resources #39397

Merged
merged 7 commits into from Nov 19, 2021
Merged

pm: optimize resources #39397

merged 7 commits into from Nov 19, 2021

Commits on Nov 18, 2021

  1. drivers: interrupt_controller: i/loapic: use DEVICE_DEFINE 

    Define the device using DEVICE_DEFINE macro, so that a single option can
be used regardless of PM being enabled or not.

Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
    @gmarull
    gmarull committed Nov 18, 2021
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  2. device: remove PM capability from SYS_DEVICE_DEFINE 

    The macro already mentions in the docstrings that PM is not supported:

"Invokes DEVICE_DEFINE() with no power management support".

This patch removed the PM entry from the macro and ajusts its uses.

Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
    @gmarull
    gmarull committed Nov 18, 2021
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  3. pm: optimize resource usage 

    It is well known that PM subsystem has never been optimized in terms of
resource usage. The situation is particularly bad in case the PM runtime
API is enabled. What this patch does is to move the responsability of PM
resource definition to the device like this:

- Device is responsible to define PM resources, using a new set of
  macros: PM_DEVICE_*DEFINE().
- DEVICE_*DEFINE macro accepts a reference to the device PM state, which
  can be obtained using PM_DEVICE_*REF() set of macros. This
  allows device to initialize the dev->pm reference.

This method decouples a bit more PM from devices since devices just keep
a reference to the device PM state. It also means that future PM changes
will have less chances to impact all devices, but only devices that
support PM.

Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
    @gmarull
    gmarull committed Nov 18, 2021
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  4. drivers: use new PM macros 

    Port some drivers to the recently introduced macros to showcase its
usage and be able to do some initial testing (nRF52840).

Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
    @gmarull
    gmarull committed Nov 18, 2021
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  5. tests: pm: use new PM macros 

    Use PM_DEVICE_STATE_DEFINE to define PM state.

Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
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  6. samples: pm: use new PM macros 

    Use recently introduced PM macros to define device PM resources.

Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
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    gmarull committed Nov 18, 2021
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  7. tests: posix: common: increase main stack for TLS tests 

    Increase main stack size (in 128 bytes) to make these tests run
successfully on qemu_x86 platform.

Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
    @gmarull
    gmarull committed Nov 18, 2021
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