[Intel-gfx] [PATCH 0/2] split out intel_display_power

[Chris Wilson]

Quoting Daniele Ceraolo Spurio (2019-05-31 23:24:07)
> Separate the display PM from the PCI-level runtime PM.
> I'll follow this up with v2 of the rpm encapsulation series [1], but
> I'd like to get this in before that to avoid having to carry this
> big dumb diff in that series.

With RUNTIME_PM_DEBUG disabled,

add/remove: 3/1 grow/shrink: 6/8 up/down: 396/-393 (3)
Function                                     old     new   delta
intel_runtime_pm_release                       -     274    +274
intel_runtime_pm_put_raw                       -      45     +45
intel_runtime_pm_put_unchecked                10      48     +38
intel_display_power_put_async_work           179     192     +13
intel_display_power_flush_work               117     126      +9
__intel_display_power_put_async              193     199      +6
intel_runtime_pm_get_raw                       -       4      +4
intel_display_power_grab_async_put_ref       117     121      +4
__warned                                     469     472      +3
intel_runtime_pm_get                          10       7      -3
intel_power_domains_enable                    38      33      -5
intel_display_power_put_unchecked             23      18      -5
intel_display_power_get_if_enabled           143     138      -5
intel_display_power_get                       84      79      -5
intel_power_domains_suspend                  490     480     -10
intel_power_domains_fini_hw                  116     106     -10
release_async_put_domains                    220     203     -17
__intel_runtime_pm_put.constprop             333       -    -333
Total: Before=23394388, After=23394391, chg +0.00%

which is my biggest worry when meddling with these, that we accidentally
explode production code with unused debugging (all those wakerefs).

Lgtm, I would like Jani to indicate that he's happy with this split as
well since he has been looking at very similar ideas.
-Chris