As part of looking at the hibernate code recently again I was considering
whether we really need the thaw stage at all when things are working well.
So I wanted to explore what breaks if we just skip it. This should speed
up the S4 sequence since nothing needs to resume.
If we do this we can drop the special cases in amdgpu and the exported
symbols too.
Mario Limonciello (3):
PM: hibernate: Nominally skip thaw sequence for all devices
drm/amd: Drop special cases for thaw() callback
PM: Drop pm_hibernate_is_recovering() and
pm_hibernation_mode_is_suspend()
drivers/base/power/main.c | 20 ++++++--------------
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 4 ----
include/linux/suspend.h | 8 --------
kernel/power/hibernate.c | 24 ++++++++++--------------
kernel/power/user.c | 3 +++
5 files changed, 19 insertions(+), 40 deletions(-)
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2.43.0
