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Wysocki wrote: > On Fri, Jun 27, 2025 at 12:28 AM Mario Limonciello > wrote: >> >> On 6/26/2025 4:46 AM, Ulf Hansson wrote: >>> On Mon, 23 Jun 2025 at 14:55, Rafael J. Wysocki wrote: >>>> >>>> Hi Everyone, >>>> >>>> These two patches complement the recently made PM core changes related to >>>> the async suspend and resume of devices. They should apply on top of >>>> 6.16-rc3. >>>> >>>> They were sent along with the other changes mentioned above: >>>> >>>> https://lore.kernel.org/linux-pm/2229735.Mh6RI2rZIc@rjwysocki.net/ >>>> https://lore.kernel.org/linux-pm/2651185.Lt9SDvczpP@rjwysocki.net/ >>>> >>>> (and this is v4 because they have been rebased in the meantime), but they don't >>>> make any difference on my test-bed x86 systems, so I'd appreciate a confirmation >>>> that they are actually needed on ARM (or another architecture using DT). >>>> >>>> Thanks! >>> >>> Hi Rafael, >>> >>> I haven't yet got the time to test these, but the code looks good to >>> me, so feel free to add for the series: >>> >>> Reviewed-by: Ulf Hansson >>> >>> Kind regards >>> Uffe >> >> I passed this series to some internal guys to test on a wide variety of >> AMD x86 hardware. The initial testing looks good. >> Will keep you apprised if anything pops up. > > Thanks! > > It would also help if you could check whether or not there is any > measurable performance (that is, system suspend and resume time) > difference between "before" and "after". Sure thing. Just to make sure we have an aligned measurement methodology: I asked them to do this both with and without the patches. * set /sys/power/pm_debug_messages before running and then capture all the timing prints. * add up all suspend events and get a total * add up all resume events and get a total * repeat 5 times * calculate averages for the 5 runs