[PATCH] remove CONFIG_ANDROID
Jason A. Donenfeld
Jason at zx2c4.com
Wed Jun 29 17:34:58 UTC 2022
On Wed, Jun 29, 2022 at 06:38:09PM +0200, Jason A. Donenfeld wrote:
> On the technical topic, an Android developer friend following this
> thread just pointed out to me that Android doesn't use PM_AUTOSLEEP and
> just has userspace causing suspend frequently. So by his rough
> estimation your patch actually *will* break Android devices. Zoinks.
> Maybe he's right, maybe he's not -- I don't know -- but you should
> probably look into this if you want this patch to land without breakage.
More details: https://cs.android.com/android/platform/superproject/+/master:system/core/libsuspend/autosuspend_wakeup_count.cpp;bpv=1;bpt=1;l=52?q=%22%2Fsys%2Fpower%2Fstate%22&start=51&gsn=sys_power_state&gs=kythe%3A%2F%2Fandroid.googlesource.com%2Fplatform%2Fsuperproject%3Flang%3Dc%252B%252B%3Fpath%3Dsystem%2Fcore%2Flibsuspend%2Fautosuspend_wakeup_count.cpp%23ftWlDJuOhS_2fn3Ri7rClxA30blj_idGgT12aoUHd1o
So indeed it looks like it's userspace controlled. If you want this to
be a runtime, rather than a compiletime, switch, maybe
autosuspend_init() of that file could write to a sysctl.
Who at Google "owns" that code? Can somebody CC them in?
Jason
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