On Tue, Jul 14, 2020 at 3:44 PM Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx> wrote:> > On 2020-06-24 23:49:52 [+0200], Stephen Berman wrote: > > Let me summarize the thread here: > > On Stephen's system, ACPI informs the thermal zone driver to poll the > temperature every second and the driver does so. > The driver queries the temperature by invoking acpi_evaluate_integer() > which invokes (at some point) acpi_ev_queue_notify_request(). Well, I don't quite see how acpi_ev_queue_notify_request() can be invoked from the acpi_evaluate_integer() code path. Do you have a call trace showing that? > This then invokes acpi_os_execute_deferred() via > queue_work_on(, kacpi_notify_wq, ) > > acpi_os_execute_deferred() invokes acpi_ev_notify_dispatch() and this is > no longer synchronised with the initial acpi_evaluate_integer() request. That indeed would be the case, but I first need to understand what's going on with the acpi_evaluate_integer() causing a Notify () to be queued up. Cheers!
