| Message ID | 3534976.iIbC2pHGDl@kreacher |
|---|---|
| State | New |
| Headers | show |
| Series | thermal: ACPI: More ACPI thermal improvements and modification of thermal instances | expand |
On Tue, Sep 26, 2023 at 7:18 PM Daniel Lezcano <daniel.lezcano@linaro.org> wrote: > > On 21/09/2023 19:49, Rafael J. Wysocki wrote: > > From: Rafael J. Wysocki <rafael.j.wysocki@intel.com> > > > > In order to reduce code duplication, merge update_passive_devices() and > > update_active_devices() into one function called update_trip_devices() > > that will be used for updating both the passive and active trip points. > > > > No intentional functional impact. > > > > Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> > > --- > > drivers/acpi/thermal.c | 53 ++++++++++++++++++------------------------------- > > 1 file changed, 20 insertions(+), 33 deletions(-) > > > > Index: linux-pm/drivers/acpi/thermal.c > > =================================================================== > > --- linux-pm.orig/drivers/acpi/thermal.c > > +++ linux-pm/drivers/acpi/thermal.c > > @@ -43,6 +43,8 @@ > > #define ACPI_THERMAL_MAX_ACTIVE 10 > > #define ACPI_THERMAL_MAX_LIMIT_STR_LEN 65 > > > > +#define ACPI_THERMAL_TRIP_PASSIVE (-1) > > + > > /* > > * This exception is thrown out in two cases: > > * 1.An invalid trip point becomes invalid or a valid trip point becomes invalid > > @@ -202,18 +204,25 @@ static void acpi_thermal_update_passive_ > > ACPI_THERMAL_TRIPS_EXCEPTION(tz, "state"); > > } > > > > -static bool update_passive_devices(struct acpi_thermal *tz, bool compare) > > +static bool update_trip_devices(struct acpi_thermal *tz, > > + struct acpi_thermal_trip *acpi_trip, > > + int index, bool compare) > > { > > - struct acpi_thermal_trip *acpi_trip = &tz->trips.passive.trip; > > struct acpi_handle_list devices; > > + char method[] = "_PSL"; > > acpi_status status; > > > > + if (index != ACPI_THERMAL_TRIP_PASSIVE) { > > + method[1] = 'A'; > > + method[2] = 'L'; > > + method[3] = '0' + index; > > + } > > Could be index > 9 ? I can add a check, but it will never be called with index > 9 anyway.
On 26/09/2023 20:04, Rafael J. Wysocki wrote: > On Tue, Sep 26, 2023 at 7:56 PM Rafael J. Wysocki <rafael@kernel.org> wrote: >> >> On Tue, Sep 26, 2023 at 7:18 PM Daniel Lezcano >> <daniel.lezcano@linaro.org> wrote: >>> >>> On 21/09/2023 19:49, Rafael J. Wysocki wrote: >>>> From: Rafael J. Wysocki <rafael.j.wysocki@intel.com> >>>> >>>> In order to reduce code duplication, merge update_passive_devices() and >>>> update_active_devices() into one function called update_trip_devices() >>>> that will be used for updating both the passive and active trip points. >>>> >>>> No intentional functional impact. >>>> >>>> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> >>>> --- >>>> drivers/acpi/thermal.c | 53 ++++++++++++++++++------------------------------- [ ... ] >>>> + if (index != ACPI_THERMAL_TRIP_PASSIVE) { >>>> + method[1] = 'A'; >>>> + method[2] = 'L'; >>>> + method[3] = '0' + index; >>>> + } >>> >>> Could be index > 9 ? >> >> I can add a check, but it will never be called with index > 9 anyway. > > To be more precise, update_trip_devices() is called in two places, > acpi_thermal_init_trip() and acpi_thermal_update_trip_devices(). > > Both of these are called either with ACPI_THERMAL_TRIP_PASSIVE passed > as index, or from a loop over indices between 0 and > ACPI_THERMAL_MAX_ACTIVE-1 inclusive. Ok, thanks for clarifying
Index: linux-pm/drivers/acpi/thermal.c =================================================================== --- linux-pm.orig/drivers/acpi/thermal.c +++ linux-pm/drivers/acpi/thermal.c @@ -43,6 +43,8 @@ #define ACPI_THERMAL_MAX_ACTIVE 10 #define ACPI_THERMAL_MAX_LIMIT_STR_LEN 65 +#define ACPI_THERMAL_TRIP_PASSIVE (-1) + /* * This exception is thrown out in two cases: * 1.An invalid trip point becomes invalid or a valid trip point becomes invalid @@ -202,18 +204,25 @@ static void acpi_thermal_update_passive_ ACPI_THERMAL_TRIPS_EXCEPTION(tz, "state"); } -static bool update_passive_devices(struct acpi_thermal *tz, bool compare) +static bool update_trip_devices(struct acpi_thermal *tz, + struct acpi_thermal_trip *acpi_trip, + int index, bool compare) { - struct acpi_thermal_trip *acpi_trip = &tz->trips.passive.trip; struct acpi_handle_list devices; + char method[] = "_PSL"; acpi_status status; + if (index != ACPI_THERMAL_TRIP_PASSIVE) { + method[1] = 'A'; + method[2] = 'L'; + method[3] = '0' + index; + } + memset(&devices, 0, sizeof(devices)); - status = acpi_evaluate_reference(tz->device->handle, "_PSL", NULL, &devices); + status = acpi_evaluate_reference(tz->device->handle, method, NULL, &devices); if (ACPI_FAILURE(status)) { - acpi_handle_info(tz->device->handle, - "Missing device list for passive threshold\n"); + acpi_handle_info(tz->device->handle, "%s evaluation failure\n", method); return false; } @@ -231,8 +240,9 @@ static void acpi_thermal_update_passive_ if (!acpi_thermal_trip_valid(acpi_trip)) return; - if (update_passive_devices(tz, true)) + if (update_trip_devices(tz, acpi_trip, ACPI_THERMAL_TRIP_PASSIVE, true)) { return; + } acpi_trip->temperature = THERMAL_TEMP_INVALID; ACPI_THERMAL_TRIPS_EXCEPTION(tz, "state"); @@ -273,30 +283,6 @@ static void acpi_thermal_update_active_t ACPI_THERMAL_TRIPS_EXCEPTION(tz, "state"); } -static bool update_active_devices(struct acpi_thermal *tz, int index, bool compare) -{ - char method[] = { '_', 'A', 'L', '0' + index, '\0' }; - struct acpi_thermal_trip *acpi_trip = &tz->trips.active[index].trip; - struct acpi_handle_list devices; - acpi_status status; - - memset(&devices, 0, sizeof(devices)); - - status = acpi_evaluate_reference(tz->device->handle, method, NULL, &devices); - if (ACPI_FAILURE(status)) { - acpi_handle_info(tz->device->handle, - "Missing device list for active threshold %d\n", - index); - return false; - } - - if (compare && memcmp(&acpi_trip->devices, &devices, sizeof(devices))) - ACPI_THERMAL_TRIPS_EXCEPTION(tz, "device"); - - memcpy(&acpi_trip->devices, &devices, sizeof(devices)); - return true; -} - static void acpi_thermal_update_active_devices(struct acpi_thermal *tz, int index) { struct acpi_thermal_trip *acpi_trip = &tz->trips.active[index].trip; @@ -304,7 +290,7 @@ static void acpi_thermal_update_active_d if (!acpi_thermal_trip_valid(acpi_trip)) return; - if (update_active_devices(tz, index, true)) + if (update_trip_devices(tz, acpi_trip, index, true)) return; acpi_trip->temperature = THERMAL_TEMP_INVALID; @@ -460,7 +446,8 @@ static bool acpi_thermal_init_passive_tr tz->trips.passive.tsp = tmp; - if (!update_passive_devices(tz, false)) + if (!update_trip_devices(tz, &tz->trips.passive.trip, + ACPI_THERMAL_TRIP_PASSIVE, false)) goto fail; tz->trips.passive.trip.temperature = temp; @@ -482,7 +469,7 @@ static bool acpi_thermal_init_active_tri if (temp == THERMAL_TEMP_INVALID) goto fail; - if (!update_active_devices(tz, index, false)) + if (!update_trip_devices(tz, &tz->trips.active[index].trip, index, false)) goto fail; tz->trips.active[index].trip.temperature = temp;