1738e87632
Drop upstreamed patches: 0001-v6.16-pinctrl-armada-37xx-use-correct-OUTPUT_VAL-register-.patch 0002-v6.16-pinctrl-armada-37xx-set-GPIO-output-value-before-set.patch 820-v6.11-01-dt-bindings-firmware-add-cznic-turris-omnia-mcu-bind.patch 820-v6.11-02-platform-cznic-Add-preliminary-support-for-Turris-Om.patch 820-v6.11-03-platform-cznic-turris-omnia-mcu-Add-support-for-MCU-.patch 820-v6.11-04-platform-cznic-turris-omnia-mcu-Add-support-for-powe.patch 820-v6.11-05-platform-cznic-turris-omnia-mcu-Add-support-for-MCU-.patch 820-v6.11-06-platform-cznic-turris-omnia-mcu-Add-support-for-MCU-.patch 820-v6.11-07-ARM-dts-turris-omnia-Add-MCU-system-controller-node.patch 820-v6.11-08-ARM-dts-turris-omnia-Add-GPIO-key-node-for-front-but.patch 820-v6.11-09-platform-cznic-turris-omnia-mcu-Depend-on-OF.patch 820-v6.11-10-platform-cznic-turris-omnia-mcu-Depend-on-WATCHDOG.patch 820-v6.11-11-platform-cznic-turris-omnia-mcu-fix-Kconfig-dependen.patch Manually refreshed: 310-linksys-use-eth0-as-cpu-port.patch 350-drivers-thermal-step_wise-add-support-for-hysteresis.patch 901-dt-bindings-Add-IEI-vendor-prefix-and-IEI-WT61P803-P.patch 902-drivers-mfd-Add-a-driver-for-IEI-WT61P803-PUZZLE-MCU.patch 910-drivers-leds-wt61p803-puzzle-improvements.patch All other patches automatically refreshed. Signed-off-by: Stefan Kalscheuer <stefan@stklcode.de> Link: https://github.com/openwrt/openwrt/pull/18975 Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
62 lines
2.4 KiB
Diff
62 lines
2.4 KiB
Diff
From 9685ce100f0d302501117113ef0a526ad1acca1d Mon Sep 17 00:00:00 2001
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From: Ram Chandrasekar <rkumbako@codeaurora.org>
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Date: Mon, 7 May 2018 11:54:08 -0600
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Subject: [PATCH] drivers: thermal: step_wise: add support for hysteresis
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Step wise governor increases the mitigation level when the temperature
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goes above a threshold and will decrease the mitigation when the
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temperature falls below the threshold. If it were a case, where the
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temperature hovers around a threshold, the mitigation will be applied
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and removed at every iteration. This reaction to the temperature is
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inefficient for performance.
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The use of hysteresis temperature could avoid this ping-pong of
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mitigation by relaxing the mitigation to happen only when the
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temperature goes below this lower hysteresis value.
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Signed-off-by: Ram Chandrasekar <rkumbako@codeaurora.org>
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Signed-off-by: Lina Iyer <ilina@codeaurora.org>
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[forward-ported for Linux 6.6, as stop-gap downstream solution]
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Signed-off-by: Daniel Golle <daniel@makrotopia.org>
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---
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drivers/thermal/gov_step_wise.c | 23 ++++++++++++++++-------
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1 file changed, 16 insertions(+), 7 deletions(-)
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--- a/drivers/thermal/gov_step_wise.c
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+++ b/drivers/thermal/gov_step_wise.c
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@@ -74,19 +74,28 @@ static void thermal_zone_trip_update(str
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int trip_id = thermal_zone_trip_id(tz, trip);
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struct thermal_instance *instance;
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bool throttle = false;
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+ int hyst_temp;
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- if (tz->temperature >= trip_threshold) {
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- throttle = true;
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- trace_thermal_zone_trip(tz, trip_id, trip->type);
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- }
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-
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- dev_dbg(&tz->device, "Trip%d[type=%d,temp=%d]:trend=%d,throttle=%d\n",
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- trip_id, trip->type, trip_threshold, trend, throttle);
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+ hyst_temp = trip->temperature - trip->hysteresis;
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+ dev_dbg(&tz->device, "Trip%d[type=%d,temp=%d,hyst=%d]:trend=%d,throttle=%d\n",
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+ trip_id, trip->type, trip->temperature, hyst_temp, trend, throttle);
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list_for_each_entry(instance, &td->thermal_instances, trip_node) {
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int old_target;
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old_target = instance->target;
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+ throttle = false;
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+ /*
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+ * Lower the mitigation only if the temperature
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+ * goes below the hysteresis temperature.
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+ */
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+ if (tz->temperature >= trip->temperature ||
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+ (tz->temperature >= hyst_temp &&
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+ old_target != THERMAL_NO_TARGET)) {
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+ throttle = true;
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+ trace_thermal_zone_trip(tz, trip_id, trip->type);
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+ }
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+
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instance->target = get_target_state(instance, trend, throttle);
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dev_dbg(&instance->cdev->device, "old_target=%d, target=%ld\n",
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