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changelogs: https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.58 Removed upstreamed patches: 1. target/linux/generic/backport-6.12/612-01-v6.17-net-dsa-tag_brcm-legacy-reorganize-functions.patch Upstream: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.12.58&id=a4daaf063f8269a5881154c5b77c5ef6639d65d3 2. target/linux/qualcommax/patches-6.12/0151-arm64-qcom-ipq6018-nss_port5.patch Upstream: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.12.58&id=9a7a5d50ee2e035325de9c720e4842d6759d2374 3. target/linux/realtek/patches-6.12/020-01-v6.18-timer-rtl-otto-work-around-dying-timers.patch Upstream: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.12.58&id=d0e217b33d42bfe52ef7ef447916a23a586e6e5c 4. target/linux/realtek/patches-6.12/020-03-v6.18-timer-rtl-otto-do-not-interfere-with-interrupts.patch Upstream: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.12.58&id=8cc561dd9d02f1753ae34dfdd565662828be9a9d Additional changes: - Manually adapted bcm27xx patch: * 950-0410-media-i2c-adv7180-Add-support-for-V4L2_CID_LINK_FREQ.patch Rebased and adjusted for kernel 6.12 to fix context conflicts. - Synced lantiq DTS (danube.dtsi) with upstream bindings to fix DT validation issues on kernel 6.12. - Manually adapted DTS to match OpenWrt's lantiq DTS layout. Compile-tested on x86_64 Run-tested on x86_64 Signed-off-by: gongzi miao <miaogongzi0227@gmail.com> Link: https://github.com/openwrt/openwrt/pull/20777 Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
63 lines
2.4 KiB
Diff
63 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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@@ -87,19 +87,28 @@ 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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