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author | Stijn Tintel <stijn@linux-ipv6.be> | 2018-11-10 13:03:18 +0200 |
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committer | Stijn Tintel <stijn@linux-ipv6.be> | 2018-12-18 23:19:21 +0200 |
commit | f5919b65d4c671fd5083838c7a445f319f9a13c8 (patch) | |
tree | 2c791d2a5dea5bbbb0b85f86f74afce2647c0726 /target/linux/brcm2708/patches-4.14/950-0426-drivers-thermal-step_wise-add-support-for-hysteresis.patch | |
parent | 822b4c3b250a254e74407056ccfd5c6aa38da162 (diff) | |
download | upstream-f5919b65d4c671fd5083838c7a445f319f9a13c8.tar.gz upstream-f5919b65d4c671fd5083838c7a445f319f9a13c8.tar.bz2 upstream-f5919b65d4c671fd5083838c7a445f319f9a13c8.zip |
brcm2708: add kernel 4.14 support
Patch generation process:
- rebase rpi/rpi-4.14.y on v4.14.89 from linux-stable
- git format-patch v4.14.89
Patches skipped during rebase:
- lan78xx: Read MAC address from DT if present
- lan78xx: Enable LEDs and auto-negotiation
- Revert "softirq: Let ksoftirqd do its job"
- sc16is7xx: Fix for multi-channel stall
- lan78xx: Ignore DT MAC address if already valid
- lan78xx: Simple patch to prevent some crashes
- tcp_write_queue_purge clears all the SKBs in the write queue
- Revert "lan78xx: Simple patch to prevent some crashes"
- lan78xx: Connect phy early
- Arm: mm: ftrace: Only set text back to ro after kernel has been marked ro
- Revert "Revert "softirq: Let ksoftirqd do its job""
- ASoC: cs4265: SOC_SINGLE register value error fix
- Revert "ASoC: cs4265: SOC_SINGLE register value error fix"
- Revert "net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends"
- Revert "Revert "net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends""
Patches dropped after rebase:
- net: Add non-mainline source for rtl8192cu wlan
- net: Fix rtl8192cu build errors on other platforms
- brcm: adds support for BCM43341 wifi
- brcmfmac: Mute expected startup 'errors'
- ARM64: Fix build break for RTL8187/RTL8192CU wifi
- ARM64: Enable RTL8187/RTL8192CU wifi in build config
- This is the driver for Sony CXD2880 DVB-T2/T tuner + demodulator
- brcmfmac: add CLM download support
- brcmfmac: request_firmware_direct is quieter
- Sets the BCDC priority to constant 0
- brcmfmac: Disable ARP offloading when promiscuous
- brcmfmac: Avoid possible out-of-bounds read
- brcmfmac: Delete redundant length check
- net: rtl8192cu: Normalize indentation
- net: rtl8192cu: Fix implicit fallthrough warnings
- Revert "Sets the BCDC priority to constant 0"
- media: cxd2880: Bump to match 4.18.y version
- media: cxd2880-spi: Bump to match 4.18.y version
- Revert "mm: alloc_contig: re-allow CMA to compact FS pages"
- Revert "Revert "mm: alloc_contig: re-allow CMA to compact FS pages""
- cxd2880: CXD2880_SPI_DRV should select DVB_CXD2880 with
MEDIA_SUBDRV_AUTOSELECT
- 950-0421-HID-hid-bigbenff-driver-for-BigBen-Interactive-PS3OF.patch
- 950-0453-Add-hid-bigbenff-to-list-of-have_special_driver-for-.patch
Make I2C built-in instead of modular as in upstream defconfig; also the
easiest way to get MFD_ARIZONA enabled, which is required by
kmod-sound-soc-rpi-cirrus.
Add missing compatible strings from
4.9/960-add-rasbperrypi-compatible.patch, using upstream names for
compute modules.
Add extra patch to enable the LEDs on lan78xx.
Compile-tested: bcm2708, bcm2709, bcm2710 (with CONFIG_ALL_KMODS=y)
Runtime-tested: bcm2708, bcm2710
Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
Diffstat (limited to 'target/linux/brcm2708/patches-4.14/950-0426-drivers-thermal-step_wise-add-support-for-hysteresis.patch')
-rw-r--r-- | target/linux/brcm2708/patches-4.14/950-0426-drivers-thermal-step_wise-add-support-for-hysteresis.patch | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.14/950-0426-drivers-thermal-step_wise-add-support-for-hysteresis.patch b/target/linux/brcm2708/patches-4.14/950-0426-drivers-thermal-step_wise-add-support-for-hysteresis.patch new file mode 100644 index 0000000000..e715e4e219 --- /dev/null +++ b/target/linux/brcm2708/patches-4.14/950-0426-drivers-thermal-step_wise-add-support-for-hysteresis.patch @@ -0,0 +1,96 @@ +From bcf41a406eb1c0e2a7f3e5ac0baef5455933afd7 Mon Sep 17 00:00:00 2001 +From: Ram Chandrasekar <rkumbako@codeaurora.org> +Date: Mon, 7 May 2018 11:54:08 -0600 +Subject: [PATCH 426/454] drivers: thermal: step_wise: add support for + hysteresis + +From: Ram Chandrasekar <rkumbako@codeaurora.org> + +Step wise governor increases the mitigation level when the temperature +goes above a threshold and will decrease the mitigation when the +temperature falls below the threshold. If it were a case, where the +temperature hovers around a threshold, the mitigation will be applied +and removed at every iteration. This reaction to the temperature is +inefficient for performance. + +The use of hysteresis temperature could avoid this ping-pong of +mitigation by relaxing the mitigation to happen only when the +temperature goes below this lower hysteresis value. + +Signed-off-by: Ram Chandrasekar <rkumbako@codeaurora.org> +Signed-off-by: Lina Iyer <ilina@codeaurora.org> +--- + drivers/thermal/step_wise.c | 33 +++++++++++++++++++++++---------- + 1 file changed, 23 insertions(+), 10 deletions(-) + +--- a/drivers/thermal/step_wise.c ++++ b/drivers/thermal/step_wise.c +@@ -36,7 +36,7 @@ + * for this trip point + * d. if the trend is THERMAL_TREND_DROP_FULL, use lower limit + * for this trip point +- * If the temperature is lower than a trip point, ++ * If the temperature is lower than a hysteresis temperature, + * a. if the trend is THERMAL_TREND_RAISING, do nothing + * b. if the trend is THERMAL_TREND_DROPPING, use lower cooling + * state for this trip point, if the cooling state already +@@ -127,7 +127,7 @@ static void update_passive_instance(stru + + static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip) + { +- int trip_temp; ++ int trip_temp, hyst_temp; + enum thermal_trip_type trip_type; + enum thermal_trend trend; + struct thermal_instance *instance; +@@ -135,22 +135,23 @@ static void thermal_zone_trip_update(str + int old_target; + + if (trip == THERMAL_TRIPS_NONE) { +- trip_temp = tz->forced_passive; ++ hyst_temp = trip_temp = tz->forced_passive; + trip_type = THERMAL_TRIPS_NONE; + } else { + tz->ops->get_trip_temp(tz, trip, &trip_temp); ++ hyst_temp = trip_temp; ++ if (tz->ops->get_trip_hyst) { ++ tz->ops->get_trip_hyst(tz, trip, &hyst_temp); ++ hyst_temp = trip_temp - hyst_temp; ++ } + tz->ops->get_trip_type(tz, trip, &trip_type); + } + + trend = get_tz_trend(tz, trip); + +- if (tz->temperature >= trip_temp) { +- throttle = true; +- trace_thermal_zone_trip(tz, trip, trip_type); +- } +- +- dev_dbg(&tz->device, "Trip%d[type=%d,temp=%d]:trend=%d,throttle=%d\n", +- trip, trip_type, trip_temp, trend, throttle); ++ dev_dbg(&tz->device, ++ "Trip%d[type=%d,temp=%d,hyst=%d]:trend=%d,throttle=%d\n", ++ trip, trip_type, trip_temp, hyst_temp, trend, throttle); + + mutex_lock(&tz->lock); + +@@ -159,6 +160,18 @@ static void thermal_zone_trip_update(str + continue; + + old_target = instance->target; ++ throttle = false; ++ /* ++ * Lower the mitigation only if the temperature ++ * goes below the hysteresis temperature. ++ */ ++ if (tz->temperature >= trip_temp || ++ (tz->temperature >= hyst_temp && ++ old_target != THERMAL_NO_TARGET)) { ++ throttle = true; ++ trace_thermal_zone_trip(tz, trip, trip_type); ++ } ++ + instance->target = get_target_state(instance, trend, throttle); + dev_dbg(&instance->cdev->device, "old_target=%d, target=%d\n", + old_target, (int)instance->target); |