linaro-kernel May 2014

linaro-kernel@lists.linaro.org

99 participants
200 discussions

[PATCH 00/15] ASoC: Arnds randconfig fixes for ASoC

by Xia Kaixu

This patchset series addresses various bugs found and fixed by Arnd Bergmann whilst doing randconfig builds. My involvement has been to review, add/check the maintainers are correct and submit upstream to try and reduce the backlog. Best Regards, Kaixu Xia Arnd Bergmann (11): ASoC: CS42L51 and WM8962 codecs depend on INPUT ASoC: davinci: add dependencies for SND_SOC_TLV320AIC3X ASoC: SMDK_WM8580_PCM needs REGMAP_I2C ASoC: samsung-idma: avoid 64-bit division ASoC: nuc900: export nuc900_ac97_data ASoC: RX-51 audio needs I2C ASoC: UDA1380 needs I2C ASoC: Atmel WM8904 codec support needs I2C ASoC: SND_S3C_DMA_LEGACY needs S3C24XX_DMA ASoC: Amstrad E3 needs TTY support for codec ASoC: pxa: remove mach header dependency Xia Kaixu (4): ASoC: TTC DKB audio needs I2C ASoC: Migo-R sound needs I2C ASoC: TLV320AIC23 and Simtec Hermes audio need I2C ASoC: WM0010 needs SPI sound/arm/pxa2xx-pcm.c | 2 ++ sound/arm/pxa2xx-pcm.h | 3 +-- sound/soc/atmel/Kconfig | 2 +- sound/soc/codecs/Kconfig | 8 ++++---- sound/soc/davinci/Kconfig | 10 +++++----- sound/soc/fsl/Kconfig | 2 +- sound/soc/nuc900/Kconfig | 1 + sound/soc/nuc900/nuc900-ac97.c | 1 + sound/soc/omap/Kconfig | 4 ++-- sound/soc/pxa/Kconfig | 2 +- sound/soc/pxa/pxa-ssp.c | 2 -- sound/soc/pxa/pxa2xx-pcm.c | 2 ++ sound/soc/samsung/Kconfig | 22 ++++++++++------------ sound/soc/samsung/idma.c | 2 +- sound/soc/sh/Kconfig | 2 +- 15 files changed, 33 insertions(+), 32 deletions(-) -- 1.7.9.5

10 years, 8 months

From: "zhizhou.zhang" <zhizhou.zhang@spreadtrum.com>

by zhizhou.zh＠gmail.com

when disable CONFIG_SMP, we can't build success because of error: implicit declaration of function ‘per_cpu_offset’ per_cpu_offset is available only if CONFIG_SMP is enable. Signed-off-by: Zhizhou.zhang <zhizhou.zh(a)gmail.com> --- arch/arm64/kernel/suspend.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/kernel/suspend.c b/arch/arm64/kernel/suspend.c index 1fa9ce4..3c7dd59 100644 --- a/arch/arm64/kernel/suspend.c +++ b/arch/arm64/kernel/suspend.c @@ -91,11 +91,13 @@ int cpu_suspend(unsigned long arg) cpu_switch_mm(mm->pgd, mm); flush_tlb_all(); +#ifdef CONFIG_SMP /* * Restore per-cpu offset before any kernel * subsystem relying on it has a chance to run. */ set_my_cpu_offset(per_cpu_offset(cpu)); +#endif /* * Restore HW breakpoint registers to sane values -- 1.7.9.5

10 years, 8 months

next boot: 48 pass, 1 fail (next-20140502)

by Kevin's boot bot

Tree/Branch: next Git describe: next-20140502 Failed boot tests (console logs at the end) =========================================== ste-snowball: FAIL: arm-u8500_defconfig Full Report =========== arm-davinci_all_defconfig ------------------------- legacy,dm365evm 0 min 17.4 sec: PASS da850-evm 0 min 15.3 sec: PASS arm-tegra_defconfig ------------------- tegra30-beaver 0 min 17.7 sec: PASS arm-omap2plus_defconfig ----------------------- legacy,3730xm 0 min 49.8 sec: PASS am335x-boneblack 0 min 44.2 sec: PASS omap3-beagle-xm 0 min 59.1 sec: PASS legacy,3530beagle 0 min 36.1 sec: PASS (Warnings: 1) omap4-panda 1 min 3.8 sec: PASS omap3-overo-tobi 0 min 23.1 sec: PASS (Warnings: 1) am335x-bone 0 min 27.4 sec: PASS omap3-overo-storm-tobi 0 min 21.6 sec: PASS omap5-uevm 1 min 7.8 sec: PASS (Warnings: 1) omap3-n900 0 min 16.2 sec: PASS (Warnings: 1) legacy,n900 0 min 16.9 sec: PASS (Warnings: 1) omap4-panda-es 1 min 3.1 sec: PASS legacy,3730storm 0 min 23.0 sec: PASS legacy,3530overo 0 min 24.2 sec: PASS (Warnings: 1) arm-imx_v6_v7_defconfig ----------------------- imx6dl-wandboard,wand-dual 0 min 19.1 sec: PASS imx6dl-wandboard,wand-solo 0 min 19.1 sec: PASS imx6q-wandboard 0 min 17.3 sec: PASS arm-multi_v7_defconfig ---------------------- qcom-apq8074-dragonboard 0 min 16.8 sec: PASS ste-snowball 1 min 25.4 sec: PASS tegra30-beaver 0 min 25.2 sec: PASS am335x-boneblack 0 min 37.8 sec: PASS omap3-beagle-xm 0 min 54.9 sec: PASS sun7i-a20-cubieboard2 0 min 12.3 sec: PASS armada-370-mirabox 0 min 22.5 sec: PASS omap4-panda 0 min 57.8 sec: PASS armada-xp-openblocks-ax3-4 0 min 25.4 sec: PASS sun4i-a10-cubieboard 0 min 19.0 sec: PASS bcm28155-ap 0 min 26.6 sec: PASS omap3-overo-tobi 0 min 22.3 sec: PASS (Warnings: 1) imx6dl-wandboard,wand-solo 0 min 18.1 sec: PASS am335x-bone 0 min 26.8 sec: PASS omap3-overo-storm-tobi 0 min 24.2 sec: PASS omap5-uevm 1 min 36.9 sec: PASS (Warnings: 1) omap3-n900 0 min 15.9 sec: PASS (Warnings: 1) imx6q-wandboard 0 min 17.3 sec: PASS omap4-panda-es 0 min 51.9 sec: PASS imx6dl-wandboard,wand-dual 0 min 17.9 sec: PASS arm-sunxi_defconfig ------------------- sun7i-a20-cubieboard2 0 min 22.8 sec: PASS sun4i-a10-cubieboard 0 min 12.8 sec: PASS arm-bcm_defconfig ----------------- bcm28155-ap 0 min 24.1 sec: PASS arm-exynos_defconfig -------------------- exynos5420-arndale-octa 0 min 32.2 sec: PASS exynos5250-arndale 0 min 31.1 sec: PASS arm-u8500_defconfig ------------------- ste-snowball 0 min 56.8 sec: FAIL arm-mvebu_v7_defconfig ---------------------- armada-xp-openblocks-ax3-4 0 min 22.8 sec: PASS armada-370-mirabox 0 min 20.6 sec: PASS arm-sama5_defconfig ------------------- sama5d35ek 0 min 17.3 sec: PASS Console logs for failures ========================= arm-u8500_defconfig ------------------- ste-snowball: FAIL: last 80 lines of boot log: ---------------------------------------------- U-Boot 2009.11 (sept. 19 2011 - 17:03:11) CPU: ST-Ericsson db8500 v2 (Dual ARM Cortex A9) 998.400 Mhz I2C: ready DRAM: 1 GB MMC: MCDE: startup failed sec_bridge: ISSWAPI_FLUSH_BOOT_CODE: 2 EMMC: 0, MMC: 1 In: serial Out: serial Err: serial Net: smc911x-0 Hit any key to stop autoboot: 1 0 U8500 $ U8500 $ version version U-Boot 2009.11 (sept. 19 2011 - 17:03:11) U8500 $ setenv ethaddr 6e:e6:84:36:8e:9e setenv ethaddr 6e:e6:84:36:8e:9e Can't overwrite "ethaddr" U8500 $setenv bootargs console=ttyAMA2,115200n8 debug earlyprintk rw root=/dev/mmcblk0p3 rootwait rootfstype=ext4 setenv bootargs console=ttyAMA2,115200n8 debug earlyprintk rw root=/dev/mmcblk0p3 rootwait rootfstype=ext4 U8500 $ setenv netargs 'setenv bootargs ${bootargs} ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}:::none:192.168.1.254' setenv netargs 'setenv bootargs ${bootargs} ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}:::none:192.168.1.254' U8500 $ if test -n ${initenv}; then run initenv; fi if test -n ${initenv}; then run initenv; fi U8500 $ if test -n ${preboot}; then run preboot; fi if test -n ${preboot}; then run preboot; fi U8500 $ setenv autoload no; setenv autoboot no setenv autoload no; setenv autoboot no U8500 $ dhcp dhcp smc911x: detected LAN9221 controller smc911x: phy initialized smc911x: MAC 6e:e6:84:36:8e:9e BOOTP broadcast 1 BOOTP broadcast 2 DHCP client bound to address 192.168.1.159 U8500 $ setenv serverip 192.168.1.2 setenv serverip 192.168.1.2 U8500 $ if test -n ${netargs}; then run netargs; fi if test -n ${netargs}; then run netargs; fi U8500 $ tftp 0x00800000 192.168.1.2:tmp/snowball-rVnrnH/tmpYGFuNk-uImage tftp 0x00800000 192.168.1.2:tmp/snowball-rVnrnH/tmpYGFuNk-uImage smc911x: detected LAN9221 controller smc911x: phy initialized smc911x: MAC 6e:e6:84:36:8e:9e Using smc911x-0 device TFTP from server 192.168.1.2; our IP address is 192.168.1.159 Filename 'tmp/snowball-rVnrnH/tmpYGFuNk-uImage'. Load address: 0x800000 Loading: *################################################################# ################################################################# ################################################################# ##################T ############ done Bytes transferred = 3289297 (3230d1 hex) U8500 $ printenv bootargs printenv bootargs bootargs=console=ttyAMA2,115200n8 debug earlyprintk rw root=/dev/mmcblk0p3 rootwait rootfstype=ext4 ip=192.168.1.159:192.168.1.2:192.168.1.254:255.255.255.0:::none:192.168.1.254 U8500 $ bootm 0x00800000 bootm 0x00800000 ## Booting kernel from Legacy Image at 00800000 ... Image Name: Linux Image Type: ARM Linux Kernel Image (uncompressed) Data Size: 3289233 Bytes = 3.1 MB Load Address: 00008000 Entry Point: 00008000 Loading Kernel Image ... OK OK Starting kernel ... ~$off # PYBOOT: Exception: kernel: ERROR: did not start booting. # PYBOOT: Time: 56.76 seconds. # PYBOOT: Result: FAIL

10 years, 8 months

mainline boot: 49 pass, 0 fail (v3.15-rc3-121-gb7270cc)

by Kevin's boot bot

Tree/Branch: mainline Git describe: v3.15-rc3-121-gb7270cc Full Report =========== arm-davinci_all_defconfig ------------------------- legacy,dm365evm 0 min 17.9 sec: PASS da850-evm 0 min 15.7 sec: PASS arm-tegra_defconfig ------------------- tegra30-beaver 0 min 20.5 sec: PASS arm-omap2plus_defconfig ----------------------- legacy,3730xm 0 min 49.2 sec: PASS am335x-boneblack 0 min 44.3 sec: PASS omap3-beagle-xm 1 min 4.2 sec: PASS legacy,3530beagle 0 min 36.0 sec: PASS (Warnings: 1) omap4-panda 1 min 8.5 sec: PASS omap3-overo-tobi 0 min 23.5 sec: PASS (Warnings: 1) am335x-bone 0 min 27.6 sec: PASS omap3-overo-storm-tobi 0 min 25.2 sec: PASS omap5-uevm 1 min 6.2 sec: PASS (Warnings: 1) omap3-n900 0 min 17.6 sec: PASS (Warnings: 1) legacy,n900 0 min 17.2 sec: PASS (Warnings: 1) omap4-panda-es 1 min 20.9 sec: PASS legacy,3730storm 0 min 22.8 sec: PASS legacy,3530overo 0 min 21.5 sec: PASS (Warnings: 1) arm-imx_v6_v7_defconfig ----------------------- imx6dl-wandboard,wand-dual 0 min 18.7 sec: PASS imx6dl-wandboard,wand-solo 0 min 19.2 sec: PASS imx6q-wandboard 0 min 17.2 sec: PASS arm-multi_v7_defconfig ---------------------- qcom-apq8074-dragonboard 0 min 17.1 sec: PASS ste-snowball 1 min 17.7 sec: PASS tegra30-beaver 0 min 19.4 sec: PASS am335x-boneblack 0 min 39.1 sec: PASS omap3-beagle-xm 0 min 52.5 sec: PASS sun7i-a20-cubieboard2 0 min 12.3 sec: PASS armada-370-mirabox 0 min 22.9 sec: PASS omap4-panda 0 min 53.8 sec: PASS armada-xp-openblocks-ax3-4 0 min 25.3 sec: PASS sun4i-a10-cubieboard 0 min 19.4 sec: PASS bcm28155-ap 0 min 28.1 sec: PASS omap3-overo-tobi 0 min 22.1 sec: PASS (Warnings: 1) imx6dl-wandboard,wand-solo 0 min 18.2 sec: PASS am335x-bone 0 min 26.8 sec: PASS omap3-overo-storm-tobi 0 min 21.2 sec: PASS omap5-uevm 1 min 39.6 sec: PASS (Warnings: 1) omap3-n900 0 min 15.9 sec: PASS (Warnings: 1) imx6q-wandboard 0 min 17.0 sec: PASS omap4-panda-es 0 min 50.8 sec: PASS imx6dl-wandboard,wand-dual 0 min 18.4 sec: PASS arm-sunxi_defconfig ------------------- sun7i-a20-cubieboard2 0 min 22.8 sec: PASS sun4i-a10-cubieboard 0 min 15.9 sec: PASS arm-bcm_defconfig ----------------- bcm28155-ap 0 min 24.2 sec: PASS arm-exynos_defconfig -------------------- exynos5420-arndale-octa 0 min 32.2 sec: PASS exynos5250-arndale 0 min 29.9 sec: PASS arm-u8500_defconfig ------------------- ste-snowball 0 min 39.5 sec: PASS arm-mvebu_v7_defconfig ---------------------- armada-xp-openblocks-ax3-4 0 min 22.4 sec: PASS armada-370-mirabox 0 min 20.4 sec: PASS arm-sama5_defconfig ------------------- sama5d35ek 0 min 17.3 sec: PASS

10 years, 8 months

mainline boot: 49 pass, 0 fail (v3.15-rc3-116-gb5f3c61)

by Kevin's boot bot

Tree/Branch: mainline Git describe: v3.15-rc3-116-gb5f3c61 Full Report =========== arm-davinci_all_defconfig ------------------------- legacy,dm365evm 0 min 17.6 sec: PASS da850-evm 0 min 15.4 sec: PASS arm-tegra_defconfig ------------------- tegra30-beaver 0 min 17.2 sec: PASS arm-omap2plus_defconfig ----------------------- legacy,3730xm 0 min 51.1 sec: PASS am335x-boneblack 0 min 45.0 sec: PASS omap3-beagle-xm 1 min 1.2 sec: PASS legacy,3530beagle 0 min 34.3 sec: PASS (Warnings: 1) omap4-panda 1 min 9.5 sec: PASS omap3-overo-tobi 0 min 23.2 sec: PASS (Warnings: 1) am335x-bone 0 min 27.6 sec: PASS omap3-overo-storm-tobi 0 min 24.6 sec: PASS omap5-uevm 1 min 6.5 sec: PASS (Warnings: 1) omap3-n900 0 min 16.5 sec: PASS (Warnings: 1) legacy,n900 0 min 17.0 sec: PASS (Warnings: 1) omap4-panda-es 1 min 13.2 sec: PASS legacy,3730storm 0 min 23.3 sec: PASS legacy,3530overo 0 min 21.2 sec: PASS (Warnings: 1) arm-imx_v6_v7_defconfig ----------------------- imx6dl-wandboard,wand-dual 0 min 18.7 sec: PASS imx6dl-wandboard,wand-solo 0 min 19.1 sec: PASS imx6q-wandboard 0 min 17.2 sec: PASS arm-multi_v7_defconfig ---------------------- qcom-apq8074-dragonboard 0 min 17.0 sec: PASS ste-snowball 1 min 18.1 sec: PASS tegra30-beaver 0 min 19.4 sec: PASS am335x-boneblack 0 min 38.6 sec: PASS omap3-beagle-xm 0 min 55.2 sec: PASS sun7i-a20-cubieboard2 0 min 12.4 sec: PASS armada-370-mirabox 0 min 22.5 sec: PASS omap4-panda 0 min 59.5 sec: PASS armada-xp-openblocks-ax3-4 0 min 25.4 sec: PASS sun4i-a10-cubieboard 0 min 19.1 sec: PASS bcm28155-ap 0 min 26.7 sec: PASS omap3-overo-tobi 0 min 25.1 sec: PASS (Warnings: 1) imx6dl-wandboard,wand-solo 0 min 18.2 sec: PASS am335x-bone 0 min 27.0 sec: PASS omap3-overo-storm-tobi 0 min 21.2 sec: PASS omap5-uevm 1 min 39.0 sec: PASS (Warnings: 1) omap3-n900 0 min 16.1 sec: PASS (Warnings: 1) imx6q-wandboard 0 min 16.8 sec: PASS omap4-panda-es 1 min 2.0 sec: PASS imx6dl-wandboard,wand-dual 0 min 18.0 sec: PASS arm-sunxi_defconfig ------------------- sun7i-a20-cubieboard2 0 min 22.6 sec: PASS sun4i-a10-cubieboard 0 min 13.0 sec: PASS arm-bcm_defconfig ----------------- bcm28155-ap 0 min 24.6 sec: PASS arm-exynos_defconfig -------------------- exynos5420-arndale-octa 0 min 31.9 sec: PASS exynos5250-arndale 0 min 29.8 sec: PASS arm-u8500_defconfig ------------------- ste-snowball 0 min 31.3 sec: PASS arm-mvebu_v7_defconfig ---------------------- armada-xp-openblocks-ax3-4 0 min 22.5 sec: PASS armada-370-mirabox 0 min 20.5 sec: PASS arm-sama5_defconfig ------------------- sama5d35ek 0 min 17.3 sec: PASS

10 years, 8 months

mainline boot: 49 pass, 0 fail (v3.15-rc3-113-gba6728f)

by Kevin's boot bot

Tree/Branch: mainline Git describe: v3.15-rc3-113-gba6728f Full Report =========== arm-davinci_all_defconfig ------------------------- legacy,dm365evm 0 min 17.1 sec: PASS da850-evm 0 min 15.2 sec: PASS arm-tegra_defconfig ------------------- tegra30-beaver 0 min 17.2 sec: PASS arm-omap2plus_defconfig ----------------------- legacy,3730xm 0 min 50.2 sec: PASS am335x-boneblack 0 min 44.2 sec: PASS omap3-beagle-xm 0 min 59.4 sec: PASS legacy,3530beagle 0 min 39.4 sec: PASS (Warnings: 1) omap4-panda 1 min 4.3 sec: PASS omap3-overo-tobi 0 min 23.1 sec: PASS (Warnings: 1) am335x-bone 0 min 27.5 sec: PASS omap3-overo-storm-tobi 0 min 24.8 sec: PASS omap5-uevm 1 min 5.8 sec: PASS (Warnings: 1) omap3-n900 0 min 16.5 sec: PASS (Warnings: 1) legacy,n900 0 min 16.1 sec: PASS (Warnings: 1) omap4-panda-es 1 min 9.5 sec: PASS legacy,3730storm 0 min 23.1 sec: PASS legacy,3530overo 0 min 21.4 sec: PASS (Warnings: 1) arm-imx_v6_v7_defconfig ----------------------- imx6dl-wandboard,wand-dual 0 min 18.4 sec: PASS imx6dl-wandboard,wand-solo 0 min 18.5 sec: PASS imx6q-wandboard 0 min 17.0 sec: PASS arm-multi_v7_defconfig ---------------------- qcom-apq8074-dragonboard 0 min 17.1 sec: PASS ste-snowball 1 min 20.9 sec: PASS tegra30-beaver 0 min 19.7 sec: PASS am335x-boneblack 0 min 38.4 sec: PASS omap3-beagle-xm 0 min 49.2 sec: PASS sun7i-a20-cubieboard2 0 min 12.6 sec: PASS armada-370-mirabox 0 min 22.5 sec: PASS omap4-panda 0 min 56.3 sec: PASS armada-xp-openblocks-ax3-4 0 min 25.4 sec: PASS sun4i-a10-cubieboard 0 min 18.9 sec: PASS bcm28155-ap 0 min 26.7 sec: PASS omap3-overo-tobi 0 min 22.6 sec: PASS (Warnings: 1) imx6dl-wandboard,wand-solo 0 min 18.2 sec: PASS am335x-bone 0 min 26.8 sec: PASS omap3-overo-storm-tobi 0 min 20.8 sec: PASS omap5-uevm 1 min 38.9 sec: PASS (Warnings: 1) omap3-n900 0 min 15.8 sec: PASS (Warnings: 1) imx6q-wandboard 0 min 17.1 sec: PASS omap4-panda-es 0 min 55.0 sec: PASS imx6dl-wandboard,wand-dual 0 min 18.3 sec: PASS arm-sunxi_defconfig ------------------- sun7i-a20-cubieboard2 0 min 22.7 sec: PASS sun4i-a10-cubieboard 0 min 12.8 sec: PASS arm-bcm_defconfig ----------------- bcm28155-ap 0 min 24.2 sec: PASS arm-exynos_defconfig -------------------- exynos5420-arndale-octa 1 min 2.3 sec: PASS exynos5250-arndale 0 min 28.7 sec: PASS arm-u8500_defconfig ------------------- ste-snowball 0 min 33.7 sec: PASS arm-mvebu_v7_defconfig ---------------------- armada-xp-openblocks-ax3-4 0 min 22.2 sec: PASS armada-370-mirabox 0 min 20.4 sec: PASS arm-sama5_defconfig ------------------- sama5d35ek 0 min 17.3 sec: PASS

10 years, 8 months

[PATCH] regulator: tps65090: Check for pdata before dereferencing

by Mark Brown

From: Mark Brown <broonie(a)linaro.org> The per-regulator pdata is optional so we need to check that it's there before dereferencing it. This wasn't done in "regulator: tps65090: Allow setting the overcurrent wait time", fix that. Reported-by: Olof Johansson <olof(a)lixom.net> Signed-off-by: Mark Brown <broonie(a)linaro.org> --- drivers/regulator/tps65090-regulator.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/regulator/tps65090-regulator.c b/drivers/regulator/tps65090-regulator.c index ca04e9f..fbe0bf5 100644 --- a/drivers/regulator/tps65090-regulator.c +++ b/drivers/regulator/tps65090-regulator.c @@ -306,8 +306,11 @@ static int tps65090_regulator_probe(struct platform_device *pdev) ri = &pmic[num]; ri->dev = &pdev->dev; ri->desc = &tps65090_regulator_desc[num]; - ri->overcurrent_wait_valid = tps_pdata->overcurrent_wait_valid; - ri->overcurrent_wait = tps_pdata->overcurrent_wait; + if (tps_pdata) { + ri->overcurrent_wait_valid = + tps_pdata->overcurrent_wait_valid; + ri->overcurrent_wait = tps_pdata->overcurrent_wait; + } /* * TPS5090 DCDC support the control from external digital input. -- 1.9.2

10 years, 8 months

HMP Idle Pull Bug 1301886

by Chris Redpath

Hi Tixy, In respect of the idle pull issue (https://bugs.launchpad.net/linaro-stable-kernel/+bug/1301886) I did a bit of root-cause digging. I'm not sure why I didn't see this in our testing because as you say it's pretty easy to trigger. I can trigger it either with hotplug (sometimes even twice per unplug) or by starting IKS mode. Either our automated test doesn't do any hotplug testing or we somehow missed recognising the failure condition. I know we did not run an IKS test on the revalidated version, but I would expect us to have some hotplug tests in the MP functional testing. Basil, can you look into that please? Ultimately, what happens is that the scheduler will often run __schedule on a CPU which is in the process of being shut down. Its probably too costly to try to compute when it shouldn't run, hence the scheduler makes it safe to run on a mostly-offline CPU. When there is nothing to schedule in, idle_balance is executed (and hence hmp_idle_pull). This happens after the relevant rq has been marked as offline and the sched domains have been rebuilt, but before the tasks are migrated away. Vincent refers to this in a paper he wrote back in 2012 about hotplug as zombie CPUs ( http://www.rdrop.com/users/paulmck/realtime/paper/hotplug-ecrts.2012.06.11a… - in section 2.3). It seems to me that we really should be not doing anything in idle_balance in this situation, and the existing code accomplishes that because the sched_domains already reflect the new world at that point in time. The HMP patch doesn't really care about sched_domains, which is where the problem comes in. It's trivial to add a check to abort idle_balance altogether if the rq is offline, but perhaps nobody has added it since it is only taking a small amount of time on a CPU which is about to turn off and the conditional will need to be evaluated otherwise in every idle balance. Changing the BUG to a simple return NULL and fixing up the callers for this case as you did in your testing patch is functionally correct and safe. The question for me is if we should bother to try to optimize idle_pull behavior during cpu_down - I'm open to opinions :) Best Regards, Chris

10 years, 8 months

[PATCH] sched: hmp: Remove compile-time configuration of task packing

by Jon Medhurst (Tixy)

Compile-time configuration is messy and precludes multi-platform kernels so remove it. Task packing should instead be tuned at run-time, e.g. in user-side boot scripts, with something like: echo 1 > /sys/kernel/hmp/packing_enable echo 650 > /sys/kernel/hmp/packing_limit Signed-off-by: Jon Medhurst <tixy(a)linaro.org> --- Mark and Alex, please don't apply this directly. Assuming that this change doesn't provoke any dissent, it can be pulled from the usual place... git://git.linaro.org/arm/big.LITTLE/mp.git for-lsk kernel/sched/fair.c | 7 ------- 1 file changed, 7 deletions(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 43857fe..6610622 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -3676,15 +3676,8 @@ unsigned int hmp_next_up_threshold = 4096; unsigned int hmp_next_down_threshold = 4096; #ifdef CONFIG_SCHED_HMP_LITTLE_PACKING -#ifndef CONFIG_ARCH_VEXPRESS_TC2 unsigned int hmp_packing_enabled = 1; unsigned int hmp_full_threshold = (NICE_0_LOAD * 9) / 8; -#else -/* TC2 has a sharp consumption curve @ around 800Mhz, so - we aim to spread the load around that frequency. */ -unsigned int hmp_packing_enabled; -unsigned int hmp_full_threshold = 650; /* 80% of the 800Mhz freq * NICE_0_LOAD */ -#endif #endif static unsigned int hmp_up_migration(int cpu, int *target_cpu, struct sched_entity *se); -- 1.7.10.4

10 years, 8 months

next boot: 48 pass, 1 fail (next-20140501)

by Kevin's boot bot

Tree/Branch: next Git describe: next-20140501 Failed boot tests (console logs at the end) =========================================== omap5-uevm: OFFLINE: arm-multi_v7_defconfig Full Report =========== arm-davinci_all_defconfig ------------------------- legacy,dm365evm 0 min 17.4 sec: PASS da850-evm 0 min 15.3 sec: PASS arm-tegra_defconfig ------------------- tegra30-beaver 0 min 17.6 sec: PASS arm-omap2plus_defconfig ----------------------- legacy,3730xm 0 min 54.6 sec: PASS am335x-boneblack 0 min 38.6 sec: PASS omap3-beagle-xm 1 min 0.4 sec: PASS legacy,3530beagle 0 min 48.0 sec: PASS (Warnings: 1) omap4-panda 1 min 8.8 sec: PASS omap3-overo-tobi 0 min 22.6 sec: PASS (Warnings: 1) am335x-bone 0 min 27.1 sec: PASS omap3-overo-storm-tobi 0 min 21.2 sec: PASS omap5-uevm 1 min 10.2 sec: PASS (Warnings: 1) omap3-n900 0 min 15.3 sec: PASS (Warnings: 1) legacy,n900 0 min 16.5 sec: PASS (Warnings: 1) omap4-panda-es 1 min 16.7 sec: PASS legacy,3730storm 0 min 22.6 sec: PASS legacy,3530overo 0 min 20.6 sec: PASS (Warnings: 1) arm-imx_v6_v7_defconfig ----------------------- imx6dl-wandboard,wand-dual 0 min 18.6 sec: PASS imx6dl-wandboard,wand-solo 0 min 18.6 sec: PASS imx6q-wandboard 0 min 17.1 sec: PASS arm-multi_v7_defconfig ---------------------- qcom-apq8074-dragonboard 0 min 17.4 sec: PASS ste-snowball 1 min 17.4 sec: PASS tegra30-beaver 0 min 20.1 sec: PASS am335x-boneblack 0 min 37.9 sec: PASS omap3-beagle-xm 0 min 51.1 sec: PASS sun7i-a20-cubieboard2 0 min 12.3 sec: PASS armada-370-mirabox 0 min 22.5 sec: PASS omap4-panda 0 min 55.8 sec: PASS armada-xp-openblocks-ax3-4 0 min 25.5 sec: PASS sun4i-a10-cubieboard 0 min 14.5 sec: PASS bcm28155-ap 0 min 26.9 sec: PASS omap3-overo-tobi 0 min 22.2 sec: PASS (Warnings: 1) imx6dl-wandboard,wand-solo 0 min 18.7 sec: PASS am335x-bone 0 min 26.8 sec: PASS omap3-overo-storm-tobi 0 min 20.9 sec: PASS omap5-uevm 0 min 31.4 sec: OFFLINE omap3-n900 0 min 16.1 sec: PASS (Warnings: 1) imx6q-wandboard 0 min 16.9 sec: PASS omap4-panda-es 1 min 8.4 sec: PASS imx6dl-wandboard,wand-dual 0 min 18.2 sec: PASS arm-sunxi_defconfig ------------------- sun7i-a20-cubieboard2 0 min 22.8 sec: PASS sun4i-a10-cubieboard 0 min 17.7 sec: PASS arm-bcm_defconfig ----------------- bcm28155-ap 0 min 25.0 sec: PASS arm-exynos_defconfig -------------------- exynos5420-arndale-octa 0 min 32.1 sec: PASS exynos5250-arndale 0 min 39.5 sec: PASS arm-u8500_defconfig ------------------- ste-snowball 0 min 31.2 sec: PASS arm-mvebu_v7_defconfig ---------------------- armada-xp-openblocks-ax3-4 0 min 22.5 sec: PASS armada-370-mirabox 0 min 20.6 sec: PASS arm-sama5_defconfig ------------------- sama5d35ek 0 min 17.1 sec: PASS Console logs for failures ========================= arm-multi_v7_defconfig ---------------------- omap5-uevm: OFFLINE: last 80 lines of boot log: ----------------------------------------------- Connected to omap5uevm console [channel connected] (~$quit to exit) (user:khilman) is already connected ~$hardreset Command(omap5uevm console)> hardreset (user:khilman) Reboot omap5uevm Reboot: omap5uevm ; phidget 1 2 : ('off', 4, 'on') , sleep 4, found: 002/082 2 ~$off # PYBOOT: Exception: ('ERROR: Could not break into u-boot.', 'OFFLINE') # PYBOOT: Time: 31.40 seconds. # PYBOOT: Result: OFFLINE

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linaro-kernel May 2014