mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
synced 2025-08-27 06:50:37 +00:00
8ce2a15b1e
Commit673ce00c5d("ARM: omap2plus_defconfig: Add support for distros with systemd") said it's because of recommendation from systemd. But systemd changed their recommendation later.[1] For cgroup v1, if turned on, and there's any cgroup in the "cpu" hierarchy it needs an RT budget assigned, otherwise the processes in it will not be able to get RT at all. The problem with RT group scheduling is that it requires the budget assigned but there's no way we could assign a default budget, since the values to assign are both upper and lower time limits, are absolute, and need to be sum up to < 1 for each individal cgroup. That means we cannot really come up with values that would work by default in the general case.[2] For cgroup v2, it's almost unusable as well. If it turned on, the cpu controller can only be enabled when all RT processes are in the root cgroup. But it will lose the benefits of cgroup v2 if all RT process were placed in the same cgroup. Red Hat, Gentoo, Arch Linux and Debian all disable it. systemd also doesn't support it. [1]:f4e74be185[2]: https://bugzilla.redhat.com/show_bug.cgi?id=1229700 Tested-by: Stefan Wahren <wahrenst@gmx.net> Acked-by: Kevin Hilman <khilman@baylibre.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Celeste Liu <uwu@coelacanthus.name> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
191 lines
4.2 KiB
Plaintext
191 lines
4.2 KiB
Plaintext
# CONFIG_LOCALVERSION_AUTO is not set
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CONFIG_SYSVIPC=y
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CONFIG_NO_HZ_IDLE=y
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CONFIG_HIGH_RES_TIMERS=y
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CONFIG_PREEMPT_VOLUNTARY=y
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CONFIG_BSD_PROCESS_ACCT=y
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CONFIG_BSD_PROCESS_ACCT_V3=y
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CONFIG_LOG_BUF_SHIFT=18
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CONFIG_CFS_BANDWIDTH=y
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CONFIG_CGROUP_FREEZER=y
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CONFIG_CPUSETS=y
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CONFIG_CGROUP_DEVICE=y
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CONFIG_CGROUP_CPUACCT=y
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CONFIG_CGROUP_PERF=y
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CONFIG_NAMESPACES=y
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CONFIG_SCHED_AUTOGROUP=y
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CONFIG_RELAY=y
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CONFIG_BLK_DEV_INITRD=y
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CONFIG_CC_OPTIMIZE_FOR_SIZE=y
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CONFIG_EXPERT=y
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CONFIG_KALLSYMS_ALL=y
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CONFIG_PROFILING=y
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CONFIG_CC_STACKPROTECTOR_REGULAR=y
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CONFIG_CRASH_DUMP=y
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CONFIG_ARCH_MULTI_V6=y
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CONFIG_ARCH_BCM=y
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CONFIG_ARCH_BCM2835=y
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CONFIG_AEABI=y
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CONFIG_SECCOMP=y
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CONFIG_KEXEC=y
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CONFIG_CPU_FREQ=y
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CONFIG_CPU_FREQ_STAT=y
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CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE=y
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CONFIG_CPU_FREQ_GOV_POWERSAVE=y
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CONFIG_CPU_FREQ_GOV_USERSPACE=y
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CONFIG_CPU_FREQ_GOV_ONDEMAND=y
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CONFIG_CPUFREQ_DT=y
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CONFIG_ARM_RASPBERRYPI_CPUFREQ=y
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CONFIG_VFP=y
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# CONFIG_SUSPEND is not set
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CONFIG_PM=y
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CONFIG_JUMP_LABEL=y
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CONFIG_MODULES=y
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CONFIG_MODULE_UNLOAD=y
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# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
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# CONFIG_COMPAT_BRK is not set
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CONFIG_KSM=y
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CONFIG_CMA=y
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CONFIG_NET=y
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CONFIG_PACKET=y
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CONFIG_UNIX=y
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CONFIG_INET=y
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CONFIG_IP_PNP=y
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CONFIG_IP_PNP_DHCP=y
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CONFIG_NETWORK_SECMARK=y
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CONFIG_NETFILTER=y
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CONFIG_BT=y
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CONFIG_BT_HCIUART=m
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CONFIG_BT_HCIUART_BCM=y
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CONFIG_CFG80211=y
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CONFIG_MAC80211=y
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CONFIG_DEVTMPFS=y
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CONFIG_DEVTMPFS_MOUNT=y
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# CONFIG_STANDALONE is not set
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CONFIG_RASPBERRYPI_FIRMWARE=y
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CONFIG_SCSI=y
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CONFIG_BLK_DEV_SD=y
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CONFIG_SCSI_CONSTANTS=y
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CONFIG_SCSI_SCAN_ASYNC=y
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CONFIG_NETDEVICES=y
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CONFIG_BCMGENET=y
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CONFIG_USB_LAN78XX=y
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CONFIG_USB_USBNET=y
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CONFIG_USB_NET_SMSC95XX=y
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CONFIG_BRCMFMAC=m
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CONFIG_ZD1211RW=y
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CONFIG_INPUT_EVDEV=y
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# CONFIG_LEGACY_PTYS is not set
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CONFIG_SERIAL_8250=y
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CONFIG_SERIAL_8250_CONSOLE=y
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CONFIG_SERIAL_8250_EXTENDED=y
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CONFIG_SERIAL_8250_SHARE_IRQ=y
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CONFIG_SERIAL_8250_BCM2835AUX=y
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CONFIG_SERIAL_AMBA_PL011=y
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CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
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CONFIG_SERIAL_DEV_BUS=y
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CONFIG_TTY_PRINTK=y
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CONFIG_I2C_CHARDEV=y
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CONFIG_I2C_BCM2835=y
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CONFIG_SPI=y
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CONFIG_SPI_BCM2835=y
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CONFIG_SPI_BCM2835AUX=y
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CONFIG_GPIO_SYSFS=y
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CONFIG_SENSORS_RASPBERRYPI_HWMON=m
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CONFIG_THERMAL=y
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CONFIG_BCM2711_THERMAL=y
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CONFIG_BCM2835_THERMAL=y
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CONFIG_WATCHDOG=y
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CONFIG_BCM2835_WDT=y
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CONFIG_MFD_SYSCON=y
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CONFIG_REGULATOR=y
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CONFIG_REGULATOR_FIXED_VOLTAGE=y
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CONFIG_REGULATOR_GPIO=y
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CONFIG_MEDIA_SUPPORT=y
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CONFIG_MEDIA_CAMERA_SUPPORT=y
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CONFIG_DRM=y
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CONFIG_DRM_V3D=y
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CONFIG_DRM_VC4=y
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CONFIG_DRM_SIMPLEDRM=y
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CONFIG_FB=y
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CONFIG_FRAMEBUFFER_CONSOLE=y
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CONFIG_SOUND=y
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CONFIG_SND=y
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CONFIG_SND_SOC=y
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CONFIG_SND_BCM2835_SOC_I2S=y
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CONFIG_USB=y
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CONFIG_USB_OTG=y
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CONFIG_USB_STORAGE=y
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CONFIG_USB_DWC2=y
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CONFIG_NOP_USB_XCEIV=y
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CONFIG_USB_GADGET=y
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CONFIG_USB_ETH=m
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CONFIG_USB_ETH_EEM=y
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CONFIG_USB_G_SERIAL=m
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CONFIG_MMC=y
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CONFIG_MMC_SDHCI=y
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CONFIG_MMC_SDHCI_PLTFM=y
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CONFIG_MMC_SDHCI_IPROC=y
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CONFIG_MMC_BCM2835=y
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CONFIG_NEW_LEDS=y
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CONFIG_LEDS_CLASS=y
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CONFIG_LEDS_GPIO=y
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CONFIG_LEDS_TRIGGERS=y
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CONFIG_LEDS_TRIGGER_TIMER=y
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CONFIG_LEDS_TRIGGER_ONESHOT=y
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CONFIG_LEDS_TRIGGER_HEARTBEAT=y
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CONFIG_LEDS_TRIGGER_CPU=y
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CONFIG_LEDS_TRIGGER_GPIO=y
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CONFIG_LEDS_TRIGGER_DEFAULT_ON=y
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CONFIG_LEDS_TRIGGER_TRANSIENT=y
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CONFIG_LEDS_TRIGGER_CAMERA=y
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CONFIG_DMADEVICES=y
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CONFIG_DMA_BCM2835=y
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CONFIG_STAGING=y
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CONFIG_SND_BCM2835=m
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CONFIG_VIDEO_BCM2835=m
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CONFIG_CLK_RASPBERRYPI=y
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CONFIG_MAILBOX=y
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CONFIG_BCM2835_MBOX=y
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# CONFIG_IOMMU_SUPPORT is not set
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CONFIG_RASPBERRYPI_POWER=y
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CONFIG_PWM=y
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CONFIG_PWM_BCM2835=y
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CONFIG_EXT2_FS=y
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CONFIG_EXT2_FS_XATTR=y
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CONFIG_EXT2_FS_POSIX_ACL=y
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CONFIG_EXT3_FS=y
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CONFIG_EXT3_FS_POSIX_ACL=y
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CONFIG_FANOTIFY=y
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CONFIG_MSDOS_FS=y
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CONFIG_VFAT_FS=y
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CONFIG_TMPFS=y
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CONFIG_TMPFS_POSIX_ACL=y
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# CONFIG_MISC_FILESYSTEMS is not set
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CONFIG_NFS_FS=y
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CONFIG_ROOT_NFS=y
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CONFIG_NFSD=y
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CONFIG_NLS_CODEPAGE_437=y
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CONFIG_NLS_ASCII=y
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CONFIG_NLS_ISO8859_1=y
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CONFIG_NLS_UTF8=y
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# CONFIG_XZ_DEC_ARM is not set
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# CONFIG_XZ_DEC_ARMTHUMB is not set
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CONFIG_DMA_CMA=y
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CONFIG_CMA_SIZE_MBYTES=32
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CONFIG_PRINTK_TIME=y
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CONFIG_BOOT_PRINTK_DELAY=y
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CONFIG_DYNAMIC_DEBUG=y
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CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y
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# CONFIG_ENABLE_MUST_CHECK is not set
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CONFIG_LOCKUP_DETECTOR=y
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CONFIG_DEBUG_FS=y
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CONFIG_KGDB=y
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CONFIG_KGDB_KDB=y
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CONFIG_DEBUG_MEMORY_INIT=y
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CONFIG_FUNCTION_PROFILER=y
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CONFIG_STACK_TRACER=y
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CONFIG_SCHED_TRACER=y
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CONFIG_STRICT_DEVMEM=y
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CONFIG_TEST_KSTRTOX=y
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