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73d4bb58a3
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.[1] 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.[2] [1]: https://bugzilla.redhat.com/show_bug.cgi?id=1229700 [2]: https://github.com/systemd/systemd/issues/13781#issuecomment-549164383 Signed-off-by: Celeste Liu <CoelacanthusHex@gmail.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
91 lines
2.0 KiB
Plaintext
91 lines
2.0 KiB
Plaintext
CONFIG_SYSVIPC=y
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CONFIG_NO_HZ_IDLE=y
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CONFIG_IKCONFIG=y
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CONFIG_IKCONFIG_PROC=y
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CONFIG_MEMCG=y
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CONFIG_BLK_CGROUP=y
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CONFIG_CFS_BANDWIDTH=y
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CONFIG_CGROUP_PIDS=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_NAMESPACES=y
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CONFIG_USER_NS=y
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CONFIG_SCHED_AUTOGROUP=y
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CONFIG_BLK_DEV_INITRD=y
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CONFIG_BPF_SYSCALL=y
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CONFIG_USERFAULTFD=y
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CONFIG_EXPERT=y
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# CONFIG_SLUB_DEBUG is not set
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# CONFIG_COMPAT_BRK is not set
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CONFIG_CPU_LITTLE_ENDIAN=y
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CONFIG_MIPS_CPS=y
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CONFIG_HIGHMEM=y
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CONFIG_NR_CPUS=16
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CONFIG_MIPS_O32_FP64_SUPPORT=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_TRIM_UNUSED_KSYMS=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_NETFILTER=y
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# CONFIG_WIRELESS is not set
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CONFIG_DEVTMPFS=y
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CONFIG_DEVTMPFS_MOUNT=y
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CONFIG_SCSI=y
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CONFIG_HW_RANDOM=y
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# CONFIG_HWMON is not set
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CONFIG_MFD_SYSCON=y
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CONFIG_HID_A4TECH=y
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CONFIG_HID_APPLE=y
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CONFIG_HID_BELKIN=y
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CONFIG_HID_CHERRY=y
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CONFIG_HID_CHICONY=y
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CONFIG_HID_CYPRESS=y
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CONFIG_HID_EZKEY=y
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CONFIG_HID_KENSINGTON=y
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CONFIG_HID_LOGITECH=y
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CONFIG_HID_MICROSOFT=y
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CONFIG_HID_MONTEREY=y
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# CONFIG_MIPS_PLATFORM_DEVICES is not set
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# CONFIG_IOMMU_SUPPORT is not set
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CONFIG_EXT4_FS=y
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CONFIG_EXT4_FS_POSIX_ACL=y
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CONFIG_EXT4_FS_SECURITY=y
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CONFIG_FS_ENCRYPTION=y
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CONFIG_FANOTIFY=y
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CONFIG_FUSE_FS=y
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CONFIG_CUSE=y
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CONFIG_OVERLAY_FS=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_NFS_V3_ACL=y
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CONFIG_NFS_V4=y
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CONFIG_NFS_V4_1=y
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CONFIG_NFS_V4_2=y
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CONFIG_ROOT_NFS=y
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# CONFIG_XZ_DEC_X86 is not set
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# CONFIG_XZ_DEC_POWERPC is not set
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# CONFIG_XZ_DEC_IA64 is not set
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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_XZ_DEC_SPARC is not set
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CONFIG_PRINTK_TIME=y
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CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y
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CONFIG_DEBUG_INFO_REDUCED=y
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CONFIG_DEBUG_FS=y
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# CONFIG_SCHED_DEBUG is not set
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# CONFIG_FTRACE is not set
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CONFIG_CMDLINE_BOOL=y
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CONFIG_CMDLINE="earlycon"
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