diff options
Diffstat (limited to 'init/Kconfig')
| -rw-r--r-- | init/Kconfig | 34 |
1 files changed, 31 insertions, 3 deletions
diff --git a/init/Kconfig b/init/Kconfig index 0498af567f70..9082ed33a9cd 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -191,13 +191,16 @@ config HAVE_KERNEL_LZO config HAVE_KERNEL_LZ4 bool +config HAVE_KERNEL_ZSTD + bool + config HAVE_KERNEL_UNCOMPRESSED bool choice prompt "Kernel compression mode" default KERNEL_GZIP - depends on HAVE_KERNEL_GZIP || HAVE_KERNEL_BZIP2 || HAVE_KERNEL_LZMA || HAVE_KERNEL_XZ || HAVE_KERNEL_LZO || HAVE_KERNEL_LZ4 || HAVE_KERNEL_UNCOMPRESSED + depends on HAVE_KERNEL_GZIP || HAVE_KERNEL_BZIP2 || HAVE_KERNEL_LZMA || HAVE_KERNEL_XZ || HAVE_KERNEL_LZO || HAVE_KERNEL_LZ4 || HAVE_KERNEL_ZSTD || HAVE_KERNEL_UNCOMPRESSED help The linux kernel is a kind of self-extracting executable. Several compression algorithms are available, which differ @@ -276,6 +279,16 @@ config KERNEL_LZ4 is about 8% bigger than LZO. But the decompression speed is faster than LZO. +config KERNEL_ZSTD + bool "ZSTD" + depends on HAVE_KERNEL_ZSTD + help + ZSTD is a compression algorithm targeting intermediate compression + with fast decompression speed. It will compress better than GZIP and + decompress around the same speed as LZO, but slower than LZ4. You + will need at least 192 KB RAM or more for booting. The zstd command + line tool is required for compression. + config KERNEL_UNCOMPRESSED bool "None" depends on HAVE_KERNEL_UNCOMPRESSED @@ -492,8 +505,23 @@ config HAVE_SCHED_AVG_IRQ depends on SMP config SCHED_THERMAL_PRESSURE - bool "Enable periodic averaging of thermal pressure" + bool + default y if ARM && ARM_CPU_TOPOLOGY + default y if ARM64 depends on SMP + depends on CPU_FREQ_THERMAL + help + Select this option to enable thermal pressure accounting in the + scheduler. Thermal pressure is the value conveyed to the scheduler + that reflects the reduction in CPU compute capacity resulted from + thermal throttling. Thermal throttling occurs when the performance of + a CPU is capped due to high operating temperatures. + + If selected, the scheduler will be able to balance tasks accordingly, + i.e. put less load on throttled CPUs than on non/less throttled ones. + + This requires the architecture to implement + arch_set_thermal_pressure() and arch_get_thermal_pressure(). config BSD_PROCESS_ACCT bool "BSD Process Accounting" @@ -1957,7 +1985,7 @@ config MMAP_ALLOW_UNINITIALIZED userspace. Since that isn't generally a problem on no-MMU systems, it is normally safe to say Y here. - See Documentation/nommu-mmap.txt for more information. + See Documentation/mm/nommu-mmap.rst for more information. config SYSTEM_DATA_VERIFICATION def_bool n |