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Diffstat (limited to 'arch/s390/Kconfig')
| -rw-r--r-- | arch/s390/Kconfig | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 25510ad..cb418dc 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -423,6 +423,43 @@ config NODES_SHIFT Specify the maximum number of NUMA nodes available on the target system. Increases memory reserved to accommodate various tables. +menu "Select NUMA modes" + depends on NUMA + +config NUMA_EMU + bool "NUMA emulation" + default y + help + Numa emulation mode will split the available system memory into + equal chunks which then are distributed over the configured number + of nodes in a round-robin manner. + + The number of fake nodes is limited by the number of available memory + chunks (i.e. memory size / fake size) and the number of supported + nodes in the kernel. + + The CPUs are assigned to the nodes in a way that partially respects + the original machine topology (if supported by the machine). + Fair distribution of the CPUs is not guaranteed. + +config EMU_SIZE + hex "NUMA emulation memory chunk size" + default 0x10000000 + range 0x400000 0x100000000 + depends on NUMA_EMU + help + Select the default size by which the memory is chopped and then + assigned to emulated NUMA nodes. + + This can be overridden by specifying + + emu_size=<n> + + on the kernel command line where also suffixes K, M, G, and T are + supported. + +endmenu + config SCHED_MC def_bool n |