diff options
Diffstat (limited to 'arch/sparc/Kconfig')
| -rw-r--r-- | arch/sparc/Kconfig | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index 84437a4c6545..8535e19062f6 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -32,6 +32,7 @@ config SPARC select GENERIC_IRQ_SHOW select ARCH_WANT_IPC_PARSE_VERSION select GENERIC_PCI_IOMAP + select HAS_IOPORT select HAVE_NMI_WATCHDOG if SPARC64 select HAVE_CBPF_JIT if SPARC32 select HAVE_EBPF_JIT if SPARC64 @@ -270,18 +271,17 @@ config ARCH_SPARSEMEM_DEFAULT def_bool y if SPARC64 config ARCH_FORCE_MAX_ORDER - int "Maximum zone order" - default "13" + int "Order of maximal physically contiguous allocations" + default "12" help - The kernel memory allocator divides physically contiguous memory - blocks into "zones", where each zone is a power of two number of - pages. This option selects the largest power of two that the kernel - keeps in the memory allocator. If you need to allocate very large - blocks of physically contiguous memory, then you may need to - increase this value. - - This config option is actually maximum order plus one. For example, - a value of 13 means that the largest free memory block is 2^12 pages. + The kernel page allocator limits the size of maximal physically + contiguous allocations. The limit is called MAX_ORDER and it + defines the maximal power of two of number of pages that can be + allocated as a single contiguous block. This option allows + overriding the default setting when ability to allocate very + large blocks of physically contiguous memory is required. + + Don't change if unsure. if SPARC64 || COMPILE_TEST source "kernel/power/Kconfig" |