diff options
Diffstat (limited to 'arch/powerpc/Kconfig')
-rw-r--r-- | arch/powerpc/Kconfig | 40 |
1 files changed, 20 insertions, 20 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 625342e1a73..1d4d19f6d6e 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig | |||
@@ -211,26 +211,6 @@ source kernel/Kconfig.hz | |||
211 | source kernel/Kconfig.preempt | 211 | source kernel/Kconfig.preempt |
212 | source "fs/Kconfig.binfmt" | 212 | source "fs/Kconfig.binfmt" |
213 | 213 | ||
214 | config FORCE_MAX_ZONEORDER | ||
215 | int "Maximum zone order" | ||
216 | default "9" if PPC_64K_PAGES | ||
217 | default "13" if PPC64 | ||
218 | default "11" | ||
219 | help | ||
220 | The kernel memory allocator divides physically contiguous memory | ||
221 | blocks into "zones", where each zone is a power of two number of | ||
222 | pages. This option selects the largest power of two that the kernel | ||
223 | keeps in the memory allocator. If you need to allocate very large | ||
224 | blocks of physically contiguous memory, then you may need to | ||
225 | increase this value. | ||
226 | |||
227 | This config option is actually maximum order plus one. For example, | ||
228 | a value of 11 means that the largest free memory block is 2^10 pages. | ||
229 | |||
230 | The page size is not necessarily 4KB. For example, on 64-bit | ||
231 | systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep | ||
232 | this in mind when choosing a value for this option. | ||
233 | |||
234 | config HUGETLB_PAGE_SIZE_VARIABLE | 214 | config HUGETLB_PAGE_SIZE_VARIABLE |
235 | bool | 215 | bool |
236 | depends on HUGETLB_PAGE | 216 | depends on HUGETLB_PAGE |
@@ -403,6 +383,26 @@ config PPC_64K_PAGES | |||
403 | while on hardware with such support, it will be used to map | 383 | while on hardware with such support, it will be used to map |
404 | normal application pages. | 384 | normal application pages. |
405 | 385 | ||
386 | config FORCE_MAX_ZONEORDER | ||
387 | int "Maximum zone order" | ||
388 | default "9" if PPC_64K_PAGES | ||
389 | default "13" if PPC64 && !PPC_64K_PAGES | ||
390 | default "11" | ||
391 | help | ||
392 | The kernel memory allocator divides physically contiguous memory | ||
393 | blocks into "zones", where each zone is a power of two number of | ||
394 | pages. This option selects the largest power of two that the kernel | ||
395 | keeps in the memory allocator. If you need to allocate very large | ||
396 | blocks of physically contiguous memory, then you may need to | ||
397 | increase this value. | ||
398 | |||
399 | This config option is actually maximum order plus one. For example, | ||
400 | a value of 11 means that the largest free memory block is 2^10 pages. | ||
401 | |||
402 | The page size is not necessarily 4KB. For example, on 64-bit | ||
403 | systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep | ||
404 | this in mind when choosing a value for this option. | ||
405 | |||
406 | config PPC_SUBPAGE_PROT | 406 | config PPC_SUBPAGE_PROT |
407 | bool "Support setting protections for 4k subpages" | 407 | bool "Support setting protections for 4k subpages" |
408 | depends on PPC_64K_PAGES | 408 | depends on PPC_64K_PAGES |