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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-07-01 17:47:51 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-07-01 17:47:51 -0700 |
| commit | 2d01eedf1d14432f4db5388a49dc5596a8c5bd02 (patch) | |
| tree | 646525acc0475b2899827c1bfbd25f05ec1b8092 /mm/Kconfig | |
| parent | 6ac15baacb6ecd87c66209627753b96ded3b4515 (diff) | |
| parent | abdd4a7025282fbe3737e1bcb5f51afc8d8ea1b8 (diff) | |
| download | lwn-2d01eedf1d14432f4db5388a49dc5596a8c5bd02.tar.gz lwn-2d01eedf1d14432f4db5388a49dc5596a8c5bd02.zip | |
Merge branch 'akpm' (patches from Andrew)
Merge third patchbomb from Andrew Morton:
- the rest of MM
- scripts/gdb updates
- ipc/ updates
- lib/ updates
- MAINTAINERS updates
- various other misc things
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (67 commits)
genalloc: rename of_get_named_gen_pool() to of_gen_pool_get()
genalloc: rename dev_get_gen_pool() to gen_pool_get()
x86: opt into HAVE_COPY_THREAD_TLS, for both 32-bit and 64-bit
MAINTAINERS: add zpool
MAINTAINERS: BCACHE: Kent Overstreet has changed email address
MAINTAINERS: move Jens Osterkamp to CREDITS
MAINTAINERS: remove unused nbd.h pattern
MAINTAINERS: update brcm gpio filename pattern
MAINTAINERS: update brcm dts pattern
MAINTAINERS: update sound soc intel patterns
MAINTAINERS: remove website for paride
MAINTAINERS: update Emulex ocrdma email addresses
bcache: use kvfree() in various places
libcxgbi: use kvfree() in cxgbi_free_big_mem()
target: use kvfree() in session alloc and free
IB/ehca: use kvfree() in ipz_queue_{cd}tor()
drm/nouveau/gem: use kvfree() in u_free()
drm: use kvfree() in drm_free_large()
cxgb4: use kvfree() in t4_free_mem()
cxgb3: use kvfree() in cxgb_free_mem()
...
Diffstat (limited to 'mm/Kconfig')
| -rw-r--r-- | mm/Kconfig | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/mm/Kconfig b/mm/Kconfig index c180af880ed5..e79de2bd12cd 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -636,3 +636,21 @@ config MAX_STACK_SIZE_MB changed to a smaller value in which case that is used. A sane initial value is 80 MB. + +# For architectures that support deferred memory initialisation +config ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT + bool + +config DEFERRED_STRUCT_PAGE_INIT + bool "Defer initialisation of struct pages to kswapd" + default n + depends on ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT + depends on MEMORY_HOTPLUG + help + Ordinarily all struct pages are initialised during early boot in a + single thread. On very large machines this can take a considerable + amount of time. If this option is set, large machines will bring up + a subset of memmap at boot and then initialise the rest in parallel + when kswapd starts. This has a potential performance impact on + processes running early in the lifetime of the systemm until kswapd + finishes the initialisation. |