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authorHugh Dickins <hugh@veritas.com>2005-11-07 03:57:57 -0500
committerLinus Torvalds <torvalds@g5.osdl.org>2005-11-07 10:53:23 -0500
commit2d4b95f06062d590aef8e44d42cec27b1828119f (patch)
tree7beb1c976d3e08a9ef9cb37fa342e2b4f35e6aab /mm
parent732ee21f2894819781766a0cd88e32bdd630d11e (diff)
[PATCH] Suppress split ptlock on arches which may use one page for multiple page tables
Suppress split ptlock on arches which may use one page for multiple page tables. Reconsider what better to do (particularly on ppc64) later on. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/Kconfig2
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/Kconfig b/mm/Kconfig
index 1a4473fcb2ca..ae9ce6b73e8a 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -126,9 +126,11 @@ comment "Memory hotplug is currently incompatible with Software Suspend"
126# Default to 4 for wider testing, though 8 might be more appropriate. 126# Default to 4 for wider testing, though 8 might be more appropriate.
127# ARM's adjust_pte (unused if VIPT) depends on mm-wide page_table_lock. 127# ARM's adjust_pte (unused if VIPT) depends on mm-wide page_table_lock.
128# PA-RISC's debug spinlock_t is too large for the 32-bit struct page. 128# PA-RISC's debug spinlock_t is too large for the 32-bit struct page.
129# ARM26 and SPARC32 and PPC64 may use one page for multiple page tables.
129# 130#
130config SPLIT_PTLOCK_CPUS 131config SPLIT_PTLOCK_CPUS
131 int 132 int
132 default "4096" if ARM && !CPU_CACHE_VIPT 133 default "4096" if ARM && !CPU_CACHE_VIPT
133 default "4096" if PARISC && DEBUG_SPINLOCK && !64BIT 134 default "4096" if PARISC && DEBUG_SPINLOCK && !64BIT
135 default "4096" if ARM26 || SPARC32 || PPC64
134 default "4" 136 default "4"