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| author | Tejun Heo <tj@kernel.org> | 2009-08-14 06:00:53 (GMT) |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2009-08-14 06:00:53 (GMT) |
| commit | bcb2107fdbecef3de55d597d23453747af81ba88 (patch) | |
| tree | f5d7095b80a3483f65a58d8eecdb02b06475fa3d /arch/sparc/Kconfig | |
| parent | e933a73f48e3b2d40cfa56d81e2646f194b5a66a (diff) | |
| download | linux-bcb2107fdbecef3de55d597d23453747af81ba88.tar.xz | |
sparc64: use embedding percpu first chunk allocator
sparc64 currently allocates a large page for each cpu and partially
remap them into vmalloc area much like what lpage first chunk
allocator did. As a 4M page is used for each cpu, this results in
very large unit size and also adds TLB pressure due to the double
mapping of pages in the first chunk.
This patch converts sparc64 to use the embedding percpu first chunk
allocator which now knows how to handle NUMA configurations. This
simplifies the code a lot, doesn't incur any extra TLB pressure and
results in better utilization of address space.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/Kconfig')
| -rw-r--r-- | arch/sparc/Kconfig | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index 4f6ed0f..fbd1233 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -95,6 +95,9 @@ config AUDIT_ARCH config HAVE_SETUP_PER_CPU_AREA def_bool y if SPARC64 +config NEED_PER_CPU_EMBED_FIRST_CHUNK + def_bool y if SPARC64 + config GENERIC_HARDIRQS_NO__DO_IRQ bool def_bool y if SPARC64 |