5f601902c6
This patch replaces the page table assisted object mapping method, which has x86 dependencies, with a arch-independent method that does a simple copy into a temporary per-cpu buffer. While a copy seems like it would be worse than mapping the pages, tests demonstrate the copying is always faster and, in the case of running inside a KVM guest, roughly 4x faster. Signed-off-by: Seth Jennings <sjenning@linux.vnet.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 lines
442 B
Plaintext
11 lines
442 B
Plaintext
config ZSMALLOC
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tristate "Memory allocator for compressed pages"
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default n
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help
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zsmalloc is a slab-based memory allocator designed to store
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compressed RAM pages. zsmalloc uses virtual memory mapping
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in order to reduce fragmentation. However, this results in a
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non-standard allocator interface where a handle, not a pointer, is
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returned by an alloc(). This handle must be mapped in order to
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access the allocated space.
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