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Chen, Kenneth W 39dde65c99 [PATCH] shared page table for hugetlb page ... Following up with the work on shared page table done by Dave McCracken. This set of patch target shared page table for hugetlb memory only. The shared page table is particular useful in the situation of large number of independent processes sharing large shared memory segments. In the normal page case, the amount of memory saved from process' page table is quite significant. For hugetlb, the saving on page table memory is not the primary objective (as hugetlb itself already cuts down page table overhead significantly), instead, the purpose of using shared page table on hugetlb is to allow faster TLB refill and smaller cache pollution upon TLB miss. With PT sharing, pte entries are shared among hundreds of processes, the cache consumption used by all the page table is smaller and in return, application gets much higher cache hit ratio. One other effect is that cache hit ratio with hardware page walker hitting on pte in cache will be higher and this helps to reduce tlb miss latency. These two effects contribute to higher application performance. Signed-off-by: Ken Chen <kenneth.w.chen@intel.com> Acked-by: Hugh Dickins <hugh@veritas.com> Cc: Dave McCracken <dmccr@us.ibm.com> Cc: William Lee Irwin III <wli@holomorphy.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: David Gibson <david@gibson.dropbear.id.au> Cc: Adam Litke <agl@us.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		18 years ago
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acpi	…
asm-alpha	…
asm-arm	WorkQueue: Fix up arch-specific work items where possible	18 years ago
asm-arm26	…
asm-avr32	[PATCH] Centralise definitions of sector_t and blkcnt_t	18 years ago
asm-cris	…
asm-frv	…
asm-generic	…
asm-h8300	[PATCH] Centralise definitions of sector_t and blkcnt_t	18 years ago
asm-i386	x86[-64]:Remove 'volatile' from atomic_t	18 years ago
asm-ia64	…
asm-m32r	…
asm-m68k	…
asm-m68knommu	[PATCH] m68knommu: remove FP conditionals in ucontext struct	18 years ago
asm-mips	[MIPS] Import updates from i386's i8259.c	18 years ago
asm-parisc	…
asm-powerpc	[PATCH] Centralise definitions of sector_t and blkcnt_t	18 years ago
asm-ppc	[POWERPC] ppc: m48t35 add missing bracket	18 years ago
asm-s390	[PATCH] Centralise definitions of sector_t and blkcnt_t	18 years ago
asm-sh	sh: sh775x/titan fixes for irq header changes.	18 years ago
asm-sh64	…
asm-sparc	…
asm-sparc64	…
asm-um	…
asm-v850	…
asm-x86_64	x86[-64]:Remove 'volatile' from atomic_t	18 years ago
asm-xtensa	…
crypto	…
keys	…
linux	[PATCH] shared page table for hugetlb page	18 years ago
math-emu	…
media	…
mtd	…
net	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6	18 years ago
pcmcia	[PATCH] pcmcia: multifunction card handling fixes	18 years ago
rdma	…
rxrpc	…
scsi	Actually update the fixed up compile failures.	18 years ago
sound	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6	18 years ago
video	…
Kbuild	…