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| author |   Steve Capper <steve.capper@linaro.org> | 2014-10-09 15:29:25 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2014-10-09 22:26:01 -0400 |
| commit | 29e5694054149acd25b0d5538c95fb6d64478315 (patch) | |
| tree | 1f496525d51e1989b3415bf275034213a639bbc8 /include/linux/mm.h | |
| parent | arm64: mm: enable HAVE_RCU_TABLE_FREE logic (diff) | |
| download | linux-dev-29e5694054149acd25b0d5538c95fb6d64478315.tar.xz linux-dev-29e5694054149acd25b0d5538c95fb6d64478315.zip | |
arm64: mm: enable RCU fast_gup
Activate the RCU fast_gup for ARM64. We also need to force THP splits to
broadcast an IPI s.t. we block in the fast_gup page walker. As THP
splits are comparatively rare, this should not lead to a noticeable
performance degradation.
Some pre-requisite functions pud_write and pud_page are also added.
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Steve Capper <steve.capper@linaro.org>
Tested-by: Dann Frazier <dann.frazier@canonical.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Christoffer Dall <christoffer.dall@linaro.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/mm.h')
0 files changed, 0 insertions, 0 deletions