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| author | Michel Lespinasse <walken@google.com> | 2012-10-08 16:30:39 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-09 16:22:33 +0900 |
| commit | 910a742d4ba863848c7283d69c21bfa779d3b9a8 (patch) | |
| tree | 324d473754194d806fdd254f5a4e58dfc8b4a221 /lib/Kconfig.debug | |
| parent | bf7ad8eeab995710c766df49c9c69a8592ca0216 (diff) | |
| download | linux-910a742d4ba863848c7283d69c21bfa779d3b9a8.tar.gz linux-910a742d4ba863848c7283d69c21bfa779d3b9a8.tar.xz | |
rbtree: performance and correctness test
This small module helps measure the performance of rbtree insert and
erase.
Additionally, we run a few correctness tests to check that the rbtrees
have all desired properties:
- contains the right number of nodes in the order desired,
- never two consecutive red nodes on any path,
- all paths to leaf nodes have the same number of black nodes,
- root node is black
[akpm@linux-foundation.org: fix printk warning: sparc64 cycles_t is unsigned long]
Signed-off-by: Michel Lespinasse <walken@google.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: David Woodhouse <David.Woodhouse@intel.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Daniel Santos <daniel.santos@pobox.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/Kconfig.debug')
| -rw-r--r-- | lib/Kconfig.debug | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index b7281e4d1473..a4e5d93b0f41 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -1282,6 +1282,13 @@ config LATENCYTOP source mm/Kconfig.debug source kernel/trace/Kconfig +config RBTREE_TEST + tristate "Red-Black tree test" + depends on m && DEBUG_KERNEL + help + A benchmark measuring the performance of the rbtree library. + Also includes rbtree invariant checks. + config PROVIDE_OHCI1394_DMA_INIT bool "Remote debugging over FireWire early on boot" depends on PCI && X86 |