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authorMichel Lespinasse <walken@google.com>2012-10-09 03:30:39 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-10-09 11:22:33 +0400
commit910a742d4ba863848c7283d69c21bfa779d3b9a8 (patch)
tree324d473754194d806fdd254f5a4e58dfc8b4a221 /lib/Kconfig.debug
parentbf7ad8eeab995710c766df49c9c69a8592ca0216 (diff)
downloadlinux-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.debug7
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