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| author | Davidlohr Bueso <davidlohr.bueso@hp.com> | 2013-04-30 15:28:24 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-04-30 17:04:07 -0700 |
| commit | 4130f0efbfe5adb360328b777afa8e45f7e467f7 (patch) | |
| tree | 1067bb405268e345a2faa59f987491157bc82d2a /lib/rbtree_test.c | |
| parent | 31c3a3fe0777642816045a8dd1b666f1718851d7 (diff) | |
| download | lwn-4130f0efbfe5adb360328b777afa8e45f7e467f7.tar.gz lwn-4130f0efbfe5adb360328b777afa8e45f7e467f7.zip | |
rbtree_test: add extra rbtree integrity check
Account for the rbtree having 2**bh(v)-1 internal nodes.
While this can be seen as a consequence of other checks, Michel states
that it nicely sums up what the other properties are for.
Signed-off-by: Davidlohr Bueso <davidlohr.bueso@hp.com>
Reviewed-by: Michel Lespinasse <walken@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/rbtree_test.c')
| -rw-r--r-- | lib/rbtree_test.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/rbtree_test.c b/lib/rbtree_test.c index af38aedbd874..99515038ff6d 100644 --- a/lib/rbtree_test.c +++ b/lib/rbtree_test.c @@ -117,8 +117,7 @@ static int black_path_count(struct rb_node *rb) static void check(int nr_nodes) { struct rb_node *rb; - int count = 0; - int blacks = 0; + int count = 0, blacks = 0; u32 prev_key = 0; for (rb = rb_first(&root); rb; rb = rb_next(rb)) { @@ -134,7 +133,9 @@ static void check(int nr_nodes) prev_key = node->key; count++; } + WARN_ON_ONCE(count != nr_nodes); + WARN_ON_ONCE(count < (1 << black_path_count(rb_last(&root))) - 1); } static void check_augmented(int nr_nodes) |