The patch titled
Subject: lib/rbtree_test.c: add (inorder) traversal test
has been added to the -mm tree. Its filename is
lib-rbtree_testc-add-inorder-traversal-test.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/lib-rbtree_testc-add-inorder-traversal-test.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/lib-rbtree_testc-add-inorder-traversal-test.patch
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------------------------------------------------------
From: Davidlohr Bueso <dave@xxxxxxxxxxxx>
Subject: lib/rbtree_test.c: add (inorder) traversal test
This adds a second test for regular rb-tree testing in that there is no
need to repeat it for the augmented flavor.
Link: http://lkml.kernel.org/r/20170719014603.19029-6-dave@xxxxxxxxxxxx
Signed-off-by: Davidlohr Bueso <dbueso@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/rbtree_test.c | 25 +++++++++++++++++++++++--
1 file changed, 23 insertions(+), 2 deletions(-)
diff -puN lib/rbtree_test.c~lib-rbtree_testc-add-inorder-traversal-test lib/rbtree_test.c
--- a/lib/rbtree_test.c~lib-rbtree_testc-add-inorder-traversal-test
+++ a/lib/rbtree_test.c
@@ -183,6 +183,7 @@ static int __init rbtree_test_init(void)
{
int i, j;
cycles_t time1, time2, time;
+ struct rb_node *node;
nodes = kmalloc(nnodes * sizeof(*nodes), GFP_KERNEL);
if (!nodes)
@@ -206,8 +207,28 @@ static int __init rbtree_test_init(void)
time = time2 - time1;
time = div_u64(time, perf_loops);
- printk(" -> %llu cycles\n", (unsigned long long)time);
+ printk(" -> test 1 (latency of nnodes insert+delete): %llu cycles\n", (unsigned long long)time);
+ for (i = 0; i < nnodes; i++)
+ insert(nodes + i, &root);
+
+ time1 = get_cycles();
+
+ for (i = 0; i < perf_loops; i++) {
+ for (node = rb_first(&root); node; node = rb_next(node))
+ ;
+ }
+
+ time2 = get_cycles();
+ time = time2 - time1;
+
+ time = div_u64(time, perf_loops);
+ printk(" -> test 2 (latency of inorder traversal): %llu cycles\n", (unsigned long long)time);
+
+ for (i = 0; i < nnodes; i++)
+ erase(nodes + i, &root);
+
+ /* run checks */
for (i = 0; i < check_loops; i++) {
init();
for (j = 0; j < nnodes; j++) {
@@ -238,7 +259,7 @@ static int __init rbtree_test_init(void)
time = time2 - time1;
time = div_u64(time, perf_loops);
- printk(" -> %llu cycles\n", (unsigned long long)time);
+ printk(" -> test 1 (latency of nnodes insert+delete): %llu cycles\n", (unsigned long long)time);
for (i = 0; i < check_loops; i++) {
init();
_
Patches currently in -mm which might be from dave@xxxxxxxxxxxx are
rbtree-cache-leftmost-node-internally.patch
rbtree-optimize-root-check-during-rebalancing-loop.patch
rbtree-add-some-additional-comments-for-rebalancing-cases.patch
lib-rbtree_testc-make-input-module-parameters.patch
lib-rbtree_testc-add-inorder-traversal-test.patch
lib-rbtree_testc-support-rb_root_cached.patch
sched-fair-replace-cfs_rq-rb_leftmost.patch
sched-deadline-replace-earliest-dl-and-rq-leftmost-caching.patch
locking-rtmutex-replace-top-waiter-and-pi_waiters-leftmost-caching.patch
block-cfq-replace-cfq_rb_root-leftmost-caching.patch
lib-interval_tree-fast-overlap-detection.patch
lib-interval-tree-correct-comment-wrt-generic-flavor.patch
procfs-use-faster-rb_first_cached.patch
fs-epoll-use-faster-rb_first_cached.patch
mem-memcg-cache-rightmost-node.patch
block-cfq-cache-rightmost-rb_node.patch
--
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