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(); _ -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
