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lib/rbtree: add random seed

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Current test use pseudo rand function with fixed seed, which means the
test data is the same pattern each time.

Add random seed parameter to randomize the test.

Link: https://lkml.kernel.org/r/20250310074938.26756-4-richard.weiyang@gmail.com
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Michel Lespinasse <michel@lespinasse.org>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Wei Yang 2025-03-10 07:49:34 +00:00 • committed by Andrew Morton
parent 3e1d58cd5d
commit 16b1936ae6
6 changed files with 15 additions and 4 deletions
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3
lib/rbtree_test.c
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@ -14,6 +14,7 @@
__param(int, nnodes, 100, "Number of nodes in the rb-tree");
__param(int, perf_loops, 1000, "Number of iterations modifying the rb-tree");
__param(int, check_loops, 100, "Number of iterations modifying and verifying the rb-tree");
__param(ullong, seed, 3141592653589793238ULL, "Random seed");
struct test_node {
u32 key;
@ -402,7 +403,7 @@ static int __init rbtree_test_init(void)
if (!nodes)
return -ENOMEM;
prandom_seed_state(&rnd, 3141592653589793238ULL);
prandom_seed_state(&rnd, seed);
basic_check();
augmented_check();