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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/interval_tree_test.c
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@@ -19,6 +19,7 @@ __param(int, search_loops, 1000, "Number of iterations searching the tree");
__param(bool, search_all, false, "Searches will iterate all nodes in the tree");
__param(uint, max_endpoint, ~0, "Largest value for the interval's endpoint");
__param(ullong, seed, 3141592653589793238ULL, "Random seed");
static struct rb_root_cached root = RB_ROOT_CACHED;
static struct interval_tree_node *nodes = NULL;
@@ -137,7 +138,7 @@ static int interval_tree_test_init(void)
return -ENOMEM;
}
prandom_seed_state(&rnd, 3141592653589793238ULL);
prandom_seed_state(&rnd, seed);
basic_check();
search_check();