From 95f93e97ed0f56f54f74293a0a82e05599d5078d Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Sun, 6 Nov 2022 18:16:14 -0800 Subject: torture: Seed torture_random_state on CPU The DEFINE_TORTURE_RANDOM_PERCPU() macro defines per-CPU random-number generators for torture testing, but the seeds for each CPU's instance will be identical if they are first used at the same time. This commit therefore adds the CPU number to the mix when reseeding. Signed-off-by: Paul E. McKenney --- kernel/torture.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'kernel/torture.c') diff --git a/kernel/torture.c b/kernel/torture.c index 789aeb0e1159..29afc62f2bfe 100644 --- a/kernel/torture.c +++ b/kernel/torture.c @@ -450,7 +450,7 @@ unsigned long torture_random(struct torture_random_state *trsp) { if (--trsp->trs_count < 0) { - trsp->trs_state += (unsigned long)local_clock(); + trsp->trs_state += (unsigned long)local_clock() + raw_smp_processor_id(); trsp->trs_count = TORTURE_RANDOM_REFRESH; } trsp->trs_state = trsp->trs_state * TORTURE_RANDOM_MULT + -- cgit v1.2.3-58-ga151