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torture: Seed torture_random_state on CPU

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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 <paulmck@kernel.org>
This commit is contained in:
Paul E. McKenney
2022-11-06 18:16:14 -08:00
parent 1b929c02af
commit 95f93e97ed
1 changed files with 1 additions and 1 deletions
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2
kernel/torture.c
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@@ -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 +