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| author | Paul E. McKenney <paulmck@kernel.org> | 2022-11-06 18:16:14 -0800 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2023-01-03 17:52:54 -0800 |
| commit | 95f93e97ed0f56f54f74293a0a82e05599d5078d (patch) | |
| tree | 7219e80f6e48e23014daeb1175a4048b84f17530 /kernel/torture.c | |
| parent | 1b929c02afd37871d5afb9d498426f83432e71c2 (diff) | |
| download | linux-95f93e97ed0f56f54f74293a0a82e05599d5078d.tar.gz linux-95f93e97ed0f56f54f74293a0a82e05599d5078d.tar.bz2 linux-95f93e97ed0f56f54f74293a0a82e05599d5078d.zip | |
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 <paulmck@kernel.org>
Diffstat (limited to 'kernel/torture.c')
| -rw-r--r-- | kernel/torture.c | 2 |
1 files changed, 1 insertions, 1 deletions
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 + |