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scftorture: Adapt memory-ordering test to UP operation

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On uniprocessor systems, smp_call_function() does nothing.  This commit
therefore avoids complaining about the lack of handler accesses in the
single-CPU case where there is no handler.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Paul E. McKenney 2020-07-03 15:23:19 -07:00
parent a7c072ef26
commit 9e66bf03f9
1 changed files with 2 additions and 1 deletions
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3
kernel/scftorture.c
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@ -363,7 +363,8 @@ static void scftorture_invoke_one(struct scf_statistics *scfp, struct torture_ra
scfcp->scfc_out = true;
}
if (scfcp && scfsp->scfs_wait) {
if (WARN_ON_ONCE(!scfcp->scfc_out))
if (WARN_ON_ONCE((num_online_cpus() > 1 || scfsp->scfs_prim == SCF_PRIM_SINGLE) &&
!scfcp->scfc_out))
atomic_inc(&n_mb_out_errs); // Leak rather than trash!
else
kfree(scfcp);