tree 10c704c147266b9083bc0f9a16e51116847057f4
parent 6530b3f4c5043aa8ef66faa8296291b1ea6ba2eb
author Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1426193748 -0700
committer Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1432756797 -0700

rcutorture: Allow negative values of nreaders to oversubscribe

By default, with rcutorture.nreaders equal to -1, rcutorture provisions
N-1 reader kthreads, where N is the number of CPUs.  This avoids
rcutorture-induced stalls, but also avoids heavier levels of torture.
This commit therefore allows negative values of rcutorture.nreaders
to specify larger numbers of reader kthreads, so that for example
rcutorture.nreaders=-2 provisions N kthreads and rcutorture.nreaders=-5
provisions N+3 kthreads.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
[ paulmck: Update documentation, as suggested by Josh Triplett. ]