rcutorture: Allow negative values of nreaders to oversubscribe

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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. ]

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This commit is contained in:

Paul E. McKenney 2015-03-12 13:55:48 -07:00

parent 6530b3f4c5

commit 3838cc1850

2 changed files with 6 additions and 2 deletions

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6

Documentation/kernel-parameters.txt

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2

kernel/rcu/rcutorture.c

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