rcutorture: Select from only online CPUs

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The rcutorture jitter.sh script selects a random CPU but does not check
if it is offline or online. This leads to taskset errors many times. On
my machine, hyper threading is disabled so half the cores are offline
causing taskset errors a lot of times. Let us fix this by checking from
only the online CPUs on the system.

Cc: rcu@vger.kernel.org
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>

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Joel Fernandes (Google) 2019-03-26 15:24:10 -04:00 • committed by Paul E. McKenney

parent a188339ca5

commit e0e2147c1a

1 changed files with 3 additions and 2 deletions

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tools/testing/selftests/rcutorture/bin/jitter.sh

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