On Fri, 2007-08-03 at 11:44 -0700, Paul E. McKenney wrote: > The rcutorture module uses a random-number generator that periodically > calls get_random_bytes() to add entropy. This random-number generator > is invoked from within the RCU read-side critical section, which, in the > case of the synchronize_sched() variant of RCU, has preeemption disabled. > Unfortunately, get_random_bytes() ends up acquiring normal spinlocks, > which can block in -rt, resulting in very large numbers of "scheduling > while atomic" messages. > > This patch takes a very crude approach, simply substituting the time > of day for get_random_bytes(). > > Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx> Acked-by: Josh Triplett <josh@xxxxxxxxxx> - To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
