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rcu: Update TREE05.boot to test normal synchronize_rcu()

Add extra parameters for rcutorture module. One is the "nfakewriters"
which is set -1. There will be created number of test-kthreads which
correspond to number of CPUs in a test system. Those threads randomly
invoke synchronize_rcu() call.

Apart of that "rcu_normal" is set to 1, because it is specifically for
a normal synchronize_rcu() testing, also a newly added parameter which
is "rcu_normal_wake_from_gp" is set to 1 also. That prevents interaction
with other callbacks in a system.

Reviewed-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Link: https://lore.kernel.org/r/20250227131613.52683-2-urezki@gmail.com
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>

authored by

Uladzislau Rezki (Sony) and committed by
Boqun Feng a6cea395 8d67c155

+6
+6
tools/testing/selftests/rcutorture/configs/rcu/TREE05.boot
··· 2 2 rcutree.gp_init_delay=3 3 3 rcutree.gp_cleanup_delay=3 4 4 rcupdate.rcu_self_test=1 5 + 6 + # This part is for synchronize_rcu() testing 7 + rcutorture.nfakewriters=-1 8 + rcutorture.gp_sync=1 9 + rcupdate.rcu_normal=1 10 + rcutree.rcu_normal_wake_from_gp=1