tree 1c31ff0a61ac00f9d03a90af054aad76036f1557
parent b864f89ff61492f56b4e8c6713a5efec6540a0e2
author Paul E. McKenney <paulmck@kernel.org> 1590517323 -0700
committer Paul E. McKenney <paulmck@kernel.org> 1593457245 -0700

refperf: Convert reader_task structure's "start" field to int

This commit converts the reader_task structure's "start" field to int
in order to demote a full barrier to an smp_load_acquire() and also to
simplify the code a bit.  While in the area, and to enlist the compiler's
help in ensuring that nothing was missed, the field's name was changed
to start_reader.

Also while in the area, change the main_func() store to use
smp_store_release() to further fortify against wait/wake races.

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