srcutree: Make init_srcu_struct_atomic() prevent transition to big

The is_atomic parameter of init_srcu_struct_fields() exists so that
atomic SRCU never transitions to big, but neither
init_srcu_struct_atomic() nor its lockdep counterpart
__init_srcu_struct_atomic() sets it.

On systems where srcutree.convert_to_big selects SRCU_SIZING_INIT,
this needlessly allocates a full srcu_node combining tree for any
dynamically initialized atomic srcu_struct, despite atomic SRCU
having neither callbacks nor srcu_barrier() operations.

Pass true from both atomic entry points, adding an is_atomic parameter
to __init_srcu_struct_common().

Signed-off-by: Kunwu Chan <kunwu.chan@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

0 files changed, 0 insertions, 0 deletions