tree cc343ff650135ecd6b66c404923722a56fa03213
parent 7f86361f71df363ee8d68be976c9303cd2d27408
author Paul E. McKenney <paulmck@kernel.org> 1642810432 -0800
committer Paul E. McKenney <paulmck@kernel.org> 1642810432 -0800

srcu: Dynamically allocate srcu_node array

This commit shrinks the srcu_struct structure by converting its ->node
field from a fixed-size compile-time array to a pointer to a dynamically
allocated array.  In kernels built with large values of NR_CPUS that boot
on systems with smaller numbers of CPUs, this can save significant memory.

Reported-by: A cast of thousands
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>