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(parent: 4300aa6) | patch
rcu: permit discontiguous cpu_possible_mask CPU numbering
authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Wed, 14 Apr 2010 23:48:11 +0000 (16:48 -0700)
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Mon, 10 May 2010 18:08:35 +0000 (11:08 -0700)
commit4a90a0681cf6cd21cd444184302aa045156486b3
tree5e54587e0844d51f6c015f4c489cbf021c9db509tree | snapshot (tar.gz zip)
parent4300aa642cc9ecb35f2e0683dd294fb790ef028ccommit | diff
rcu: permit discontiguous cpu_possible_mask CPU numbering

TREE_RCU assumes that CPU numbering is contiguous, but some users need
large holes in the numbering to better map to hardware layout.  This patch
makes TREE_RCU (and TREE_PREEMPT_RCU) tolerate large holes in the CPU
numbering.  However, NR_CPUS must still be greater than the largest
CPU number.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
kernel/rcutree.c diff | blob | blame | history
kernel source for telekom puls (alcatel/mediatek)