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authorPaul E. McKenney <paul.mckenney@linaro.org>2010-11-29 21:56:39 -0800
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2011-05-05 23:16:54 -0700
commit12f5f524cafef3ab689929b118f2dfb8bf2be321 (patch)
tree639473556b6edf9b79e0a18d5ba58f80eea76519 /kernel/rcutree.c
parente59fb3120becfb36b22ddb8bd27d065d3cdca499 (diff)
rcu: merge TREE_PREEPT_RCU blocked_tasks[] lists
Combine the current TREE_PREEMPT_RCU ->blocked_tasks[] lists in the rcu_node structure into a single ->blkd_tasks list with ->gp_tasks and ->exp_tasks tail pointers. This is in preparation for RCU priority boosting, which will add a third dimension to the combinatorial explosion in the ->blocked_tasks[] case, but simply a third pointer in the new ->blkd_tasks case. Also update documentation to reflect blocked_tasks[] merge Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Diffstat (limited to 'kernel/rcutree.c')
-rw-r--r--kernel/rcutree.c5
1 files changed, 1 insertions, 4 deletions
diff --git a/kernel/rcutree.c b/kernel/rcutree.c
index 90104a19c56..0ac1cc03f93 100644
--- a/kernel/rcutree.c
+++ b/kernel/rcutree.c
@@ -1901,10 +1901,7 @@ static void __init rcu_init_one(struct rcu_state *rsp,
j / rsp->levelspread[i - 1];
}
rnp->level = i;
- INIT_LIST_HEAD(&rnp->blocked_tasks[0]);
- INIT_LIST_HEAD(&rnp->blocked_tasks[1]);
- INIT_LIST_HEAD(&rnp->blocked_tasks[2]);
- INIT_LIST_HEAD(&rnp->blocked_tasks[3]);
+ INIT_LIST_HEAD(&rnp->blkd_tasks);
}
}