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author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-03-15 21:07:53 +0100 |
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committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-04-18 20:38:21 +0200 |
commit | efbe451d46af62369226e42b98dbcd95b6940a63 (patch) | |
tree | f3bad6628df15667a630bf4edf82de6ae29be6c3 /kernel | |
parent | rcu: Remove redundant levelcnt[] array from rcu_init_one() (diff) | |
download | linux-efbe451d46af62369226e42b98dbcd95b6940a63.tar.xz linux-efbe451d46af62369226e42b98dbcd95b6940a63.zip |
srcu: Move rcu_node traversal macros to rcu.h
This commit moves rcu_for_each_node_breadth_first(),
rcu_for_each_nonleaf_node_breadth_first(), and
rcu_for_each_leaf_node() from kernel/rcu/tree.h to
kernel/rcu/rcu.h so that SRCU can access them.
This commit is code-movement only.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel')
-rw-r--r-- | kernel/rcu/rcu.h | 35 | ||||
-rw-r--r-- | kernel/rcu/tree.h | 35 |
2 files changed, 35 insertions, 35 deletions
diff --git a/kernel/rcu/rcu.h b/kernel/rcu/rcu.h index 87326479b39a..5c1798ec32f7 100644 --- a/kernel/rcu/rcu.h +++ b/kernel/rcu/rcu.h @@ -224,6 +224,41 @@ static inline void rcu_init_levelspread(int *levelspread, const int *levelcnt) } } +/* + * Do a full breadth-first scan of the rcu_node structures for the + * specified rcu_state structure. + */ +#define rcu_for_each_node_breadth_first(rsp, rnp) \ + for ((rnp) = &(rsp)->node[0]; \ + (rnp) < &(rsp)->node[rcu_num_nodes]; (rnp)++) + +/* + * Do a breadth-first scan of the non-leaf rcu_node structures for the + * specified rcu_state structure. Note that if there is a singleton + * rcu_node tree with but one rcu_node structure, this loop is a no-op. + */ +#define rcu_for_each_nonleaf_node_breadth_first(rsp, rnp) \ + for ((rnp) = &(rsp)->node[0]; \ + (rnp) < (rsp)->level[rcu_num_lvls - 1]; (rnp)++) + +/* + * Scan the leaves of the rcu_node hierarchy for the specified rcu_state + * structure. Note that if there is a singleton rcu_node tree with but + * one rcu_node structure, this loop -will- visit the rcu_node structure. + * It is still a leaf node, even if it is also the root node. + */ +#define rcu_for_each_leaf_node(rsp, rnp) \ + for ((rnp) = (rsp)->level[rcu_num_lvls - 1]; \ + (rnp) < &(rsp)->node[rcu_num_nodes]; (rnp)++) + +/* + * Iterate over all possible CPUs in a leaf RCU node. + */ +#define for_each_leaf_node_possible_cpu(rnp, cpu) \ + for ((cpu) = cpumask_next(rnp->grplo - 1, cpu_possible_mask); \ + cpu <= rnp->grphi; \ + cpu = cpumask_next((cpu), cpu_possible_mask)) + #endif /* #if defined(SRCU) || !defined(TINY_RCU) */ #endif /* __LINUX_RCU_H */ diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h index 1bec3958d44f..a2a45cb629d6 100644 --- a/kernel/rcu/tree.h +++ b/kernel/rcu/tree.h @@ -193,41 +193,6 @@ struct rcu_node { #define leaf_node_cpu_bit(rnp, cpu) (1UL << ((cpu) - (rnp)->grplo)) /* - * Do a full breadth-first scan of the rcu_node structures for the - * specified rcu_state structure. - */ -#define rcu_for_each_node_breadth_first(rsp, rnp) \ - for ((rnp) = &(rsp)->node[0]; \ - (rnp) < &(rsp)->node[rcu_num_nodes]; (rnp)++) - -/* - * Do a breadth-first scan of the non-leaf rcu_node structures for the - * specified rcu_state structure. Note that if there is a singleton - * rcu_node tree with but one rcu_node structure, this loop is a no-op. - */ -#define rcu_for_each_nonleaf_node_breadth_first(rsp, rnp) \ - for ((rnp) = &(rsp)->node[0]; \ - (rnp) < (rsp)->level[rcu_num_lvls - 1]; (rnp)++) - -/* - * Scan the leaves of the rcu_node hierarchy for the specified rcu_state - * structure. Note that if there is a singleton rcu_node tree with but - * one rcu_node structure, this loop -will- visit the rcu_node structure. - * It is still a leaf node, even if it is also the root node. - */ -#define rcu_for_each_leaf_node(rsp, rnp) \ - for ((rnp) = (rsp)->level[rcu_num_lvls - 1]; \ - (rnp) < &(rsp)->node[rcu_num_nodes]; (rnp)++) - -/* - * Iterate over all possible CPUs in a leaf RCU node. - */ -#define for_each_leaf_node_possible_cpu(rnp, cpu) \ - for ((cpu) = cpumask_next(rnp->grplo - 1, cpu_possible_mask); \ - cpu <= rnp->grphi; \ - cpu = cpumask_next((cpu), cpu_possible_mask)) - -/* * Union to allow "aggregate OR" operation on the need for a quiescent * state by the normal and expedited grace periods. */ |