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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2018-07-08 03:12:26 +0200 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2018-08-31 01:03:33 +0200 |
| commit | 7f87c036fea3c17eb6a6e4f4164c67aeb98710ea (patch) | |
| tree | fa17d138e6655243b0d69ed90fc128510a28ce0a | |
| parent | rcu: Clean up flavor-related definitions and comments in Kconfig (diff) | |
| download | linux-7f87c036fea3c17eb6a6e4f4164c67aeb98710ea.tar.xz linux-7f87c036fea3c17eb6a6e4f4164c67aeb98710ea.zip | |
rcu: Clean up flavor-related definitions and comments in rcu.h
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
| -rw-r--r-- | kernel/rcu/rcu.h | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/kernel/rcu/rcu.h b/kernel/rcu/rcu.h index aa3dc08af4b3..5dec94509a7e 100644 --- a/kernel/rcu/rcu.h +++ b/kernel/rcu/rcu.h @@ -176,8 +176,9 @@ static inline unsigned long rcu_seq_diff(unsigned long new, unsigned long old) /* * debug_rcu_head_queue()/debug_rcu_head_unqueue() are used internally - * by call_rcu() and rcu callback execution, and are therefore not part of the - * RCU API. Leaving in rcupdate.h because they are used by all RCU flavors. + * by call_rcu() and rcu callback execution, and are therefore not part + * of the RCU API. These are in rcupdate.h because they are used by all + * RCU implementations. */ #ifdef CONFIG_DEBUG_OBJECTS_RCU_HEAD @@ -328,7 +329,7 @@ static inline void rcu_init_levelspread(int *levelspread, const int *levelcnt) } } -/* Returns first leaf rcu_node of the specified RCU flavor. */ +/* Returns a pointer to the first leaf rcu_node structure. */ #define rcu_first_leaf_node() (rcu_state.level[rcu_num_lvls - 1]) /* Is this rcu_node a leaf? */ @@ -339,7 +340,8 @@ static inline void rcu_init_levelspread(int *levelspread, const int *levelcnt) /* * Do a full breadth-first scan of the {s,}rcu_node structures for the - * specified rcu_state structure. + * specified state structure (for SRCU) or the only rcu_state structure + * (for RCU). */ #define srcu_for_each_node_breadth_first(sp, rnp) \ for ((rnp) = &(sp)->node[0]; \ @@ -348,10 +350,10 @@ static inline void rcu_init_levelspread(int *levelspread, const int *levelcnt) srcu_for_each_node_breadth_first(&rcu_state, 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. + * Scan the leaves of the rcu_node hierarchy for the 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(rnp) \ for ((rnp) = rcu_first_leaf_node(); \ |