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McKenney" To: linux-kernel@vger.kernel.org Cc: mingo@kernel.org, jiangshanlai@gmail.com, dipankar@in.ibm.com, akpm@linux-foundation.org, mathieu.desnoyers@efficios.com, josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com, fweisbec@gmail.com, oleg@redhat.com, joel@joelfernandes.org, "Paul E. McKenney" Subject: [PATCH tip/core/rcu 14/24] rcu: Clean up flavor-related definitions and comments in rcu.h Date: Wed, 29 Aug 2018 15:53:55 -0700 X-Mailer: git-send-email 2.17.1 In-Reply-To: <20180829225340.GA7019@linux.vnet.ibm.com> References: <20180829225340.GA7019@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 18082922-2213-0000-0000-000002E509DC X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00009636; HX=3.00000242; KW=3.00000007; PH=3.00000004; SC=3.00000266; SDB=6.01080749; UDB=6.00557500; IPR=6.00860734; MB=3.00023002; MTD=3.00000008; XFM=3.00000015; UTC=2018-08-29 22:54:11 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18082922-2214-0000-0000-00005B6033D6 Message-Id: <20180829225405.7275-14-paulmck@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-08-29_06:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1807170000 definitions=main-1808290223 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Signed-off-by: Paul E. McKenney --- kernel/rcu/rcu.h | 18 ++++++++++-------- 1 file 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(); \ -- 2.17.1