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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 25/52] rcu: Remove rsp parameter from rcu_do_batch() Date: Wed, 29 Aug 2018 15:38:27 -0700 X-Mailer: git-send-email 2.17.1 In-Reply-To: <20180829223830.GA1800@linux.vnet.ibm.com> References: <20180829223830.GA1800@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 18082922-0060-0000-0000-000002A66418 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00009636; HX=3.00000242; KW=3.00000007; PH=3.00000004; SC=3.00000266; SDB=6.01080744; UDB=6.00557498; IPR=6.00860730; MB=3.00023002; MTD=3.00000008; XFM=3.00000015; UTC=2018-08-29 22:39:01 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18082922-0061-0000-0000-00004655B6AA Message-Id: <20180829223854.4055-25-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-1808290220 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org There now is only one rcu_state structure in a given build of the Linux kernel, so there is no need to pass it as a parameter to RCU's functions. This commit therefore removes the rsp parameter from rcu_do_batch(). Signed-off-by: Paul E. McKenney --- kernel/rcu/tree.c | 5 +++-- kernel/rcu/tree_plugin.h | 2 +- 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index c38c9dcb98fe..18161321633e 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -2489,12 +2489,13 @@ int rcutree_dead_cpu(unsigned int cpu) * Invoke any RCU callbacks that have made it to the end of their grace * period. Thottle as specified by rdp->blimit. */ -static void rcu_do_batch(struct rcu_state *rsp, struct rcu_data *rdp) +static void rcu_do_batch(struct rcu_data *rdp) { unsigned long flags; struct rcu_head *rhp; struct rcu_cblist rcl = RCU_CBLIST_INITIALIZER(rcl); long bl, count; + struct rcu_state *rsp = &rcu_state; /* If no callbacks are ready, just return. */ if (!rcu_segcblist_ready_cbs(&rdp->cblist)) { @@ -2807,7 +2808,7 @@ static void invoke_rcu_callbacks(struct rcu_data *rdp) if (unlikely(!READ_ONCE(rcu_scheduler_fully_active))) return; if (likely(!rsp->boost)) { - rcu_do_batch(rsp, rdp); + rcu_do_batch(rdp); return; } invoke_rcu_callbacks_kthread(); diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h index 82f10a6bf266..c678c76a754e 100644 --- a/kernel/rcu/tree_plugin.h +++ b/kernel/rcu/tree_plugin.h @@ -1324,7 +1324,7 @@ static int rcu_spawn_one_boost_kthread(struct rcu_state *rsp, static void rcu_kthread_do_work(void) { - rcu_do_batch(&rcu_state, this_cpu_ptr(&rcu_data)); + rcu_do_batch(this_cpu_ptr(&rcu_data)); } static void rcu_cpu_kthread_setup(unsigned int cpu) -- 2.17.1