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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 21/52] rcu: Remove rsp parameter from rcu_gp_slow() Date: Wed, 29 Aug 2018 15:38:23 -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: 18082922-0060-0000-0000-000002A6641C 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 22:39:02 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18082922-0061-0000-0000-00004655B6AD Message-Id: <20180829223854.4055-21-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_gp_slow(). Signed-off-by: Paul E. McKenney --- kernel/rcu/tree.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index 752cd23860ed..751c28ddf5b1 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -1820,10 +1820,10 @@ static void note_gp_changes(struct rcu_data *rdp) rcu_gp_kthread_wake(); } -static void rcu_gp_slow(struct rcu_state *rsp, int delay) +static void rcu_gp_slow(int delay) { if (delay > 0 && - !(rcu_seq_ctr(rsp->gp_seq) % + !(rcu_seq_ctr(rcu_state.gp_seq) % (rcu_num_nodes * PER_RCU_NODE_PERIOD * delay))) schedule_timeout_uninterruptible(delay); } @@ -1916,7 +1916,7 @@ static bool rcu_gp_init(struct rcu_state *rsp) raw_spin_unlock_irq_rcu_node(rnp); spin_unlock(&rsp->ofl_lock); } - rcu_gp_slow(rsp, gp_preinit_delay); /* Races with CPU hotplug. */ + rcu_gp_slow(gp_preinit_delay); /* Races with CPU hotplug. */ /* * Set the quiescent-state-needed bits in all the rcu_node @@ -1932,7 +1932,7 @@ static bool rcu_gp_init(struct rcu_state *rsp) */ rsp->gp_state = RCU_GP_INIT; rcu_for_each_node_breadth_first(rsp, rnp) { - rcu_gp_slow(rsp, gp_init_delay); + rcu_gp_slow(gp_init_delay); raw_spin_lock_irqsave_rcu_node(rnp, flags); rdp = this_cpu_ptr(&rcu_data); rcu_preempt_check_blocked_tasks(rsp, rnp); @@ -2058,7 +2058,7 @@ static void rcu_gp_cleanup(struct rcu_state *rsp) rcu_nocb_gp_cleanup(sq); cond_resched_tasks_rcu_qs(); WRITE_ONCE(rsp->gp_activity, jiffies); - rcu_gp_slow(rsp, gp_cleanup_delay); + rcu_gp_slow(gp_cleanup_delay); } rnp = rcu_get_root(); raw_spin_lock_irq_rcu_node(rnp); /* GP before rsp->gp_seq update. */ -- 2.17.1