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McKenney" , Peter Zijlstra , Neeraj Upadhyay , Joel Fernandes , Josh Triplett , Boqun Feng , Steven Rostedt , Mathieu Desnoyers , Lai Jiangshan , Zqiang Subject: [PATCH v3 16/25] rcu: Rename rcu_dynticks_in_eqs() into rcu_watching_snap_in_eqs() Date: Wed, 24 Jul 2024 16:43:16 +0200 Message-ID: <20240724144325.3307148-17-vschneid@redhat.com> In-Reply-To: <20240724144325.3307148-1-vschneid@redhat.com> References: <20240724144325.3307148-1-vschneid@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 Content-Type: text/plain; charset="utf-8" The context_tracking.state RCU_DYNTICKS subvariable has been renamed to RCU_WATCHING, reflect that change in the related helpers. While at it, update a comment that still refers to rcu_dynticks_snap(), which was removed by commit: 7be2e6323b9b ("rcu: Remove full memory barrier on RCU stall printout") Signed-off-by: Valentin Schneider Reviewed-by: Frederic Weisbecker --- kernel/rcu/tree.c | 8 ++++---- kernel/rcu/tree_exp.h | 2 +- kernel/rcu/tree_stall.h | 2 +- 3 files changed, 6 insertions(+), 6 deletions(-) diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index ffec0e7513466..7c2bd7e511579 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -300,10 +300,10 @@ static void rcu_watching_online(void) } =20 /* - * Return true if the snapshot returned from rcu_dynticks_snap() + * Return true if the snapshot returned from ct_rcu_watching() * indicates that RCU is in an extended quiescent state. */ -static bool rcu_dynticks_in_eqs(int snap) +static bool rcu_watching_snap_in_eqs(int snap) { return !(snap & CT_RCU_WATCHING); } @@ -769,7 +769,7 @@ static int dyntick_save_progress_counter(struct rcu_dat= a *rdp) * with chained smp_mb__after_unlock_lock(). */ rdp->dynticks_snap =3D ct_rcu_watching_cpu_acquire(rdp->cpu); - if (rcu_dynticks_in_eqs(rdp->dynticks_snap)) { + if (rcu_watching_snap_in_eqs(rdp->dynticks_snap)) { trace_rcu_fqs(rcu_state.name, rdp->gp_seq, rdp->cpu, TPS("dti")); rcu_gpnum_ovf(rdp->mynode, rdp); return 1; @@ -4793,7 +4793,7 @@ rcu_boot_init_percpu_data(int cpu) rdp->grpmask =3D leaf_node_cpu_bit(rdp->mynode, cpu); INIT_WORK(&rdp->strict_work, strict_work_handler); WARN_ON_ONCE(ct->nesting !=3D 1); - WARN_ON_ONCE(rcu_dynticks_in_eqs(ct_rcu_watching_cpu(cpu))); + WARN_ON_ONCE(rcu_watching_snap_in_eqs(ct_rcu_watching_cpu(cpu))); rdp->barrier_seq_snap =3D rcu_state.barrier_sequence; rdp->rcu_ofl_gp_seq =3D rcu_state.gp_seq; rdp->rcu_ofl_gp_state =3D RCU_GP_CLEANED; diff --git a/kernel/rcu/tree_exp.h b/kernel/rcu/tree_exp.h index 89cbadb15a4e7..8453da73a7df2 100644 --- a/kernel/rcu/tree_exp.h +++ b/kernel/rcu/tree_exp.h @@ -369,7 +369,7 @@ static void __sync_rcu_exp_select_node_cpus(struct rcu_= exp_work *rewp) * smp_mb__after_unlock_lock(). */ snap =3D ct_rcu_watching_cpu_acquire(cpu); - if (rcu_dynticks_in_eqs(snap)) + if (rcu_watching_snap_in_eqs(snap)) mask_ofl_test |=3D mask; else rdp->exp_dynticks_snap =3D snap; diff --git a/kernel/rcu/tree_stall.h b/kernel/rcu/tree_stall.h index ec49f0155becc..e933c6a58d5fd 100644 --- a/kernel/rcu/tree_stall.h +++ b/kernel/rcu/tree_stall.h @@ -501,7 +501,7 @@ static void print_cpu_stall_info(int cpu) } delta =3D rcu_seq_ctr(rdp->mynode->gp_seq - rdp->rcu_iw_gp_seq); falsepositive =3D rcu_is_gp_kthread_starving(NULL) && - rcu_dynticks_in_eqs(ct_rcu_watching_cpu(cpu)); + rcu_watching_snap_in_eqs(ct_rcu_watching_cpu(cpu)); rcuc_starved =3D rcu_is_rcuc_kthread_starving(rdp, &j); if (rcuc_starved) // Print signed value, as negative values indicate a probable bug. --=20 2.43.0