linux-kernel - [PATCH v2 13/27] context_tracking, rcu: Rename rcu_dynticks_task*() into rcu

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Message-ID: <20240430091740.1826862-14-vschneid@redhat.com>
Date: Tue, 30 Apr 2024 11:17:17 +0200
From: Valentin Schneider <vschneid@...hat.com>
To: rcu@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Frederic Weisbecker <frederic@...nel.org>,
	"Paul E. McKenney" <paulmck@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Neeraj Upadhyay <quic_neeraju@...cinc.com>,
	Joel Fernandes <joel@...lfernandes.org>,
	Josh Triplett <josh@...htriplett.org>,
	Boqun Feng <boqun.feng@...il.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	Lai Jiangshan <jiangshanlai@...il.com>,
	Zqiang <qiang.zhang1211@...il.com>
Subject: [PATCH v2 13/27] context_tracking, rcu: Rename rcu_dynticks_task*() into rcu_task*()

The context_tracking.state RCU_DYNTICKS subvariable has been renamed to
RCU_WATCHING, and the 'dynticks' prefix can be dropped without losing any
meaning.

Suggested-by: Frederic Weisbecker <frederic@...nel.org>
Signed-off-by: Valentin Schneider <vschneid@...hat.com>
---
 kernel/context_tracking.c | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/kernel/context_tracking.c b/kernel/context_tracking.c
index 647939b0befd9..9c8f7b9191cd4 100644
--- a/kernel/context_tracking.c
+++ b/kernel/context_tracking.c
@@ -39,7 +39,7 @@ EXPORT_SYMBOL_GPL(context_tracking);
 #define TPS(x)  tracepoint_string(x)
 
 /* Record the current task on dyntick-idle entry. */
-static __always_inline void rcu_dynticks_task_enter(void)
+static __always_inline void rcu_task_enter(void)
 {
 #if defined(CONFIG_TASKS_RCU) && defined(CONFIG_NO_HZ_FULL)
 	WRITE_ONCE(current->rcu_tasks_idle_cpu, smp_processor_id());
@@ -47,7 +47,7 @@ static __always_inline void rcu_dynticks_task_enter(void)
 }
 
 /* Record no current task on dyntick-idle exit. */
-static __always_inline void rcu_dynticks_task_exit(void)
+static __always_inline void rcu_task_exit(void)
 {
 #if defined(CONFIG_TASKS_RCU) && defined(CONFIG_NO_HZ_FULL)
 	WRITE_ONCE(current->rcu_tasks_idle_cpu, -1);
@@ -55,7 +55,7 @@ static __always_inline void rcu_dynticks_task_exit(void)
 }
 
 /* Turn on heavyweight RCU tasks trace readers on idle/user entry. */
-static __always_inline void rcu_dynticks_task_trace_enter(void)
+static __always_inline void rcu_task_trace_enter(void)
 {
 #ifdef CONFIG_TASKS_TRACE_RCU
 	if (IS_ENABLED(CONFIG_TASKS_TRACE_RCU_READ_MB))
@@ -64,7 +64,7 @@ static __always_inline void rcu_dynticks_task_trace_enter(void)
 }
 
 /* Turn off heavyweight RCU tasks trace readers on idle/user exit. */
-static __always_inline void rcu_dynticks_task_trace_exit(void)
+static __always_inline void rcu_task_trace_exit(void)
 {
 #ifdef CONFIG_TASKS_TRACE_RCU
 	if (IS_ENABLED(CONFIG_TASKS_TRACE_RCU_READ_MB))
@@ -87,7 +87,7 @@ static noinstr void ct_kernel_exit_state(int offset)
 	 * critical sections, and we also must force ordering with the
 	 * next idle sojourn.
 	 */
-	rcu_dynticks_task_trace_enter();  // Before ->dynticks update!
+	rcu_task_trace_enter();  // Before ->dynticks update!
 	seq = ct_state_inc(offset);
 	// RCU is no longer watching.  Better be in extended quiescent state!
 	WARN_ON_ONCE(IS_ENABLED(CONFIG_RCU_EQS_DEBUG) && (seq & CT_RCU_WATCHING));
@@ -109,7 +109,7 @@ static noinstr void ct_kernel_enter_state(int offset)
 	 */
 	seq = ct_state_inc(offset);
 	// RCU is now watching.  Better not be in an extended quiescent state!
-	rcu_dynticks_task_trace_exit();  // After ->dynticks update!
+	rcu_task_trace_exit();  // After ->dynticks update!
 	WARN_ON_ONCE(IS_ENABLED(CONFIG_RCU_EQS_DEBUG) && !(seq & CT_RCU_WATCHING));
 }
 
@@ -149,7 +149,7 @@ static void noinstr ct_kernel_exit(bool user, int offset)
 	// RCU is watching here ...
 	ct_kernel_exit_state(offset);
 	// ... but is no longer watching here.
-	rcu_dynticks_task_enter();
+	rcu_task_enter();
 }
 
 /*
@@ -173,7 +173,7 @@ static void noinstr ct_kernel_enter(bool user, int offset)
 		ct->nesting++;
 		return;
 	}
-	rcu_dynticks_task_exit();
+	rcu_task_exit();
 	// RCU is not watching here ...
 	ct_kernel_enter_state(offset);
 	// ... but is watching here.
@@ -240,7 +240,7 @@ void noinstr ct_nmi_exit(void)
 	// ... but is no longer watching here.
 
 	if (!in_nmi())
-		rcu_dynticks_task_enter();
+		rcu_task_enter();
 }
 
 /**
@@ -274,7 +274,7 @@ void noinstr ct_nmi_enter(void)
 	if (rcu_dynticks_curr_cpu_in_eqs()) {
 
 		if (!in_nmi())
-			rcu_dynticks_task_exit();
+			rcu_task_exit();
 
 		// RCU is not watching here ...
 		ct_kernel_enter_state(CT_RCU_WATCHING);
-- 
2.43.0