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From: "Paul E. McKenney" <paulmck@kernel.org>
To: rcu@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, kernel-team@fb.com,
	rostedt@goodmis.org, Frederic Weisbecker <frederic@kernel.org>,
	Nicolas Saenz Julienne <nsaenz@kernel.org>,
	Peter Zijlstra <peterz@infradead.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Neeraj Upadhyay <quic_neeraju@quicinc.com>,
	Uladzislau Rezki <uladzislau.rezki@sony.com>,
	Joel Fernandes <joel@joelfernandes.org>,
	Boqun Feng <boqun.feng@gmail.com>,
	Marcelo Tosatti <mtosatti@redhat.com>,
	Xiongfeng Wang <wangxiongfeng2@huawei.com>,
	Yu Liao <liaoyu15@huawei.com>, Phil Auld <pauld@redhat.com>,
	Paul Gortmaker <paul.gortmaker@windriver.com>,
	Alex Belits <abelits@marvell.com>,
	"Paul E . McKenney" <paulmck@kernel.org>
Subject: [PATCH rcu 03/23] context_tracking: Remove unused context_tracking_in_user()
Date: Mon, 20 Jun 2022 16:10:09 -0700	[thread overview]
Message-ID: <20220620231029.3844583-3-paulmck@kernel.org> (raw)
In-Reply-To: <20220620231027.GA3844372@paulmck-ThinkPad-P17-Gen-1>

From: Frederic Weisbecker <frederic@kernel.org>

This function is not used and CT_WARN_ON() coupled with ct_state() is
the preferred way to assert context tracking state values.

Reported-by: Nicolas Saenz Julienne <nsaenz@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Neeraj Upadhyay <quic_neeraju@quicinc.com>
Cc: Uladzislau Rezki <uladzislau.rezki@sony.com>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Nicolas Saenz Julienne <nsaenz@kernel.org>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Cc: Yu Liao <liaoyu15@huawei.com>
Cc: Phil Auld <pauld@redhat.com>
Cc: Paul Gortmaker<paul.gortmaker@windriver.com>
Cc: Alex Belits <abelits@marvell.com>
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
 include/linux/context_tracking_state.h | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/include/linux/context_tracking_state.h b/include/linux/context_tracking_state.h
index ae1e63e269474..edc7b46376a6b 100644
--- a/include/linux/context_tracking_state.h
+++ b/include/linux/context_tracking_state.h
@@ -41,12 +41,7 @@ static inline bool context_tracking_enabled_this_cpu(void)
 	return context_tracking_enabled() && __this_cpu_read(context_tracking.active);
 }
 
-static __always_inline bool context_tracking_in_user(void)
-{
-	return __this_cpu_read(context_tracking.state) == CONTEXT_USER;
-}
 #else
-static __always_inline bool context_tracking_in_user(void) { return false; }
 static __always_inline bool context_tracking_enabled(void) { return false; }
 static __always_inline bool context_tracking_enabled_cpu(int cpu) { return false; }
 static __always_inline bool context_tracking_enabled_this_cpu(void) { return false; }
-- 
2.31.1.189.g2e36527f23


  parent reply	other threads:[~2022-06-20 23:12 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-20 23:10 [PATCH rcu 0/23] RCU/context-tracking updates for v5.20 Paul E. McKenney
2022-06-20 23:10 ` [PATCH rcu 01/23] rcu: Dump rcuc kthread status for CPUs not reporting quiescent state Paul E. McKenney
2022-06-20 23:10 ` [PATCH rcu 02/23] rcu: Apply noinstr to rcu_idle_enter() and rcu_idle_exit() Paul E. McKenney
2022-06-20 23:10 ` Paul E. McKenney [this message]
2022-06-20 23:10 ` [PATCH rcu 04/23] context_tracking: Add a note about noinstr VS unsafe context tracking functions Paul E. McKenney
2022-06-20 23:10 ` [PATCH rcu 05/23] context_tracking: Rename __context_tracking_enter/exit() to __ct_user_enter/exit() Paul E. McKenney
2022-06-20 23:10 ` [PATCH rcu 06/23] context_tracking: Rename context_tracking_user_enter/exit() to user_enter/exit_callable() Paul E. McKenney
2022-06-20 23:10 ` [PATCH rcu 07/23] context_tracking: Rename context_tracking_enter/exit() to ct_user_enter/exit() Paul E. McKenney
2022-06-20 23:10 ` [PATCH rcu 08/23] context_tracking: Rename context_tracking_cpu_set() to ct_cpu_track_user() Paul E. McKenney
2022-06-20 23:10 ` [PATCH rcu 09/23] context_tracking: Split user tracking Kconfig Paul E. McKenney
2022-06-20 23:10 ` [PATCH rcu 10/23] context_tracking: Take idle eqs entrypoints over RCU Paul E. McKenney
2022-06-20 23:10 ` [PATCH rcu 11/23] context_tracking: Take IRQ " Paul E. McKenney
2022-06-20 23:10 ` [PATCH rcu 12/23] context_tracking: Take NMI " Paul E. McKenney
2022-06-20 23:10 ` [PATCH rcu 13/23] rcu/context-tracking: Remove rcu_irq_enter/exit() Paul E. McKenney
2022-06-20 23:10 ` [PATCH rcu 14/23] rcu/context_tracking: Move dynticks counter to context tracking Paul E. McKenney
2022-06-20 23:10 ` [PATCH rcu 15/23] rcu/context_tracking: Move dynticks_nesting " Paul E. McKenney
2022-06-20 23:10 ` [PATCH rcu 16/23] rcu/context_tracking: Move dynticks_nmi_nesting " Paul E. McKenney
2022-06-20 23:10 ` [PATCH rcu 17/23] rcu/context-tracking: Move deferred nocb resched " Paul E. McKenney
2022-06-20 23:10 ` [PATCH rcu 18/23] rcu/context-tracking: Move RCU-dynticks internal functions to context_tracking Paul E. McKenney
2022-06-20 23:10 ` [PATCH rcu 19/23] rcu/context-tracking: Remove unused and/or unecessary middle functions Paul E. McKenney
2022-06-20 23:10 ` [PATCH rcu 20/23] context_tracking: Convert state to atomic_t Paul E. McKenney
2022-06-20 23:10 ` [PATCH rcu 21/23] rcu/context_tracking: Merge dynticks counter and context tracking states Paul E. McKenney
2022-06-20 23:10 ` [PATCH rcu 22/23] MAINTAINERS: Add Paul as context tracking maintainer Paul E. McKenney
2022-06-20 23:10 ` [PATCH rcu 23/23] context_tracking: Interrupts always disabled for ct_idle_exit() Paul E. McKenney

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