From e67198cc05b8ecbb7b8e2d8ef9fb5c8d26821873 Mon Sep 17 00:00:00 2001
From: Frederic Weisbecker <frederic@kernel.org>
Date: Wed, 8 Jun 2022 16:40:25 +0200
Subject: context_tracking: Take idle eqs entrypoints over RCU

The RCU dynticks counter is going to be merged into the context tracking
subsystem. Start with moving the idle extended quiescent states
entrypoints to context tracking. For now those are dumb redirections to
existing RCU calls.

[ paulmck: Apply kernel test robot feedback. ]

Signed-off-by: Frederic Weisbecker <frederic@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: Paul E. McKenney <paulmck@kernel.org>
Reviewed-by: Nicolas Saenz Julienne <nsaenzju@redhat.com>
Tested-by: Nicolas Saenz Julienne <nsaenzju@redhat.com>
---
 kernel/context_tracking.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'kernel/context_tracking.c')

diff --git a/kernel/context_tracking.c b/kernel/context_tracking.c
index f3dec1be2bf6..c0b3798d4e94 100644
--- a/kernel/context_tracking.c
+++ b/kernel/context_tracking.c
@@ -22,6 +22,21 @@
 #include <linux/export.h>
 #include <linux/kprobes.h>
 
+
+#ifdef CONFIG_CONTEXT_TRACKING_IDLE
+noinstr void ct_idle_enter(void)
+{
+	rcu_idle_enter();
+}
+EXPORT_SYMBOL_GPL(ct_idle_enter);
+
+void ct_idle_exit(void)
+{
+	rcu_idle_exit();
+}
+EXPORT_SYMBOL_GPL(ct_idle_exit);
+#endif /* #ifdef CONFIG_CONTEXT_TRACKING_IDLE */
+
 #ifdef CONFIG_CONTEXT_TRACKING_USER
 
 #define CREATE_TRACE_POINTS
-- 
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