diff mbox series

[v2,02/10] rcu: Make some rcu_watching_* functions global

Message ID 20241009125127.18902-3-neeraj.upadhyay@kernel.org (mailing list archive)
State New
Headers show
Series Make RCU Tasks scan idle tasks | expand

Commit Message

Neeraj Upadhyay Oct. 9, 2024, 12:51 p.m. UTC 
From: Neeraj Upadhyay <neeraj.upadhyay@kernel.org>

rcu_watching_snap_in_eqs() and rcu_watching_snap_stopped_since()
will be used in subsequent commits by RCU-tasks to check rcu_watching
state of idle tasks. So, make these functions global.

Signed-off-by: Neeraj Upadhyay <neeraj.upadhyay@kernel.org>
---
 kernel/rcu/rcu.h  | 4 ++++
 kernel/rcu/tree.c | 4 ++--
 2 files changed, 6 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/kernel/rcu/rcu.h b/kernel/rcu/rcu.h
index feb3ac1dc5d5..5fec1b52039c 100644
--- a/kernel/rcu/rcu.h
+++ b/kernel/rcu/rcu.h
@@ -609,6 +609,8 @@  void srcutorture_get_gp_data(struct srcu_struct *sp, int *flags,
 
 #ifdef CONFIG_TINY_RCU
 static inline bool rcu_watching_zero_in_eqs(int cpu, int *vp) { return false; }
+static inline bool rcu_watching_snap_in_eqs(int snap) { return false; }
+static inline bool rcu_watching_snap_stopped_since(int cpu, int snap) { return false; }
 static inline unsigned long rcu_get_gp_seq(void) { return 0; }
 static inline unsigned long rcu_exp_batches_completed(void) { return 0; }
 static inline unsigned long
@@ -622,6 +624,8 @@  static inline void rcu_gp_slow_register(atomic_t *rgssp) { }
 static inline void rcu_gp_slow_unregister(atomic_t *rgssp) { }
 #else /* #ifdef CONFIG_TINY_RCU */
 bool rcu_watching_zero_in_eqs(int cpu, int *vp);
+bool rcu_watching_snap_in_eqs(int snap);
+bool rcu_watching_snap_stopped_since(int cpu, int snap);
 unsigned long rcu_get_gp_seq(void);
 unsigned long rcu_exp_batches_completed(void);
 unsigned long srcu_batches_completed(struct srcu_struct *sp);
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index ea17dd2d0344..5ecbf85f157d 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -303,7 +303,7 @@  static void rcu_watching_online(void)
  * Return true if the snapshot returned from ct_rcu_watching()
  * indicates that RCU is in an extended quiescent state.
  */
-static bool rcu_watching_snap_in_eqs(int snap)
+bool rcu_watching_snap_in_eqs(int snap)
 {
 	return !(snap & CT_RCU_WATCHING);
 }
@@ -321,7 +321,7 @@  static bool rcu_watching_snap_in_eqs(int snap)
  *
  * This is meant to be used in a loop waiting for a CPU to go through an EQS.
  */
-static bool rcu_watching_snap_stopped_since(int cpu, int snap)
+bool rcu_watching_snap_stopped_since(int cpu, int snap)
 {
 	/*
 	 * The first failing snapshot is already ordered against the accesses