[RFC PATCH 1/3] srcu: Declare exported symbols before including srcu{tiny,tree}.h

[Sean Christopherson]

Move the declarations of call_srcu(), cleanup_srcu_struct(), and
synchronize_srcu() above the inclusion of the implementation specific SRCU
header so that tiny SRCU can provide inline wrappers, e.g. for expedited
versions, without needing to re-declare synchronize_srcu() and call_srcu().

Opportunsitically use rcu_callback_t in the call_srcu() declaration instead
of an open coded equivalent (all implementations already use
rcu_callback_t).

No functional change intended.

Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx>
---
 include/linux/srcu.h     | 10 +++++-----
 include/linux/srcutiny.h |  2 --
 2 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/include/linux/srcu.h b/include/linux/srcu.h
index bb44a0bd7696..1cbc37e3b59c 100644
--- a/include/linux/srcu.h
+++ b/include/linux/srcu.h
@@ -79,6 +79,11 @@ int init_srcu_struct_fast_updown(struct srcu_struct *ssp);
 						// instead of smp_mb().
 void __srcu_read_unlock(struct srcu_struct *ssp, int idx) __releases_shared(ssp);
 
+void call_srcu(struct srcu_struct *ssp, struct rcu_head *head,
+	       rcu_callback_t func);
+void cleanup_srcu_struct(struct srcu_struct *ssp);
+void synchronize_srcu(struct srcu_struct *ssp);
+
 #ifdef CONFIG_TINY_SRCU
 #include <linux/srcutiny.h>
 #elif defined(CONFIG_TREE_SRCU)
@@ -87,11 +92,6 @@ void __srcu_read_unlock(struct srcu_struct *ssp, int idx) __releases_shared(ssp)
 #error "Unknown SRCU implementation specified to kernel configuration"
 #endif
 
-void call_srcu(struct srcu_struct *ssp, struct rcu_head *head,
-		void (*func)(struct rcu_head *head));
-void cleanup_srcu_struct(struct srcu_struct *ssp);
-void synchronize_srcu(struct srcu_struct *ssp);
-
 #define SRCU_GET_STATE_COMPLETED 0x1
 
 /**
diff --git a/include/linux/srcutiny.h b/include/linux/srcutiny.h
index dec7cbe015aa..4976536e8b28 100644
--- a/include/linux/srcutiny.h
+++ b/include/linux/srcutiny.h
@@ -64,8 +64,6 @@ struct srcu_usage { };
 #define init_srcu_struct_fast_updown init_srcu_struct
 #endif // #ifndef CONFIG_DEBUG_LOCK_ALLOC
 
-void synchronize_srcu(struct srcu_struct *ssp);
-
 /*
  * Counts the new reader in the appropriate per-CPU element of the
  * srcu_struct.  Can be invoked from irq/bh handlers, but the matching
-- 
2.53.0.473.g4a7958ca14-goog