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Commit 99098751 authored by Paul E. McKenney's avatar Paul E. McKenney
Browse files

rcu: Move rcu_head definition to types.h 



Take a first step towards untangling Linux kernel header files by
placing the struct rcu_head definition into include/linux/types.h
and including include/linux/types.h in include/linux/rcupdate.h
where struct rcu_head used to be defined.  The actual inclusion point
for include/linux/types.h is with the rest of the #include directives
rather than at the point where struct rcu_head used to be defined,
as suggested by Mathieu Desnoyers.

Once this is in place, then header files that need only rcu_head
can include types.h rather than rcupdate.h.

Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Acked-by: default avatarMathieu Desnoyers <mathieu.desnoyers@efficios.com>
parent b3fbab05

include/linux/rcupdate.h

+1 −10
Original line number Diff line number Diff line
@@ -33,6 +33,7 @@ 
#ifndef __LINUX_RCUPDATE_H

#define __LINUX_RCUPDATE_H



#include <linux/types.h>

#include <linux/cache.h>

#include <linux/spinlock.h>

#include <linux/threads.h>
@@ -64,16 +65,6 @@ static inline void rcutorture_record_progress(unsigned long vernum) 
#define ULONG_CMP_GE(a, b)	(ULONG_MAX / 2 >= (a) - (b))

#define ULONG_CMP_LT(a, b)	(ULONG_MAX / 2 < (a) - (b))



/**

 * struct rcu_head - callback structure for use with RCU

 * @next: next update requests in a list

 * @func: actual update function to call after the grace period.

 */

struct rcu_head {

	struct rcu_head *next;

	void (*func)(struct rcu_head *head);

};



/* Exported common interfaces */

extern void call_rcu_sched(struct rcu_head *head,

			   void (*func)(struct rcu_head *rcu));

include/linux/types.h

+10 −0
Original line number Diff line number Diff line
@@ -238,6 +238,16 @@ struct ustat { 
	char			f_fpack[6];

};



/**

 * struct rcu_head - callback structure for use with RCU

 * @next: next update requests in a list

 * @func: actual update function to call after the grace period.

 */

struct rcu_head {

	struct rcu_head *next;

	void (*func)(struct rcu_head *head);

};



#endif	/* __KERNEL__ */

#endif /*  __ASSEMBLY__ */

#endif /* _LINUX_TYPES_H */