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rcu: Move rcu_ftrace_dump() from rcupdate.h to rcu.h 

The rcu_ftrace_dump() function is used only internally to RCU.  This
commit therefore moves its declaration from include/linux/rcupdate.h
to kernel/rcu/rcu.h.

Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
This commit is contained in:
Paul E. McKenney 2017-05-03 12:28:59 -07:00
parent 3d54f7983f
commit b8989b7605
2 changed files with 12 additions and 12 deletions
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12
include/linux/rcupdate.h
View File

@ -883,18 +883,6 @@ static inline void rcu_sysidle_force_exit(void) { }
#endif /* #else #ifdef CONFIG_NO_HZ_FULL_SYSIDLE */
/*
* Dump the ftrace buffer, but only one time per callsite per boot.
*/
#define rcu_ftrace_dump(oops_dump_mode) \
do { \
static atomic_t ___rfd_beenhere = ATOMIC_INIT(0); \
\
if (!atomic_read(&___rfd_beenhere) && \
!atomic_xchg(&___rfd_beenhere, 1)) \
ftrace_dump(oops_dump_mode); \
} while (0)
/*
* Place this after a lock-acquisition primitive to guarantee that
* an UNLOCK+LOCK pair acts as a full barrier. This guarantee applies

12
kernel/rcu/rcu.h
View File

@ -212,6 +212,18 @@ int rcu_jiffies_till_stall_check(void);
*/
#define TPS(x) tracepoint_string(x)
/*
* Dump the ftrace buffer, but only one time per callsite per boot.
*/
#define rcu_ftrace_dump(oops_dump_mode) \
do { \
static atomic_t ___rfd_beenhere = ATOMIC_INIT(0); \
\
if (!atomic_read(&___rfd_beenhere) && \
!atomic_xchg(&___rfd_beenhere, 1)) \
ftrace_dump(oops_dump_mode); \
} while (0)
void rcu_early_boot_tests(void);
void rcu_test_sync_prims(void);