diff options
| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-02-09 04:01:15 +0100 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-02-15 06:19:51 +0100 |
| commit | 2f09c24216cd789653eb8efbf8be88409eb8d581 (patch) | |
| tree | 8ad3049b8303e4537f03ce3c11abdad468cd0803 | |
| parent | NFSv4: Further reduce the footprint of the idmapper (diff) | |
| download | linux-2f09c24216cd789653eb8efbf8be88409eb8d581.tar.xz linux-2f09c24216cd789653eb8efbf8be88409eb8d581.zip | |
SUNRPC: Ensure that we can trace waitqueues when !defined(CONFIG_SYSCTL)
The tracepoint code relies on the queue->name being defined in order to
be able to display the name of the waitqueue on which an RPC task is
sleeping.
Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Reported-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
| -rw-r--r-- | include/linux/sunrpc/debug.h | 3 | ||||
| -rw-r--r-- | include/linux/sunrpc/sched.h | 15 | ||||
| -rw-r--r-- | net/sunrpc/sched.c | 4 |
3 files changed, 17 insertions, 5 deletions
diff --git a/include/linux/sunrpc/debug.h b/include/linux/sunrpc/debug.h index c2786f20016f..2a11eb278f64 100644 --- a/include/linux/sunrpc/debug.h +++ b/include/linux/sunrpc/debug.h @@ -34,6 +34,9 @@ #ifdef CONFIG_SYSCTL #define RPC_DEBUG #endif +#ifdef CONFIG_TRACEPOINTS +#define RPC_TRACEPOINTS +#endif /* #define RPC_PROFILE */ /* diff --git a/include/linux/sunrpc/sched.h b/include/linux/sunrpc/sched.h index f7b2df5252b0..22dfc24013b6 100644 --- a/include/linux/sunrpc/sched.h +++ b/include/linux/sunrpc/sched.h @@ -195,7 +195,7 @@ struct rpc_wait_queue { unsigned char nr; /* # tasks remaining for cookie */ unsigned short qlen; /* total # tasks waiting in queue */ struct rpc_timer timer_list; -#ifdef RPC_DEBUG +#if defined(RPC_DEBUG) || defined(RPC_TRACEPOINTS) const char * name; #endif }; @@ -270,11 +270,22 @@ static inline int rpc_task_has_priority(struct rpc_task *task, unsigned char pri return (task->tk_priority + RPC_PRIORITY_LOW == prio); } -#ifdef RPC_DEBUG +#if defined(RPC_DEBUG) || defined (RPC_TRACEPOINTS) static inline const char * rpc_qname(const struct rpc_wait_queue *q) { return ((q && q->name) ? q->name : "unknown"); } + +static inline void rpc_assign_waitqueue_name(struct rpc_wait_queue *q, + const char *name) +{ + q->name = name; +} +#else +static inline void rpc_assign_waitqueue_name(struct rpc_wait_queue *q, + const char *name) +{ +} #endif #endif /* _LINUX_SUNRPC_SCHED_H_ */ diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c index d79c63df49b8..1c570a81096a 100644 --- a/net/sunrpc/sched.c +++ b/net/sunrpc/sched.c @@ -208,9 +208,7 @@ static void __rpc_init_priority_wait_queue(struct rpc_wait_queue *queue, const c queue->qlen = 0; setup_timer(&queue->timer_list.timer, __rpc_queue_timer_fn, (unsigned long)queue); INIT_LIST_HEAD(&queue->timer_list.list); -#ifdef RPC_DEBUG - queue->name = qname; -#endif + rpc_assign_waitqueue_name(queue, qname); } void rpc_init_priority_wait_queue(struct rpc_wait_queue *queue, const char *qname) |