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sunrpc: add rpc_count_iostats_idx 

Add a call to tally stats for a task under a different statsidx than
what's contained in the task structure.

This is needed to properly account for pnfs reads/writes when the
DS nfs version != the MDS version.

Signed-off-by: Weston Andros Adamson <dros@primarydata.com>
Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com>
This commit is contained in:
Weston Andros Adamson 2014-06-24 10:59:52 -04:00 committed by Tom Haynes
parent 16cecdf620
commit 840210fc48
2 changed files with 21 additions and 7 deletions
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2
include/linux/sunrpc/metrics.h
View File

@ -79,6 +79,8 @@ struct rpc_clnt;
struct rpc_iostats * rpc_alloc_iostats(struct rpc_clnt *);
void rpc_count_iostats(const struct rpc_task *,
struct rpc_iostats *);
void rpc_count_iostats_metrics(const struct rpc_task *,
struct rpc_iostats *);
void rpc_print_iostats(struct seq_file *, struct rpc_clnt *);
void rpc_free_iostats(struct rpc_iostats *);

26
net/sunrpc/stats.c
View File

@ -140,22 +140,20 @@ void rpc_free_iostats(struct rpc_iostats *stats)
EXPORT_SYMBOL_GPL(rpc_free_iostats);
/**
* rpc_count_iostats - tally up per-task stats
* rpc_count_iostats_metrics - tally up per-task stats
* @task: completed rpc_task
* @stats: array of stat structures
* @op_metrics: stat structure for OP that will accumulate stats from @task
*/
void rpc_count_iostats(const struct rpc_task *task, struct rpc_iostats *stats)
void rpc_count_iostats_metrics(const struct rpc_task *task,
struct rpc_iostats *op_metrics)
{
struct rpc_rqst *req = task->tk_rqstp;
struct rpc_iostats *op_metrics;
ktime_t delta, now;
if (!stats || !req)
if (!op_metrics || !req)
return;
now = ktime_get();
op_metrics = &stats[task->tk_msg.rpc_proc->p_statidx];
spin_lock(&op_metrics->om_lock);
op_metrics->om_ops++;
@ -175,6 +173,20 @@ void rpc_count_iostats(const struct rpc_task *task, struct rpc_iostats *stats)
spin_unlock(&op_metrics->om_lock);
}
EXPORT_SYMBOL_GPL(rpc_count_iostats_metrics);
/**
* rpc_count_iostats - tally up per-task stats
* @task: completed rpc_task
* @stats: array of stat structures
*
* Uses the statidx from @task
*/
void rpc_count_iostats(const struct rpc_task *task, struct rpc_iostats *stats)
{
rpc_count_iostats_metrics(task,
&stats[task->tk_msg.rpc_proc->p_statidx]);
}
EXPORT_SYMBOL_GPL(rpc_count_iostats);
static void _print_name(struct seq_file *seq, unsigned int op,