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authorChuck Lever <chuck.lever@oracle.com>2018-03-27 10:51:39 -0400
committerJ. Bruce Fields <bfields@redhat.com>2018-04-03 15:08:12 -0400
commitaaba72cd4e793fbf1c04e06dee3d2c3710339678 (patch)
tree07c10dd49ba18ca0cee58d1a96d27505d53f1378 /include/trace
parent0b9547bf6b94317b3f8e2496dc2b44cb6e599b01 (diff)
sunrpc: Report per-RPC execution stats
Introduce a mechanism to report the server-side execution latency of each RPC. The goal is to enable user space to filter the trace record for latency outliers, build histograms, etc. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'include/trace')
-rw-r--r--include/trace/events/sunrpc.h21
1 files changed, 21 insertions, 0 deletions
diff --git a/include/trace/events/sunrpc.h b/include/trace/events/sunrpc.h
index 5a8157c04900..1b383f71ccd7 100644
--- a/include/trace/events/sunrpc.h
+++ b/include/trace/events/sunrpc.h
@@ -705,6 +705,27 @@ TRACE_EVENT(svc_handle_xprt,
__entry->len, show_svc_xprt_flags(__entry->flags))
);
+TRACE_EVENT(svc_stats_latency,
+ TP_PROTO(const struct svc_rqst *rqst),
+
+ TP_ARGS(rqst),
+
+ TP_STRUCT__entry(
+ __field(u32, xid)
+ __field(unsigned long, execute)
+ __string(addr, rqst->rq_xprt->xpt_remotebuf)
+ ),
+
+ TP_fast_assign(
+ __entry->xid = be32_to_cpu(rqst->rq_xid);
+ __entry->execute = ktime_to_us(ktime_sub(ktime_get(),
+ rqst->rq_stime));
+ __assign_str(addr, rqst->rq_xprt->xpt_remotebuf);
+ ),
+
+ TP_printk("addr=%s xid=0x%08x execute-us=%lu",
+ __get_str(addr), __entry->xid, __entry->execute)
+);
DECLARE_EVENT_CLASS(svc_deferred_event,
TP_PROTO(struct svc_deferred_req *dr),