xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

sunrpc: Report per-RPC execution stats

Browse Source 
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>
This commit is contained in:
Chuck Lever
2018-03-27 10:51:39 -04:00
committed by J. Bruce Fields
parent 0b9547bf6b
commit aaba72cd4e
3 changed files with 24 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
include/trace/events/sunrpc.h
View File

@@ -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),