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sunrpc: Re-purpose trace_svc_process

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Currently, trace_svc_process has two call sites:

1. Just after a call to svc_send. svc_send already invokes
   trace_svc_send with the same arguments just before returning

2. Just before a call to svc_drop. svc_drop already invokes
   trace_svc_drop with the same arguments just after it is called

Therefore trace_svc_process does not provide any additional
information not already provided by these other trace points.

However, it would be useful to record the incoming RPC procedure.
So reuse trace_svc_process for this purpose.

Signed-off-by: Chuck Lever <[email protected]>
Signed-off-by: J. Bruce Fields <[email protected]>
This commit is contained in:
Chuck Lever 2018-03-27 10:51:22 -04:00 • committed by J. Bruce Fields
commit 0b9547bf6b
2 changed files with 29 additions and 10 deletions
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9
net/sunrpc/svc.c
View file

@ -1255,6 +1255,7 @@ svc_process_common(struct svc_rqst *rqstp, struct kvec *argv, struct kvec *resv)
/* Syntactic check complete */
serv->sv_stats->rpccnt++;
trace_svc_process(rqstp, progp->pg_name);
/* Build the reply header. */
statp = resv->iov_base +resv->iov_len;
@ -1431,14 +1432,10 @@ svc_process(struct svc_rqst *rqstp)
}
/* Returns 1 for send, 0 for drop */
if (likely(svc_process_common(rqstp, argv, resv))) {
int ret = svc_send(rqstp);
if (likely(svc_process_common(rqstp, argv, resv)))
return svc_send(rqstp);
trace_svc_process(rqstp, ret);
return ret;
}
out_drop:
trace_svc_process(rqstp, 0);
svc_drop(rqstp);
return 0;
}