SUNRPC: Add a tracepoint for server socket out-of-space conditions
Add a tracepoint to track when the processing of incoming RPC data gets deferred due to out-of-space issues on the outgoing transport. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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@ -553,7 +553,7 @@ TRACE_EVENT(svc_xprt_do_enqueue,
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__entry->pid, show_svc_xprt_flags(__entry->flags))
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);
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TRACE_EVENT(svc_xprt_dequeue,
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DECLARE_EVENT_CLASS(svc_xprt_event,
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TP_PROTO(struct svc_xprt *xprt),
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TP_ARGS(xprt),
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@ -582,6 +582,14 @@ TRACE_EVENT(svc_xprt_dequeue,
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show_svc_xprt_flags(__entry->flags))
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);
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DEFINE_EVENT(svc_xprt_event, svc_xprt_dequeue,
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TP_PROTO(struct svc_xprt *xprt),
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TP_ARGS(xprt));
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DEFINE_EVENT(svc_xprt_event, svc_xprt_no_write_space,
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TP_PROTO(struct svc_xprt *xprt),
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TP_ARGS(xprt));
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TRACE_EVENT(svc_wake_up,
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TP_PROTO(int pid),
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@ -333,8 +333,12 @@ static bool svc_xprt_has_something_to_do(struct svc_xprt *xprt)
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{
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if (xprt->xpt_flags & ((1<<XPT_CONN)|(1<<XPT_CLOSE)))
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return true;
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if (xprt->xpt_flags & ((1<<XPT_DATA)|(1<<XPT_DEFERRED)))
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return xprt->xpt_ops->xpo_has_wspace(xprt);
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if (xprt->xpt_flags & ((1<<XPT_DATA)|(1<<XPT_DEFERRED))) {
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if (xprt->xpt_ops->xpo_has_wspace(xprt))
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return true;
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trace_svc_xprt_no_write_space(xprt);
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return false;
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}
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return false;
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}
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