sunrpc: introduce lttng_get_clid helper

[lttng-modules.git] / instrumentation / events / lttng-module / rpc.h

diff --git a/instrumentation/events/lttng-module/rpc.h b/instrumentation/events/lttng-module/rpc.h
index 2d06e5578c968551079af19db196f42a2ba2cd09..ceaf9dbf4089f6b00c1ebf3ace7b5eedd374330f 100644 (file)
--- a/instrumentation/events/lttng-module/rpc.h
+++ b/instrumentation/events/lttng-module/rpc.h
@@ -9,6 +9,29 @@
 #include <linux/sunrpc/sched.h>
 #include <linux/sunrpc/clnt.h>
 
+#ifndef ONCE_LTTNG_RPC_H
+#define ONCE_LTTNG_RPC_H
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
+static inline
+int lttng_get_clid(const struct rpc_task *task)
+{
+       struct rpc_clnt *tk_client;
+
+       tk_client = task->tk_client;
+       if (!tk_client)
+               return -1;
+       /*
+        * The cl_clid field is always initialized to positive signed
+        * integers. Negative signed integer values are treated as
+        * errors.
+        */
+       return (int) tk_client->cl_clid;
+}
+#endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
+
+#endif /* ONCE_LTTNG_RPC_H */
+
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,0,0))
 LTTNG_TRACEPOINT_EVENT_CLASS(rpc_task_status,
 
@@ -18,7 +41,7 @@ LTTNG_TRACEPOINT_EVENT_CLASS(rpc_task_status,
 
        TP_FIELDS(
                ctf_integer(unsigned int, task_id, task->tk_pid)
-               ctf_integer(int, client_id, task->tk_client->cl_clid)
+               ctf_integer(int, client_id, lttng_get_clid(task))
                ctf_integer(int, status, task->tk_status)
        )
 )
@@ -43,7 +66,7 @@ LTTNG_TRACEPOINT_EVENT_CLASS(rpc_task_status,
 
        TP_FIELDS(
                ctf_integer(unsigned int, task_id, task->tk_pid)
-               ctf_integer(int, client_id, task->tk_client->cl_clid)
+               ctf_integer(int, client_id, lttng_get_clid(task))
                ctf_integer(int, status, task->tk_status)
        )
 )
@@ -100,7 +123,7 @@ LTTNG_TRACEPOINT_EVENT(rpc_connect_status,
 
        TP_FIELDS(
                ctf_integer(unsigned int, task_id, task->tk_pid)
-               ctf_integer(int, client_id, task->tk_client->cl_clid)
+               ctf_integer(int, client_id, lttng_get_clid(task))
                ctf_integer(int, status, task->tk_status)
        )
 )
@@ -112,7 +135,7 @@ LTTNG_TRACEPOINT_EVENT(rpc_connect_status,
 
        TP_FIELDS(
                ctf_integer(unsigned int, task_id, task->tk_pid)
-               ctf_integer(int, client_id, task->tk_client->cl_clid)
+               ctf_integer(int, client_id, lttng_get_clid(task))
                ctf_integer(int, status, status)
        )
 )
@@ -139,8 +162,7 @@ LTTNG_TRACEPOINT_EVENT_CLASS(rpc_task_running,
 
        TP_FIELDS(
                ctf_integer(unsigned int, task_id, task->tk_pid)
-               ctf_integer(int, client_id, task->tk_client ?
-                       task->tk_client->cl_clid : -1)
+               ctf_integer(int, client_id, lttng_get_clid(task))
                ctf_integer_hex(const void *, action, action)
                ctf_integer(unsigned long, runstate, task->tk_runstate)
                ctf_integer(int, status, task->tk_status)
@@ -177,8 +199,7 @@ LTTNG_TRACEPOINT_EVENT_CLASS(rpc_task_queued,
 
        TP_FIELDS(
                ctf_integer(unsigned int, task_id, task->tk_pid)
-               ctf_integer(int, client_id, task->tk_client ?
-                               task->tk_client->cl_clid : -1)
+               ctf_integer(int, client_id, lttng_get_clid(task))
                ctf_integer(unsigned long, timeout, task->tk_timeout)
                ctf_integer(unsigned long, runstate, task->tk_runstate)
                ctf_integer(int, status, task->tk_status)
@@ -210,8 +231,7 @@ LTTNG_TRACEPOINT_EVENT_CLASS(rpc_task_running,
 
        TP_FIELDS(
                ctf_integer(unsigned int, task_id, task->tk_pid)
-               ctf_integer(int, client_id, task->tk_client ?
-                       task->tk_client->cl_clid : -1)
+               ctf_integer(int, client_id, lttng_get_clid(task))
                ctf_integer_hex(const void *, action, action)
                ctf_integer(unsigned long, runstate, task->tk_runstate)
                ctf_integer(int, status, task->tk_status)
@@ -248,8 +268,7 @@ LTTNG_TRACEPOINT_EVENT_CLASS(rpc_task_queued,
 
        TP_FIELDS(
                ctf_integer(unsigned int, task_id, task->tk_pid)
-               ctf_integer(int, client_id, task->tk_client ?
-                       task->tk_client->cl_clid : -1)
+               ctf_integer(int, client_id, lttng_get_clid(task))
                ctf_integer(unsigned long, timeout, task->tk_timeout)
                ctf_integer(unsigned long, runstate, task->tk_runstate)
                ctf_integer(int, status, task->tk_status)