Fix: update signal instrumentation for 3.4 kernel

Fix #226

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

diff --git a/instrumentation/events/lttng-module/signal.h b/instrumentation/events/lttng-module/signal.h
index f963c807f14f914f2a6ce552940e12f906f376f5..c3529f973d6beb1870b45db15ff6f6d36630e3a0 100644 (file)
--- a/instrumentation/events/lttng-module/signal.h
+++ b/instrumentation/events/lttng-module/signal.h
@@ -5,6 +5,7 @@
 #define _TRACE_SIGNAL_H
 
 #include <linux/tracepoint.h>
+#include <linux/version.h>
 
 #ifndef _TRACE_SIGNAL_DEF
 #define _TRACE_SIGNAL_DEF
@@ -34,6 +35,7 @@
  * SEND_SIG_NOINFO means that si_code is SI_USER, and SEND_SIG_PRIV
  * means that si_code is SI_KERNEL.
  */
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,4,0))
 TRACE_EVENT(signal_generate,
 
        TP_PROTO(int sig, struct siginfo *info, struct task_struct *task),
@@ -59,6 +61,39 @@ TRACE_EVENT(signal_generate,
                  __entry->sig, __entry->errno, __entry->code,
                  __entry->comm, __entry->pid)
 )
+#else
+TRACE_EVENT(signal_generate,
+
+       TP_PROTO(int sig, struct siginfo *info, struct task_struct *task,
+                       int group, int result),
+
+       TP_ARGS(sig, info, task, group, result),
+
+       TP_STRUCT__entry(
+               __field(        int,    sig                     )
+               __field(        int,    errno                   )
+               __field(        int,    code                    )
+               __array(        char,   comm,   TASK_COMM_LEN   )
+               __field(        pid_t,  pid                     )
+               __field(        int,    group                   )
+               __field(        int,    result                  )
+       ),
+
+       TP_fast_assign(
+               tp_assign(sig, sig)
+               TP_STORE_SIGINFO(info)
+               tp_memcpy(comm, task->comm, TASK_COMM_LEN)
+               tp_assign(pid, task->pid)
+               tp_assign(group, group)
+               tp_assign(result, result)
+       ),
+
+       TP_printk("sig=%d errno=%d code=%d comm=%s pid=%d grp=%d res=%d",
+                 __entry->sig, __entry->errno, __entry->code,
+                 __entry->comm, __entry->pid, __entry->group,
+                 __entry->result)
+)
+#endif
 
 /**
  * signal_deliver - called when a signal is delivered