Add kernel probes for supplementary subsystems

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

diff --git a/instrumentation/events/lttng-module/sock.h b/instrumentation/events/lttng-module/sock.h
new file mode 100644 (file)
index 0000000..246ea58
--- /dev/null
+++ b/instrumentation/events/lttng-module/sock.h
@@ -0,0 +1,68 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM sock
+
+#if !defined(_TRACE_SOCK_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_SOCK_H
+
+#include <net/sock.h>
+#include <linux/tracepoint.h>
+
+TRACE_EVENT(sock_rcvqueue_full,
+
+       TP_PROTO(struct sock *sk, struct sk_buff *skb),
+
+       TP_ARGS(sk, skb),
+
+       TP_STRUCT__entry(
+               __field(int, rmem_alloc)
+               __field(unsigned int, truesize)
+               __field(int, sk_rcvbuf)
+       ),
+
+       TP_fast_assign(
+               tp_assign(rmem_alloc, atomic_read(&sk->sk_rmem_alloc));
+               tp_assign(truesize, skb->truesize);
+               tp_assign(sk_rcvbuf, sk->sk_rcvbuf);
+       ),
+
+       TP_printk("rmem_alloc=%d truesize=%u sk_rcvbuf=%d",
+               __entry->rmem_alloc, __entry->truesize, __entry->sk_rcvbuf)
+)
+
+TRACE_EVENT(sock_exceed_buf_limit,
+
+       TP_PROTO(struct sock *sk, struct proto *prot, long allocated),
+
+       TP_ARGS(sk, prot, allocated),
+
+       TP_STRUCT__entry(
+               __string(name, prot->name)
+               __field(long *, sysctl_mem)
+               __field(long, allocated)
+               __field(int, sysctl_rmem)
+               __field(int, rmem_alloc)
+       ),
+
+       TP_fast_assign(
+               tp_strcpy(name, prot->name);
+               tp_assign(sysctl_mem, prot->sysctl_mem);
+               tp_assign(allocated, allocated);
+               tp_assign(sysctl_rmem, prot->sysctl_rmem[0]);
+               tp_assign(rmem_alloc, atomic_read(&sk->sk_rmem_alloc));
+       ),
+
+       TP_printk("proto:%s sysctl_mem=%ld,%ld,%ld allocated=%ld "
+               "sysctl_rmem=%d rmem_alloc=%d",
+               __entry->name,
+               __entry->sysctl_mem[0],
+               __entry->sysctl_mem[1],
+               __entry->sysctl_mem[2],
+               __entry->allocated,
+               __entry->sysctl_rmem,
+               __entry->rmem_alloc)
+)
+
+#endif /* _TRACE_SOCK_H */
+
+/* This part must be outside protection */
+#include "../../../probes/define_trace.h"