Implement state dump

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

diff --git a/instrumentation/events/lttng-module/lttng-statedump.h b/instrumentation/events/lttng-module/lttng-statedump.h
new file mode 100644 (file)
index 0000000..5041188
--- /dev/null
+++ b/instrumentation/events/lttng-module/lttng-statedump.h
@@ -0,0 +1,167 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM lttng_statedump
+
+#if !defined(_TRACE_LTTNG_STATEDUMP_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_LTTNG_STATEDUMP_H
+
+#include <linux/tracepoint.h>
+#include <linux/netlink.h>
+#include <linux/inet.h>
+#include <linux/ip.h>
+#include <linux/netdevice.h>
+#include <linux/inetdevice.h>
+
+TRACE_EVENT(lttng_statedump_start,
+       TP_PROTO(struct lttng_session *session),
+       TP_ARGS(session),
+       TP_STRUCT__entry(
+       ),
+       TP_fast_assign(
+       ),
+       TP_printk("")
+)
+
+TRACE_EVENT(lttng_statedump_end,
+       TP_PROTO(struct lttng_session *session),
+       TP_ARGS(session),
+       TP_STRUCT__entry(
+       ),
+       TP_fast_assign(
+       ),
+       TP_printk("")
+)
+
+TRACE_EVENT(lttng_statedump_process_state,
+       TP_PROTO(struct lttng_session *session,
+               struct task_struct *p,
+               int type, int mode, int submode, int status),
+       TP_ARGS(session, p, type, mode, submode, status),
+       TP_STRUCT__entry(
+               __field(pid_t, tid)
+               __field(pid_t, vtid)
+               __field(pid_t, pid)
+               __field(pid_t, vpid)
+               __field(pid_t, ppid)
+               __field(pid_t, vppid)
+               __array_text(char, name, TASK_COMM_LEN)
+               __field(int, type)
+               __field(int, mode)
+               __field(int, submode)
+               __field(int, status)
+       ),
+       TP_fast_assign(
+               tp_assign(tid, p->pid)
+               tp_assign(vtid, !p->nsproxy ? 0 : task_pid_vnr(p))
+               tp_assign(pid, p->tgid)
+               tp_assign(vpid, !p->nsproxy ? 0 : task_tgid_vnr(p))
+               tp_assign(ppid,
+                       ({
+                               pid_t ret;
+
+                               rcu_read_lock();
+                               ret = task_tgid_nr(p->real_parent);
+                               rcu_read_unlock();
+                               ret;
+                       }))
+               tp_assign(vppid,
+                       ({
+                               struct task_struct *parent;
+                               pid_t ret;
+
+                               rcu_read_lock();
+                               parent = rcu_dereference(current->real_parent);
+                               if (!parent->nsproxy)
+                                       ret = 0;
+                               else
+                                       ret = task_tgid_nr(parent);
+                               rcu_read_unlock();
+                               ret;
+                       }))
+               tp_memcpy(name, p->comm, TASK_COMM_LEN)
+               tp_assign(type, type)
+               tp_assign(mode, mode)
+               tp_assign(submode, submode)
+               tp_assign(status, status)
+       ),
+       TP_printk("")
+)
+
+TRACE_EVENT(lttng_statedump_file_descriptor,
+       TP_PROTO(struct lttng_session *session,
+               struct task_struct *p, int fd, const char *filename),
+       TP_ARGS(session, p, fd, filename),
+       TP_STRUCT__entry(
+               __field(pid_t, pid)
+               __field(int, fd)
+               __string(filename, filename)
+       ),
+       TP_fast_assign(
+               tp_assign(pid, p->tgid)
+               tp_assign(fd, p->tgid)
+               tp_strcpy(filename, filename)
+       ),
+       TP_printk("")
+)
+
+TRACE_EVENT(lttng_statedump_vm_map,
+       TP_PROTO(struct lttng_session *session,
+               struct task_struct *p, struct vm_area_struct *map,
+               unsigned long inode),
+       TP_ARGS(session, p, map, inode),
+       TP_STRUCT__entry(
+               __field(pid_t, pid)
+               __field_hex(unsigned long, start)
+               __field_hex(unsigned long, end)
+               __field_hex(unsigned long, flags)
+               __field(unsigned long, inode)
+               __field(unsigned long, pgoff)
+       ),
+       TP_fast_assign(
+               tp_assign(pid, p->tgid)
+               tp_assign(start, map->vm_start)
+               tp_assign(end, map->vm_end)
+               tp_assign(flags, map->vm_flags)
+               tp_assign(inode, inode)
+               tp_assign(pgoff, map->vm_pgoff << PAGE_SHIFT)
+       ),
+       TP_printk("")
+)
+
+TRACE_EVENT(lttng_statedump_network_interface,
+       TP_PROTO(struct lttng_session *session,
+               struct net_device *dev, struct in_ifaddr *ifa),
+       TP_ARGS(session, dev, ifa),
+       TP_STRUCT__entry(
+               __string(name, dev->name)
+               __field_network_hex(uint32_t, address_ipv4)
+       ),
+       TP_fast_assign(
+               tp_strcpy(name, dev->name)
+               tp_assign(address_ipv4, ifa ? ifa->ifa_address : 0U)
+       ),
+       TP_printk("")
+)
+
+/* Called with desc->lock held */
+TRACE_EVENT(lttng_statedump_interrupt,
+       TP_PROTO(struct lttng_session *session,
+               unsigned int irq, const char *chip_name,
+               struct irqaction *action),
+       TP_ARGS(session, irq, chip_name, action),
+       TP_STRUCT__entry(
+               __field(unsigned int, irq)
+               __string(name, chip_name)
+               __string(action, action->name)
+       ),
+       TP_fast_assign(
+               tp_assign(irq, irq)
+               tp_strcpy(name, chip_name)
+               tp_strcpy(action, action->name)
+       ),
+       TP_printk("")
+)
+
+#endif /*  _TRACE_LTTNG_STATEDUMP_H */
+
+/* This part must be outside protection */
+#include "../../../probes/define_trace.h"