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Subject[PATCH 3/4] tracing: add schedule events to event trace
From: Steven Rostedt <srostedt@redhat.com>

This patch changes the trace/sched.h to use the DECLARE_TRACE_FMT
such that they are automatically registered with the event tracer.

And it also adds the tracing sched headers to kernel/trace/events.c

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
---
include/trace/sched.h | 49 +------------------------
include/trace/sched_event_types.h | 72 +++++++++++++++++++++++++++++++++++++
kernel/trace/Makefile | 1 +
kernel/trace/events.c | 13 +++++++
4 files changed, 87 insertions(+), 48 deletions(-)
create mode 100644 include/trace/sched_event_types.h
create mode 100644 kernel/trace/events.c
diff --git a/include/trace/sched.h b/include/trace/sched.h
index 0d81098..4e372a1 100644
--- a/include/trace/sched.h
+++ b/include/trace/sched.h
@@ -4,53 +4,6 @@
#include <linux/sched.h>
#include <linux/tracepoint.h>

-DECLARE_TRACE(sched_kthread_stop,
- TPPROTO(struct task_struct *t),
- TPARGS(t));
-
-DECLARE_TRACE(sched_kthread_stop_ret,
- TPPROTO(int ret),
- TPARGS(ret));
-
-DECLARE_TRACE(sched_wait_task,
- TPPROTO(struct rq *rq, struct task_struct *p),
- TPARGS(rq, p));
-
-DECLARE_TRACE(sched_wakeup,
- TPPROTO(struct rq *rq, struct task_struct *p, int success),
- TPARGS(rq, p, success));
-
-DECLARE_TRACE(sched_wakeup_new,
- TPPROTO(struct rq *rq, struct task_struct *p, int success),
- TPARGS(rq, p, success));
-
-DECLARE_TRACE(sched_switch,
- TPPROTO(struct rq *rq, struct task_struct *prev,
- struct task_struct *next),
- TPARGS(rq, prev, next));
-
-DECLARE_TRACE(sched_migrate_task,
- TPPROTO(struct task_struct *p, int orig_cpu, int dest_cpu),
- TPARGS(p, orig_cpu, dest_cpu));
-
-DECLARE_TRACE(sched_process_free,
- TPPROTO(struct task_struct *p),
- TPARGS(p));
-
-DECLARE_TRACE(sched_process_exit,
- TPPROTO(struct task_struct *p),
- TPARGS(p));
-
-DECLARE_TRACE(sched_process_wait,
- TPPROTO(struct pid *pid),
- TPARGS(pid));
-
-DECLARE_TRACE(sched_process_fork,
- TPPROTO(struct task_struct *parent, struct task_struct *child),
- TPARGS(parent, child));
-
-DECLARE_TRACE(sched_signal_send,
- TPPROTO(int sig, struct task_struct *p),
- TPARGS(sig, p));
+#include <trace/sched_event_types.h>

#endif
diff --git a/include/trace/sched_event_types.h b/include/trace/sched_event_types.h
new file mode 100644
index 0000000..a4f6629
--- /dev/null
+++ b/include/trace/sched_event_types.h
@@ -0,0 +1,72 @@
+
+/* use <trace/sched.h> instead */
+#ifndef DEFINE_TRACE_FMT
+# error Do not include this file directly.
+# error Unless you know what you are doing.
+#endif
+
+DEFINE_TRACE_FMT(sched_kthread_stop,
+ TPPROTO(struct task_struct *t),
+ TPARGS(t),
+ TPFMT("task %s:%d", t->comm, t->pid));
+
+DEFINE_TRACE_FMT(sched_kthread_stop_ret,
+ TPPROTO(int ret),
+ TPARGS(ret),
+ TPFMT("ret=%d", ret));
+
+DEFINE_TRACE_FMT(sched_wait_task,
+ TPPROTO(struct rq *rq, struct task_struct *p),
+ TPARGS(rq, p),
+ TPFMT("task %s:%d", p->comm, p->pid));
+
+DEFINE_TRACE_FMT(sched_wakeup,
+ TPPROTO(struct rq *rq, struct task_struct *p, int success),
+ TPARGS(rq, p, success),
+ TPFMT("task %s:%d %s",
+ p->comm, p->pid, success?"succeeded":"failed"));
+
+DEFINE_TRACE_FMT(sched_wakeup_new,
+ TPPROTO(struct rq *rq, struct task_struct *p, int success),
+ TPARGS(rq, p, success),
+ TPFMT("task %s:%d",
+ p->comm, p->pid, success?"succeeded":"failed"));
+
+DEFINE_TRACE_FMT(sched_switch,
+ TPPROTO(struct rq *rq, struct task_struct *prev,
+ struct task_struct *next),
+ TPARGS(rq, prev, next),
+ TPFMT("task %s:%d ==> %s:%d",
+ prev->comm, prev->pid, next->comm, next->pid));
+
+DEFINE_TRACE_FMT(sched_migrate_task,
+ TPPROTO(struct task_struct *p, int orig_cpu, int dest_cpu),
+ TPARGS(p, orig_cpu, dest_cpu),
+ TPFMT("task %s:%d from: %d to: %d",
+ p->comm, p->pid, orig_cpu, dest_cpu));
+
+DEFINE_TRACE_FMT(sched_process_free,
+ TPPROTO(struct task_struct *p),
+ TPARGS(p),
+ TPFMT("task %s:%d", p->comm, p->pid));
+
+DEFINE_TRACE_FMT(sched_process_exit,
+ TPPROTO(struct task_struct *p),
+ TPARGS(p),
+ TPFMT("task %s:%d", p->comm, p->pid));
+
+DEFINE_TRACE_FMT(sched_process_wait,
+ TPPROTO(struct pid *pid),
+ TPARGS(pid),
+ TPFMT("pid %d", pid));
+
+DEFINE_TRACE_FMT(sched_process_fork,
+ TPPROTO(struct task_struct *parent, struct task_struct *child),
+ TPARGS(parent, child),
+ TPFMT("parent %s:%d child %s:%d",
+ parent->comm, parent->pid, child->comm, child->pid));
+
+DEFINE_TRACE_FMT(sched_signal_send,
+ TPPROTO(int sig, struct task_struct *p),
+ TPARGS(sig, p),
+ TPFMT("sig: %d task %s:%d", sig, p->comm, p->pid));
diff --git a/kernel/trace/Makefile b/kernel/trace/Makefile
index c736356..664b6c0 100644
--- a/kernel/trace/Makefile
+++ b/kernel/trace/Makefile
@@ -39,5 +39,6 @@ obj-$(CONFIG_KMEMTRACE) += kmemtrace.o
obj-$(CONFIG_WORKQUEUE_TRACER) += trace_workqueue.o
obj-$(CONFIG_BLK_DEV_IO_TRACE) += blktrace.o
obj-$(CONFIG_EVENT_TRACER) += trace_events.o
+obj-$(CONFIG_EVENT_TRACER) += events.o

libftrace-y := ftrace.o
diff --git a/kernel/trace/events.c b/kernel/trace/events.c
new file mode 100644
index 0000000..38c89ee
--- /dev/null
+++ b/kernel/trace/events.c
@@ -0,0 +1,13 @@
+/*
+ * This is the place to register all trace points as events.
+ * Include the trace/<type>.h at the top.
+ * Include the trace/<type>_event_types.h at the bottom.
+ */
+
+/* trace/<type>.h here */
+#include <trace/sched.h>
+
+#include "trace_events.h"
+
+/* trace/<type>_event_types.h here */
+#include <trace/sched_event_types.h>
--
1.5.6.5
--


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