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Subject[PATCH V6 1/2] tracing, perf: cpu hotplug trace events
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Define new events for tracing cpu hotplug
* trace time spent in core and arch dependant code
* trace the state of cpu

Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
---
include/trace/events/cpu_hotplug.h | 103 ++++++++++++++++++++++++++++++++++++
1 files changed, 103 insertions(+), 0 deletions(-)
create mode 100644 include/trace/events/cpu_hotplug.h

diff --git a/include/trace/events/cpu_hotplug.h
b/include/trace/events/cpu_hotplug.h
new file mode 100644
index 0000000..54a7f97
--- /dev/null
+++ b/include/trace/events/cpu_hotplug.h
@@ -0,0 +1,103 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM cpu_hotplug
+
+#if !defined(_TRACE_CPU_HOTPLUG_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_CPU_HOTPLUG_H
+
+#include <linux/tracepoint.h>
+
+DECLARE_EVENT_CLASS(cpu_hotplug,
+
+ TP_PROTO(unsigned int cpuid),
+
+ TP_ARGS(cpuid),
+
+ TP_STRUCT__entry(
+ __field( unsigned int, cpuid )
+ ),
+
+ TP_fast_assign(
+ __entry->cpuid = cpuid;
+ ),
+
+ TP_printk("cpuid=%u", __entry->cpuid)
+);
+
+/* Core function of cpu hotplug */
+
+DEFINE_EVENT(cpu_hotplug, cpu_hotplug_down_start,
+
+ TP_PROTO(unsigned int cpuid),
+
+ TP_ARGS(cpuid)
+);
+
+DEFINE_EVENT(cpu_hotplug, cpu_hotplug_down_end,
+
+ TP_PROTO(unsigned int cpuid),
+
+ TP_ARGS(cpuid)
+);
+
+DEFINE_EVENT(cpu_hotplug, cpu_hotplug_up_start,
+
+ TP_PROTO(unsigned int cpuid),
+
+ TP_ARGS(cpuid)
+);
+
+DEFINE_EVENT(cpu_hotplug, cpu_hotplug_up_end,
+
+ TP_PROTO(unsigned int cpuid),
+
+ TP_ARGS(cpuid)
+);
+
+/* Architecture function for cpu hotplug */
+
+DEFINE_EVENT(cpu_hotplug, cpu_hotplug_disable_start,
+
+ TP_PROTO(unsigned int cpuid),
+
+ TP_ARGS(cpuid)
+);
+
+DEFINE_EVENT(cpu_hotplug, cpu_hotplug_disable_end,
+
+ TP_PROTO(unsigned int cpuid),
+
+ TP_ARGS(cpuid)
+);
+
+DEFINE_EVENT(cpu_hotplug, cpu_hotplug_die_start,
+
+ TP_PROTO(unsigned int cpuid),
+
+ TP_ARGS(cpuid)
+);
+
+DEFINE_EVENT(cpu_hotplug, cpu_hotplug_die_end,
+
+ TP_PROTO(unsigned int cpuid),
+
+ TP_ARGS(cpuid)
+);
+
+DEFINE_EVENT(cpu_hotplug, cpu_hotplug_arch_up_start,
+
+ TP_PROTO(unsigned int cpuid),
+
+ TP_ARGS(cpuid)
+);
+
+DEFINE_EVENT(cpu_hotplug, cpu_hotplug_arch_up_end,
+
+ TP_PROTO(unsigned int cpuid),
+
+ TP_ARGS(cpuid)
+);
+
+#endif /* _TRACE_CPU_HOTPLUG_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>
--
1.7.1

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