tracing/power: move the power trace headers to a dedicated file

Impact: cleanup

Move the power tracer headers to trace/power.h to keep ftrace.h and power bits
more easy to maintain as separated topics.
Signed-off-by: NFrederic Weisbecker <fweisbec@gmail.com>
Cc: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c

@@ -33,7 +33,7 @@
 #include <linux/cpufreq.h>
 #include <linux/compiler.h>
 #include <linux/dmi.h>
-#include <linux/ftrace.h>
+#include <trace/power.h>
 
 #include <linux/acpi.h>
 #include <acpi/processor.h>

arch/x86/kernel/process.c

@@ -8,7 +8,7 @@
 #include <linux/module.h>
 #include <linux/pm.h>
 #include <linux/clockchips.h>
-#include <linux/ftrace.h>
+#include <trace/power.h>
 #include <asm/system.h>
 #include <asm/apic.h>
 

include/linux/ftrace.h

@@ -339,36 +339,6 @@ ftrace_init_module(struct module *mod,
 		   unsigned long *start, unsigned long *end) { }
 #endif
 
-enum {
-	POWER_NONE = 0,
-	POWER_CSTATE = 1,
-	POWER_PSTATE = 2,
-};
-
-struct power_trace {
-#ifdef CONFIG_POWER_TRACER
-	ktime_t			stamp;
-	ktime_t			end;
-	int			type;
-	int			state;
-#endif
-};
-
-#ifdef CONFIG_POWER_TRACER
-extern void trace_power_start(struct power_trace *it, unsigned int type,
-					unsigned int state);
-extern void trace_power_mark(struct power_trace *it, unsigned int type,
-					unsigned int state);
-extern void trace_power_end(struct power_trace *it);
-#else
-static inline void trace_power_start(struct power_trace *it, unsigned int type,
-					unsigned int state) { }
-static inline void trace_power_mark(struct power_trace *it, unsigned int type,
-					unsigned int state) { }
-static inline void trace_power_end(struct power_trace *it) { }
-#endif
-
-
 /*
  * Structure that defines an entry function trace.
  */

include/trace/power.h

+#ifndef _TRACE_POWER_H
+#define _TRACE_POWER_H
+
+#include <linux/ktime.h>
+
+enum {
+	POWER_NONE = 0,
+	POWER_CSTATE = 1,
+	POWER_PSTATE = 2,
+};
+
+struct power_trace {
+#ifdef CONFIG_POWER_TRACER
+	ktime_t			stamp;
+	ktime_t			end;
+	int			type;
+	int			state;
+#endif
+};
+
+#ifdef CONFIG_POWER_TRACER
+extern void trace_power_start(struct power_trace *it, unsigned int type,
+					unsigned int state);
+extern void trace_power_mark(struct power_trace *it, unsigned int type,
+					unsigned int state);
+extern void trace_power_end(struct power_trace *it);
+#else
+static inline void trace_power_start(struct power_trace *it, unsigned int type,
+					unsigned int state) { }
+static inline void trace_power_mark(struct power_trace *it, unsigned int type,
+					unsigned int state) { }
+static inline void trace_power_end(struct power_trace *it) { }
+#endif
+
+#endif /* _TRACE_POWER_H */

kernel/trace/trace.h

@@ -10,6 +10,7 @@
 #include <linux/ftrace.h>
 #include <trace/boot.h>
 #include <trace/kmemtrace.h>
+#include <trace/power.h>
 
 enum trace_type {
 	__TRACE_FIRST_TYPE = 0,

kernel/trace/trace_power.c

@@ -11,7 +11,7 @@
 
 #include <linux/init.h>
 #include <linux/debugfs.h>
-#include <linux/ftrace.h>
+#include <trace/power.h>
 #include <linux/kallsyms.h>
 #include <linux/module.h>