PM / sleep: add pm-trace support for suspending phase
Occasionally, the system can't come back up after suspend/resume
due to problems of device suspending phase. This patch make
PM_TRACE infrastructure cover device suspending phase of
suspend/resume process, and the information in RTC can tell
developers which device suspending function make system hang.
Signed-off-by: Zhonghui Fu <zhonghui.fu@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
diff --git a/include/linux/resume-trace.h b/include/linux/pm-trace.h
similarity index 75%
rename from include/linux/resume-trace.h
rename to include/linux/pm-trace.h
index f31db23..ecbde7a 100644
--- a/include/linux/resume-trace.h
+++ b/include/linux/pm-trace.h
@@ -1,8 +1,8 @@
-#ifndef RESUME_TRACE_H
-#define RESUME_TRACE_H
+#ifndef PM_TRACE_H
+#define PM_TRACE_H
#ifdef CONFIG_PM_TRACE
-#include <asm/resume-trace.h>
+#include <asm/pm-trace.h>
#include <linux/types.h>
extern int pm_trace_enabled;
@@ -14,7 +14,7 @@
struct device;
extern void set_trace_device(struct device *);
-extern void generate_resume_trace(const void *tracedata, unsigned int user);
+extern void generate_pm_trace(const void *tracedata, unsigned int user);
extern int show_trace_dev_match(char *buf, size_t size);
#define TRACE_DEVICE(dev) do { \
@@ -28,6 +28,7 @@
#define TRACE_DEVICE(dev) do { } while (0)
#define TRACE_RESUME(dev) do { } while (0)
+#define TRACE_SUSPEND(dev) do { } while (0)
#endif