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PM / timekeeping: Print debug messages when requested

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The messages printed by tk_debug_account_sleep_time() are basically
useful for system sleep debugging, so print them only when the other
debug messages from the core suspend/hibernate code are enabled.

While at it, make it clear that the messages from
tk_debug_account_sleep_time() are about timekeeping suspend
duration, because in general timekeeping may be suspeded and
resumed for multiple times during one system suspend-resume cycle.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Rafael J. Wysocki
2017-07-23 00:03:43 +02:00
parent 8915aa2042
commit cb08e0353c
3 changed files with 18 additions and 7 deletions
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10
include/linux/suspend.h
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@@ -492,16 +492,22 @@ static inline void unlock_system_sleep(void) {}
#ifdef CONFIG_PM_SLEEP_DEBUG
extern bool pm_print_times_enabled;
extern __printf(1, 2) void pm_pr_dbg(const char *fmt, ...);
extern __printf(2, 3) void __pm_pr_dbg(bool defer, const char *fmt, ...);
#else
#define pm_print_times_enabled (false)
#include <linux/printk.h>
#define pm_pr_dbg(fmt, ...) \
#define __pm_pr_dbg(defer, fmt, ...) \
no_printk(KERN_DEBUG fmt, ##__VA_ARGS__)
#endif
#define pm_pr_dbg(fmt, ...) \
__pm_pr_dbg(false, fmt, ##__VA_ARGS__)
#define pm_deferred_pr_dbg(fmt, ...) \
__pm_pr_dbg(true, fmt, ##__VA_ARGS__)
#ifdef CONFIG_PM_AUTOSLEEP
/* kernel/power/autosleep.c */