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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-07-23 00:03:43 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-07-23 00:03:43 +0200 |
| commit | cb08e0353c249a27aed10c6f60a13871ae449d33 (patch) | |
| tree | 1f0a5ea686df33423b364a98cc692d94b86676ab /kernel/power | |
| parent | 8915aa2042f85ecf86d4a202ef6d04bf06f05cca (diff) | |
| download | linux-cb08e0353c249a27aed10c6f60a13871ae449d33.tar.gz linux-cb08e0353c249a27aed10c6f60a13871ae449d33.tar.bz2 linux-cb08e0353c249a27aed10c6f60a13871ae449d33.zip | |
PM / timekeeping: Print debug messages when requested
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>
Diffstat (limited to 'kernel/power')
| -rw-r--r-- | kernel/power/main.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/kernel/power/main.c b/kernel/power/main.c index 5ce00902c7e3..b7876eaf83f3 100644 --- a/kernel/power/main.c +++ b/kernel/power/main.c @@ -388,13 +388,14 @@ static ssize_t pm_debug_messages_store(struct kobject *kobj, power_attr(pm_debug_messages); /** - * pm_pr_dbg - Print a suspend debug message to the kernel log. + * __pm_pr_dbg - Print a suspend debug message to the kernel log. + * @defer: Whether or not to use printk_deferred() to print the message. * @fmt: Message format. * * The message will be emitted if enabled through the pm_debug_messages * sysfs attribute. */ -void pm_pr_dbg(const char *fmt, ...) +void __pm_pr_dbg(bool defer, const char *fmt, ...) { struct va_format vaf; va_list args; @@ -407,7 +408,10 @@ void pm_pr_dbg(const char *fmt, ...) vaf.fmt = fmt; vaf.va = &args; - printk(KERN_DEBUG "PM: %pV", &vaf); + if (defer) + printk_deferred(KERN_DEBUG "PM: %pV", &vaf); + else + printk(KERN_DEBUG "PM: %pV", &vaf); va_end(args); } |