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| author | Mario Limonciello <mario.limonciello@amd.com> | 2023-06-02 02:30:22 -0500 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2023-06-12 19:56:08 +0200 |
| commit | cdb8c100d8a4b4e31c829724e40b4fdf32977cce (patch) | |
| tree | cfeff728ed34c92a4be5e1a50dc7e54b71d15795 | |
| parent | ab23ed6e73ecd198bf577077677beaded0a9e718 (diff) | |
| download | lwn-cdb8c100d8a4b4e31c829724e40b4fdf32977cce.tar.gz lwn-cdb8c100d8a4b4e31c829724e40b4fdf32977cce.zip | |
include/linux/suspend.h: Only show pm_pr_dbg messages at suspend/resume
All uses in the kernel are currently already oriented around
suspend/resume. As some other parts of the kernel may also use these
messages in functions that could also be used outside of
suspend/resume, only enable in suspend/resume path.
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| -rw-r--r-- | include/linux/suspend.h | 8 | ||||
| -rw-r--r-- | kernel/power/main.c | 6 |
2 files changed, 11 insertions, 3 deletions
diff --git a/include/linux/suspend.h b/include/linux/suspend.h index 1a0426e6761c..74f406c53ac0 100644 --- a/include/linux/suspend.h +++ b/include/linux/suspend.h @@ -555,6 +555,7 @@ static inline void unlock_system_sleep(unsigned int flags) {} #ifdef CONFIG_PM_SLEEP_DEBUG extern bool pm_print_times_enabled; extern bool pm_debug_messages_on; +extern bool pm_debug_messages_should_print(void); static inline int pm_dyn_debug_messages_on(void) { #ifdef CONFIG_DYNAMIC_DEBUG @@ -568,14 +569,14 @@ static inline int pm_dyn_debug_messages_on(void) #endif #define __pm_pr_dbg(fmt, ...) \ do { \ - if (pm_debug_messages_on) \ + if (pm_debug_messages_should_print()) \ printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); \ else if (pm_dyn_debug_messages_on()) \ pr_debug(fmt, ##__VA_ARGS__); \ } while (0) #define __pm_deferred_pr_dbg(fmt, ...) \ do { \ - if (pm_debug_messages_on) \ + if (pm_debug_messages_should_print()) \ printk_deferred(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); \ } while (0) #else @@ -593,7 +594,8 @@ static inline int pm_dyn_debug_messages_on(void) /** * pm_pr_dbg - print pm sleep debug messages * - * If pm_debug_messages_on is enabled, print message. + * If pm_debug_messages_on is enabled and the system is entering/leaving + * suspend, print message. * If pm_debug_messages_on is disabled and CONFIG_DYNAMIC_DEBUG is enabled, * print message only from instances explicitly enabled on dynamic debug's * control. diff --git a/kernel/power/main.c b/kernel/power/main.c index 3113ec2f1db4..daa535012e51 100644 --- a/kernel/power/main.c +++ b/kernel/power/main.c @@ -556,6 +556,12 @@ power_attr_ro(pm_wakeup_irq); bool pm_debug_messages_on __read_mostly; +bool pm_debug_messages_should_print(void) +{ + return pm_debug_messages_on && pm_suspend_target_state != PM_SUSPEND_ON; +} +EXPORT_SYMBOL_GPL(pm_debug_messages_should_print); + static ssize_t pm_debug_messages_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { |