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DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 02 Jun 2023 19:32:51.3687 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 22670920-0de5-416d-b4bd-08db63a027bd X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d; Ip=[165.204.84.17]; Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CO1NAM11FT026.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN9PR12MB5163 Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org 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 --- v3->v4: * add back do/while as it wasn't pointless. It fixes a warning. --- include/linux/suspend.h | 8 +++++--- 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) {