Re: [PATCH v4] PM: add statistics debugfs file for suspend to ram
From: Mansoor, Illyas <hidden>
Date: 2011-08-10 18:00:40
quoted hunk
+struct suspend_stats suspend_stats; static DEFINE_MUTEX(dpm_list_mtx); static pm_message_t pm_transition;@@ -464,8 +465,12 @@ void dpm_resume_noirq(pm_message_t state) mutex_unlock(&dpm_list_mtx); error = device_resume_noirq(dev, state); - if (error) + if (error) { + suspend_stats.failed_resume_noirq++; + dpm_save_failed_step(SUSPEND_RESUME_NOIRQ); + dpm_save_failed_dev(dev_name(dev));
Please make these statistics conditionally enabled, so on a production system If we need to disable these statistics code we should be able to do so. May be CONFIG_SUSPEND_STATS and convert those lines of code into function calls That can be stubbed out when the config is not enabled. -Illyas