Commit 0cadc702 authored Sep 19, 2014 by Todd E Brandt Committed by Rafael J. Wysocki Sep 22, 2014

PM / sleep: new suspend_resume trace event for console resume



This patch adds another suspend_resume trace event for analyze_suspend
to capture. The resume_console call can take several hundred milliseconds
if the printk buffer is full of debug info. The tool will now inform
testers of the wasted time and encourage them to disable it in
production builds.

Signed-off-by: Todd Brandt <todd.e.brandt@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

parent acc82342

kernel/power/suspend.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -361,7 +361,9 @@ int suspend_devices_and_enter(suspend_state_t state)
		suspend_test_start();
		dpm_resume_end(PMSG_RESUME);
		suspend_test_finish("resume devices");
		trace_suspend_resume(TPS("resume_console"), state, true);
		resume_console();
		trace_suspend_resume(TPS("resume_console"), state, false);

		Close:
		platform_suspend_end(state);

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