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PM / sleep: new suspend_resume trace event for console resume

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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>
This commit is contained in:
Todd E Brandt 2014-09-19 14:07:12 -07:00 committed by Rafael J. Wysocki
parent acc82342f6
commit 0cadc70282
1 changed files with 2 additions and 0 deletions
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2
kernel/power/suspend.c
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@ -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);