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authorTodd E Brandt <todd.e.brandt@linux.intel.com>2014-09-19 23:07:12 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2014-09-22 14:53:23 +0200
commit0cadc70282df0d957c00e8e68ba58afeefdf0f64 (patch)
tree9d49fafaa4dcfc80f1d92a5e10335030bd613a2f /kernel/power/suspend.c
parentPM / sleep: Update test_suspend option documentation (diff)
downloadlinux-0cadc70282df0d957c00e8e68ba58afeefdf0f64.tar.xz
linux-0cadc70282df0d957c00e8e68ba58afeefdf0f64.zip
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>
Diffstat (limited to 'kernel/power/suspend.c')
-rw-r--r--kernel/power/suspend.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c
index 18c62195660f..e837dd6783c6 100644
--- a/kernel/power/suspend.c
+++ b/kernel/power/suspend.c
@@ -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);