new suspend_resume trace event for console resume
Subsystems (2)
PATCH 1/1 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.
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kernel/power/suspend.c | 2 ++ 1 file changed, 2 insertions(+)
kernel/power/suspend.c +2 -0
@@ -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);
Rafael J. Wysocki
AppliedQuoted 7 lines · Todd E Brandt
This patch adds another
suspend_resumetrace event foranalyze_suspendto capture. Theresume_consolecall 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 <[email protected]>
Queued up for 3.18, thanks!
Quoted 22 lines
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kernel/power/suspend.c | 2 ++ 1 file changed, 2 insertions(+)kernel/power/suspend.c +2
-1@@ -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); --To unsubscribe from this list: send the line "unsubscribe linux-pm" in the body of a message to [email protected]
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Signature · 2 lines
I speak only for myself. Rafael J. Wysocki, Intel Open Source Technology Center.