Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: [PATCH] PM: trace events for device pm callbacks | Date | Tue, 10 Jun 2014 23:41:33 +0200 |
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On Tuesday, June 10, 2014 05:17:16 PM Steven Rostedt wrote: > On Tue, 10 Jun 2014 23:17:46 +0200 > "Rafael J. Wysocki" <rjw@rjwysocki.net> wrote: > > > On Tuesday, June 10, 2014 07:31:22 AM Todd E Brandt wrote: > > > Adds two trace events which supply the same info that initcall_debug > > > provides, but via ftrace instead of dmesg. The existing initcall_debug > > > calls require the pm_print_times_enabled var to be set (either via > > > sysfs or via the kernel cmd line). The new trace events provide all the > > > same info as the initcall_debug prints but with less overhead, and also > > > with coverage of device prepare and complete device callbacks. > > > > > > These events replace the device_pm_report_time event (which has been > > > removed). device_pm_callback_start is called first and provides the device > > > and callback info. device_pm_callback_end is called after with the > > > device name and error info. The time and pid are gathered from the trace > > > data headers. > > > > > > Signed-off-by: Todd Brandt <todd.e.brandt@intel.com> > > > > Steve needs to see this (CCed). > > The trace events look fine. Is there anything else you wanted me to > look at?
No, that's all, thanks!
Rafael
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