tree b24081a4e879a0b7a9872d262296cb55fc769469
parent fdfe840e480c56dc1119c31bb4fcc211b1b9b46f
author Todd E Brandt <todd.e.brandt@linux.intel.com> 1389917902 -0800
committer Rafael J. Wysocki <rafael.j.wysocki@intel.com> 1389919646 +0100

PM / tools: new tool for suspend/resume performance optimization

This tool is designed to assist kernel and OS developers in optimizing
their linux stack's suspend/resume time. Using a kernel image built with a
few extra options enabled, the tool will execute a suspend and will
capture dmesg and ftrace data until resume is complete. This data is
transformed into a device timeline and a callgraph to give a quick and
detailed view of which devices and callbacks are taking the most time in
suspend/resume. The output is a single html file which can be viewed in
firefox or chrome.

References: https://01.org/suspendresume
Signed-off-by: Todd Brandt <todd.e.brandt@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>