From 4611a4fb0cce3973dce8c9d74e5d6261ffa4210f Mon Sep 17 00:00:00 2001 From: Janakarajan Natarajan Date: Tue, 5 Nov 2019 17:16:57 +0000 Subject: [PATCH] cpupower: ToDo: Update ToDo with ideas for per_cpu_schedule handling Based on Thomas Renninger's feedback/ideas. Re-structure the code to better handle the per_cpu_schedule mechanism which was introduced when adding support for AMD Zen based processors. Signed-off-by: Janakarajan Natarajan Acked-by: Thomas Renninger Signed-off-by: Shuah Khan --- tools/power/cpupower/ToDo | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/tools/power/cpupower/ToDo b/tools/power/cpupower/ToDo index 6e8b89f282e6..b196a139a3e4 100644 --- a/tools/power/cpupower/ToDo +++ b/tools/power/cpupower/ToDo @@ -8,3 +8,17 @@ ToDos sorted by priority: - Add another c1e debug idle monitor -> Is by design racy with BIOS, but could be added with a --force option and some "be careful" messages +- Add cpu_start()/cpu_stop() callbacks for monitor + -> This is to move the per_cpu logic from inside the + monitor to outside it. This can be given higher + priority in fork_it. +- Fork as many processes as there are CPUs in case the + per_cpu_schedule flag is set. + -> Bind forked process to each cpu. + -> Execute start measures via the forked processes on + each cpu. + -> Run test executable in a forked process. + -> Execute stop measures via the forked processes on + each cpu. + This would be ideal as it will not introduce noise in the + tested executable.