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authorJanakarajan Natarajan <Janakarajan.Natarajan@amd.com>2019-11-05 17:16:57 +0000
committerShuah Khan <skhan@linuxfoundation.org>2019-11-05 17:23:23 -0700
commit4611a4fb0cce3973dce8c9d74e5d6261ffa4210f (patch)
tree581e1cf7f8b366c3aeec28a0adb493ea0f5a43af /tools/power
parent6af2ed53f0402c09b36d2b38698e18a25ca732a7 (diff)
downloadlinux-4611a4fb0cce3973dce8c9d74e5d6261ffa4210f.tar.bz2
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 <Janakarajan.Natarajan@amd.com> Acked-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Diffstat (limited to 'tools/power')
-rw-r--r--tools/power/cpupower/ToDo14
1 files changed, 14 insertions, 0 deletions
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.