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linux-raspberrypi: stop setting powersave as the default CPU governor

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* The defconfigs from the RPi Kernel set `powersave` as the default
  CPU governor, which is a bad idea as that reduces performance by
  setting the CPU frequency to the minimum one.

* In case of a Yocto build user-space is not configured by default
  to change the CPU governor, so `powersave` will remain the CPU
  governor and it will slow down everything.

* I submitted a fix for those defconfigs to upstream here:
  https://github.com/raspberrypi/linux/pull/5666
  However, we shouldn't wait until that is accepted and backported
  to all the stable branches (if ever is).

* This patch unsets the selection of `powersave` as the default CPU
  governor.

* Then the CPU governor that will be selected as default after this
  patch will be the Linux's default one that is either `ondemand` or
  `schedutil` depending on the Kernel version.

Signed-off-by: Carlos Alberto Lopez Perez <clopez@igalia.com>
This commit is contained in:
Carlos Alberto Lopez Perez
2023-10-20 02:42:37 +01:00
committed by Andrei Gherzan
parent 5c2d60b3f5
commit f9af665ee4
2 changed files with 10 additions and 0 deletions
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recipes-kernel/linux/linux-raspberrypi.inc
+1
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@@ -15,6 +15,7 @@ SRC_URI += " \
${@bb.utils.contains("INITRAMFS_IMAGE_BUNDLE", "1", "file://initramfs-image-bundle.cfg", "", d)} \
${@bb.utils.contains("MACHINE_FEATURES", "vc4graphics", "file://vc4graphics.cfg", "", d)} \
${@bb.utils.contains("MACHINE_FEATURES", "wm8960", "file://wm8960.cfg", "", d)} \
file://default-cpu-governor.cfg \
"
SRC_URI:append:raspberrypi4 = " \