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Kobo/Elipsa: More fine-grained control over the amount of online CPU

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cores

* Only keep a single core online most of the time.
* Device: Add an enableCPUCores method to allow controlling the amount of
  online CPU cores.
* Move the initial core onlining setup to Kobo:init, instead of the startup script.
* Enable two CPU cores while hinting new (e.g., cache miss) pages in PDF land.
* Enable two CPU cores while processing book metadata.
* Drive-by fix to isolate the DocCache pressure check to KoptInterface
  and actually apply it when it matters most (e.g., k2pdfopt stuff).
This commit is contained in:
NiLuJe
2021-09-23 17:13:18 +02:00
parent 65abac9431
commit 48da545e32
8 changed files with 126 additions and 38 deletions
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4
frontend/device/generic/device.lua
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@@ -460,6 +460,10 @@ end
-- Device specific method for toggling the charging LED
function Device:toggleChargingLED(toggle) end
-- Device specific method for enabling a specific amount of CPU cores
-- (Should only be implemented on embedded platforms where we can afford to control that without screwing with the system).
function Device:enableCPUCores(amount) end
--[[
prepare for application shutdown
--]]