Messages in this thread | | | Date | Mon, 16 Mar 2020 17:42:00 +0000 | From | Catalin Marinas <> | Subject | Re: [PATCH] arm64: Kconfig: allow to change FORCE_MAX_ZONEORDER via custom config |
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On Fri, Mar 13, 2020 at 02:45:58PM +0200, Vadym Kochan wrote: > On Fri, Mar 13, 2020 at 12:37:41PM +0000, Catalin Marinas wrote: > > On Fri, Mar 13, 2020 at 01:50:37AM +0200, Vadym Kochan wrote: > > > Add missing config option name which allows to change it via custom > > > config. > > > > Why? What is your use-case? > > I need to allocate buffers bigger than default ZONEORDER, so I tried to > increase it but it did not work because the config entry has no name.
I try not to make this selectable as we want a single kernel build to work on all supported hardware. The current values are chosen to allow huge pages. If you need bigger contiguous allocations, maybe something like CMA would help.
-- Catalin
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