Messages in this thread | | | Date | Sun, 19 Oct 2014 00:15:25 +0200 | From | Pavel Machek <> | Subject | Re: [PATCH 1/4] (CMA_AGGRESSIVE) Add CMA_AGGRESSIVE to Kconfig |
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Hi!
> Add CMA_AGGRESSIVE config that depend on CMA to Linux kernel config. > Add CMA_AGGRESSIVE_PHY_MAX, CMA_AGGRESSIVE_FREE_MIN and CMA_AGGRESSIVE_SHRINK > that depend on CMA_AGGRESSIVE. > > If physical memory size (not include CMA memory) in byte less than or equal to > CMA_AGGRESSIVE_PHY_MAX, CMA aggressive switch (sysctl vm.cma-aggressive-switch) > will be opened.
Ok...
Do I understand it correctly that there is some problem with hibernation not working on machines not working on machines with big CMA areas...?
But adding 4 config options end-user has no chance to set right can not be the best solution, can it?
> +config CMA_AGGRESSIVE_PHY_MAX > + hex "Physical memory size in Bytes that auto turn on the CMA aggressive switch" > + depends on CMA_AGGRESSIVE > + default 0x40000000 > + help > + If physical memory size (not include CMA memory) in byte less than or > + equal to this value, CMA aggressive switch will be opened. > + After the Linux boot, sysctl "vm.cma-aggressive-switch" can control > + the CMA AGGRESSIVE switch.
For example... how am I expected to figure right value to place here?
Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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