Messages in this thread | | | From | Arnd Bergmann <> | Subject | Re: [PATCH] unicore32 framebuffer driver fix: make videomemory kmalloc-ed and floatable | Date | Wed, 30 Mar 2011 08:54:05 +0200 |
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On Wednesday 30 March 2011 03:39:26 Guan Xuetao wrote: > > How does this work? UNIFB_MEMSIZE seems to be 4 MB, much more than the > > maximum of 128 KB that kmalloc can allocate. > > > > Shouldn't this use get_free_pages() instead of kmalloc? > > > > When using SLUB allocator, if required memory size is larger > than 2*PAGE_SIZE, kmalloc_large is called, > and eventually __get_free_pages will be called. > So, it would be the same as __get_free_pages.
Ok, I see. It's probably still better to use __get_free_pages directly, because it's possible to select a different allocator that does not do this itself.
Arnd
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