> -----Original Message----- > From: Arnd Bergmann [mailto:arnd@xxxxxxxx] > Sent: Wednesday, March 30, 2011 2:54 PM > To: Guan Xuetao > Cc: 'Paul Mundt'; linux-kernel@xxxxxxxxxxxxxxx; linux-fbdev@xxxxxxxxxxxxxxx > Subject: Re: [PATCH] unicore32 framebuffer driver fix: make videomemory kmalloc-ed and floatable > > 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 Is it appropriate to using __get_free_pages in framebuffer driver? And both SLAB and SLUB allocators support 4MB request. Thanks & Regards. Guan Xuetao -- To unsubscribe from this list: send the line "unsubscribe linux-fbdev" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
