On Mon, 2015-04-20 at 03:58 -0500, Liberman Igal-B31950 wrote: > > Regards, > Igal Liberman. > > > -----Original Message----- > > From: Kumar Gala [mailto:ga...@kernel.crashing.org] > > Sent: Thursday, March 12, 2015 5:57 PM > > To: Liberman Igal-B31950 > > Cc: linuxppc-dev@lists.ozlabs.org; net...@vger.kernel.org; linux- > > ker...@vger.kernel.org; Wood Scott-B07421 > > Subject: Re: [RFC,1/8] soc/fman: Add FMan MURAM support > > > > > > On Mar 11, 2015, at 12:07 AM, Igal.Liberman <igal.liber...@freescale.com> > > wrote: > > > > > From: Igal Liberman <igal.liber...@freescale.com> > > > > > > Add Frame Manager Multi-User RAM support. > > > > > > Signed-off-by: Igal Liberman <igal.liber...@freescale.com> > > > --- > > > drivers/soc/fsl/fman/Kconfig | 1 + > > > drivers/soc/fsl/fman/Makefile | 5 +- > > > drivers/soc/fsl/fman/fm_muram.c | 174 > > +++++++++++++++++++++++++++++++ > > > drivers/soc/fsl/fman/inc/fm_muram_ext.h | 98 +++++++++++++++++ > > > 4 files changed, 276 insertions(+), 2 deletions(-) create mode 100644 > > > drivers/soc/fsl/fman/fm_muram.c create mode 100644 > > > drivers/soc/fsl/fman/inc/fm_muram_ext.h > > > > > > > use lib/genalloc instead of rheap > > > > Hi Kumar, > I looked into lib/genalloc allocator. > As far as I see, the genalloc allocator doesn't allow to control the memory > alignment when you allocate a chunk of memory. > Two important notes regarding MURAM memory: > - The allocated memory chunks should have specific alignment (might be > different in each chunk). > - The allocations must be efficient, we don't want to "waste" MURAM due to > alignment issues.
If the requirement is that allocations must be size-aligned, use gen_pool_first_fit_order_align. Otherwise, improve genalloc to do what you need. -Scott _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
