Messages in this thread | | | Subject | Re: [PATCH v6 1/3] genalloc:support memory-allocation with bytes-alignment to genalloc | From | Laura Abbott <> | Date | Mon, 24 Aug 2015 16:10:47 -0700 |
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On 08/24/2015 02:31 AM, Zhao Qiang wrote: > Bytes alignment is required to manage some special RAM, > so add gen_pool_first_fit_align to genalloc, > meanwhile add gen_pool_alloc_data to pass data to > gen_pool_first_fit_align(modify gen_pool_alloc as a wrapper) > > Signed-off-by: Zhao Qiang <qiang.zhao@freescale.com> > --- > Changes for v6: > - patches set v6 include a new patch because of using > - genalloc to manage QE MURAM, patch 0001 is the new > - patch, adding bytes alignment for allocation for use. > > include/linux/genalloc.h | 23 +++++++++++++++---- > lib/genalloc.c | 58 +++++++++++++++++++++++++++++++++++++++++++----- > 2 files changed, 72 insertions(+), 9 deletions(-) > > diff --git a/include/linux/genalloc.h b/include/linux/genalloc.h > index 1ccaab4..55da07e 100644 > --- a/include/linux/genalloc.h > +++ b/include/linux/genalloc.h > @@ -34,6 +34,7 @@ > > struct device; > struct device_node; > +struct gen_pool; > > /** > * Allocation callback function type definition > @@ -47,7 +48,7 @@ typedef unsigned long (*genpool_algo_t)(unsigned long *map, > unsigned long size, > unsigned long start, > unsigned int nr, > - void *data); > + void *data, struct gen_pool *pool); > > /* > * General purpose special memory pool descriptor. > @@ -73,6 +74,13 @@ struct gen_pool_chunk { > unsigned long bits[0]; /* bitmap for allocating memory chunk */ > }; > > +/* > + * gen_pool data descriptor for gen_pool_first_fit_align. > + */ > +struct genpool_data_align { > + int align; /* alignment by bytes for starting address */ > +}; > +
(sorry for chiming in late, I've been traveling)
Is there an advantage here to wrapping this in a structure instead of just passing a pointer to an align integer?
Thanks, Laura
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