| Message ID | 1489798493-16600-3-git-send-email-labbott@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
2017-03-18 1:54 GMT+01:00 Laura Abbott <labbott@redhat.com>: > > Frameworks (e.g. Ion) may want to iterate over each possible CMA area to > allow for enumeration. Introduce a function to allow a callback. even outside ION rework that could be useful Reviewed-by: Benjamin Gaignard <benjamin.gaignard@linaro.org> > > Signed-off-by: Laura Abbott <labbott@redhat.com> > --- > include/linux/cma.h | 2 ++ > mm/cma.c | 14 ++++++++++++++ > 2 files changed, 16 insertions(+) > > diff --git a/include/linux/cma.h b/include/linux/cma.h > index d41d1f8..3e8fbf5 100644 > --- a/include/linux/cma.h > +++ b/include/linux/cma.h > @@ -34,4 +34,6 @@ extern int cma_init_reserved_mem(phys_addr_t base, phys_addr_t size, > extern struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align, > gfp_t gfp_mask); > extern bool cma_release(struct cma *cma, const struct page *pages, unsigned int count); > + > +extern int cma_for_each_area(int (*it)(struct cma *cma, void *data), void *data); > #endif > diff --git a/mm/cma.c b/mm/cma.c > index 0d187b1..9a040e1 100644 > --- a/mm/cma.c > +++ b/mm/cma.c > @@ -498,3 +498,17 @@ bool cma_release(struct cma *cma, const struct page *pages, unsigned int count) > > return true; > } > + > +int cma_for_each_area(int (*it)(struct cma *cma, void *data), void *data) > +{ > + int i; > + > + for (i = 0; i < cma_area_count; i++) { > + int ret = it(&cma_areas[i], data); > + > + if (ret) > + return ret; > + } > + > + return 0; > +} > -- > 2.7.4 >
diff --git a/include/linux/cma.h b/include/linux/cma.h index d41d1f8..3e8fbf5 100644 --- a/include/linux/cma.h +++ b/include/linux/cma.h @@ -34,4 +34,6 @@ extern int cma_init_reserved_mem(phys_addr_t base, phys_addr_t size, extern struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align, gfp_t gfp_mask); extern bool cma_release(struct cma *cma, const struct page *pages, unsigned int count); + +extern int cma_for_each_area(int (*it)(struct cma *cma, void *data), void *data); #endif diff --git a/mm/cma.c b/mm/cma.c index 0d187b1..9a040e1 100644 --- a/mm/cma.c +++ b/mm/cma.c @@ -498,3 +498,17 @@ bool cma_release(struct cma *cma, const struct page *pages, unsigned int count) return true; } + +int cma_for_each_area(int (*it)(struct cma *cma, void *data), void *data) +{ + int i; + + for (i = 0; i < cma_area_count; i++) { + int ret = it(&cma_areas[i], data); + + if (ret) + return ret; + } + + return 0; +}
Frameworks (e.g. Ion) may want to iterate over each possible CMA area to allow for enumeration. Introduce a function to allow a callback. Signed-off-by: Laura Abbott <labbott@redhat.com> --- include/linux/cma.h | 2 ++ mm/cma.c | 14 ++++++++++++++ 2 files changed, 16 insertions(+)