Commit 979fccfb authored by Dan Williams's avatar Dan Williams

libnvdimm, pfn: enable pfn sysfs interface unit testing

The unit test infrastructure uses CMA and real memory to emulate nvdimm
resources.  The call to devm_memremap_pages() can simply be mocked in
the same manner as memremap and we mock phys_to_pfn_t() to clear PFN_MAP
since these resources are not registered with in the pgmap_radix.
Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
parent 2dc43331
...@@ -9,6 +9,8 @@ ldflags-y += --wrap=memunmap ...@@ -9,6 +9,8 @@ ldflags-y += --wrap=memunmap
ldflags-y += --wrap=__devm_request_region ldflags-y += --wrap=__devm_request_region
ldflags-y += --wrap=__request_region ldflags-y += --wrap=__request_region
ldflags-y += --wrap=__release_region ldflags-y += --wrap=__release_region
ldflags-y += --wrap=devm_memremap_pages
ldflags-y += --wrap=phys_to_pfn_t
DRIVERS := ../../../drivers DRIVERS := ../../../drivers
NVDIMM_SRC := $(DRIVERS)/nvdimm NVDIMM_SRC := $(DRIVERS)/nvdimm
......
...@@ -94,6 +94,54 @@ void *__wrap_devm_memremap(struct device *dev, resource_size_t offset, ...@@ -94,6 +94,54 @@ void *__wrap_devm_memremap(struct device *dev, resource_size_t offset,
} }
EXPORT_SYMBOL(__wrap_devm_memremap); EXPORT_SYMBOL(__wrap_devm_memremap);
#ifdef __HAVE_ARCH_PTE_DEVMAP
#include <linux/memremap.h>
#include <linux/pfn_t.h>
void *__wrap_devm_memremap_pages(struct device *dev, struct resource *res,
struct percpu_ref *ref, struct vmem_altmap *altmap)
{
resource_size_t offset = res->start;
struct nfit_test_resource *nfit_res;
rcu_read_lock();
nfit_res = get_nfit_res(offset);
rcu_read_unlock();
if (nfit_res)
return nfit_res->buf + offset - nfit_res->res->start;
return devm_memremap_pages(dev, res, ref, altmap);
}
EXPORT_SYMBOL(__wrap_devm_memremap_pages);
pfn_t __wrap_phys_to_pfn_t(dma_addr_t addr, unsigned long flags)
{
struct nfit_test_resource *nfit_res;
rcu_read_lock();
nfit_res = get_nfit_res(addr);
rcu_read_unlock();
if (nfit_res)
flags &= ~PFN_MAP;
return phys_to_pfn_t(addr, flags);
}
EXPORT_SYMBOL(__wrap_phys_to_pfn_t);
#else
/* to be removed post 4.5-rc1 */
void *__wrap_devm_memremap_pages(struct device *dev, struct resource *res)
{
resource_size_t offset = res->start;
struct nfit_test_resource *nfit_res;
rcu_read_lock();
nfit_res = get_nfit_res(offset);
rcu_read_unlock();
if (nfit_res)
return nfit_res->buf + offset - nfit_res->res->start;
return devm_memremap_pages(dev, res);
}
EXPORT_SYMBOL(__wrap_devm_memremap_pages);
#endif
void *__wrap_memremap(resource_size_t offset, size_t size, void *__wrap_memremap(resource_size_t offset, size_t size,
unsigned long flags) unsigned long flags)
{ {
......
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