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: Dan Williams <dan.j.williams@intel.com>
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2dc43331e3
Коммит
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@ -9,6 +9,8 @@ ldflags-y += --wrap=memunmap
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ldflags-y += --wrap=__devm_request_region
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ldflags-y += --wrap=__request_region
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ldflags-y += --wrap=__release_region
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ldflags-y += --wrap=devm_memremap_pages
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ldflags-y += --wrap=phys_to_pfn_t
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DRIVERS := ../../../drivers
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NVDIMM_SRC := $(DRIVERS)/nvdimm
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@ -94,6 +94,54 @@ void *__wrap_devm_memremap(struct device *dev, resource_size_t offset,
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}
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EXPORT_SYMBOL(__wrap_devm_memremap);
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#ifdef __HAVE_ARCH_PTE_DEVMAP
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#include <linux/memremap.h>
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#include <linux/pfn_t.h>
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void *__wrap_devm_memremap_pages(struct device *dev, struct resource *res,
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struct percpu_ref *ref, struct vmem_altmap *altmap)
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{
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resource_size_t offset = res->start;
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struct nfit_test_resource *nfit_res;
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rcu_read_lock();
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nfit_res = get_nfit_res(offset);
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rcu_read_unlock();
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if (nfit_res)
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return nfit_res->buf + offset - nfit_res->res->start;
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return devm_memremap_pages(dev, res, ref, altmap);
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}
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EXPORT_SYMBOL(__wrap_devm_memremap_pages);
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pfn_t __wrap_phys_to_pfn_t(dma_addr_t addr, unsigned long flags)
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{
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struct nfit_test_resource *nfit_res;
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rcu_read_lock();
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nfit_res = get_nfit_res(addr);
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rcu_read_unlock();
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if (nfit_res)
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flags &= ~PFN_MAP;
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return phys_to_pfn_t(addr, flags);
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}
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EXPORT_SYMBOL(__wrap_phys_to_pfn_t);
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#else
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/* to be removed post 4.5-rc1 */
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void *__wrap_devm_memremap_pages(struct device *dev, struct resource *res)
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{
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resource_size_t offset = res->start;
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struct nfit_test_resource *nfit_res;
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rcu_read_lock();
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nfit_res = get_nfit_res(offset);
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rcu_read_unlock();
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if (nfit_res)
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return nfit_res->buf + offset - nfit_res->res->start;
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return devm_memremap_pages(dev, res);
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}
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EXPORT_SYMBOL(__wrap_devm_memremap_pages);
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#endif
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void *__wrap_memremap(resource_size_t offset, size_t size,
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unsigned long flags)
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{
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