On 6/13/19 2:43 AM, Christoph Hellwig wrote: > This function has never been used since it was first added to the kernel > more than a year and a half ago, and if we ever grow a consumer of the > MEMORY_DEVICE_PUBLIC infrastructure it can easily use devm_memremap_pages > directly now that we've simplified the API for it. > > Signed-off-by: Christoph Hellwig <h...@lst.de> > --- > include/linux/hmm.h | 3 --- > mm/hmm.c | 54 --------------------------------------------- > 2 files changed, 57 deletions(-) >
No objections here, good cleanup. Reviewed-by: John Hubbard <jhubb...@nvidia.com> thanks, -- John Hubbard NVIDIA > diff --git a/include/linux/hmm.h b/include/linux/hmm.h > index 4867b9da1b6c..5761a39221a6 100644 > --- a/include/linux/hmm.h > +++ b/include/linux/hmm.h > @@ -688,9 +688,6 @@ struct hmm_devmem { > struct hmm_devmem *hmm_devmem_add(const struct hmm_devmem_ops *ops, > struct device *device, > unsigned long size); > -struct hmm_devmem *hmm_devmem_add_resource(const struct hmm_devmem_ops *ops, > - struct device *device, > - struct resource *res); > > /* > * hmm_devmem_page_set_drvdata - set per-page driver data field > diff --git a/mm/hmm.c b/mm/hmm.c > index ff2598eb7377..0c62426d1257 100644 > --- a/mm/hmm.c > +++ b/mm/hmm.c > @@ -1445,58 +1445,4 @@ struct hmm_devmem *hmm_devmem_add(const struct > hmm_devmem_ops *ops, > return devmem; > } > EXPORT_SYMBOL_GPL(hmm_devmem_add); > - > -struct hmm_devmem *hmm_devmem_add_resource(const struct hmm_devmem_ops *ops, > - struct device *device, > - struct resource *res) > -{ > - struct hmm_devmem *devmem; > - void *result; > - int ret; > - > - if (res->desc != IORES_DESC_DEVICE_PUBLIC_MEMORY) > - return ERR_PTR(-EINVAL); > - > - dev_pagemap_get_ops(); > - > - devmem = devm_kzalloc(device, sizeof(*devmem), GFP_KERNEL); > - if (!devmem) > - return ERR_PTR(-ENOMEM); > - > - init_completion(&devmem->completion); > - devmem->pfn_first = -1UL; > - devmem->pfn_last = -1UL; > - devmem->resource = res; > - devmem->device = device; > - devmem->ops = ops; > - > - ret = percpu_ref_init(&devmem->ref, &hmm_devmem_ref_release, > - 0, GFP_KERNEL); > - if (ret) > - return ERR_PTR(ret); > - > - ret = devm_add_action_or_reset(device, hmm_devmem_ref_exit, > - &devmem->ref); > - if (ret) > - return ERR_PTR(ret); > - > - devmem->pfn_first = devmem->resource->start >> PAGE_SHIFT; > - devmem->pfn_last = devmem->pfn_first + > - (resource_size(devmem->resource) >> PAGE_SHIFT); > - devmem->page_fault = hmm_devmem_fault; > - > - devmem->pagemap.type = MEMORY_DEVICE_PUBLIC; > - devmem->pagemap.res = *devmem->resource; > - devmem->pagemap.page_free = hmm_devmem_free; > - devmem->pagemap.altmap_valid = false; > - devmem->pagemap.ref = &devmem->ref; > - devmem->pagemap.data = devmem; > - devmem->pagemap.kill = hmm_devmem_ref_kill; > - > - result = devm_memremap_pages(devmem->device, &devmem->pagemap); > - if (IS_ERR(result)) > - return result; > - return devmem; > -} > -EXPORT_SYMBOL_GPL(hmm_devmem_add_resource); > #endif /* CONFIG_DEVICE_PRIVATE || CONFIG_DEVICE_PUBLIC */ > _______________________________________________ Linux-nvdimm mailing list Linux-nvdimm@lists.01.org https://lists.01.org/mailman/listinfo/linux-nvdimm