On Mon, Feb 12, 2024 at 01:39:03PM -0800, Suren Baghdasaryan wrote: > Redefine page allocators to record allocation tags upon their invocation. > Instrument post_alloc_hook and free_pages_prepare to modify current > allocation tag. > > Signed-off-by: Suren Baghdasaryan <[email protected]> > Co-developed-by: Kent Overstreet <[email protected]> > Signed-off-by: Kent Overstreet <[email protected]> > --- > include/linux/alloc_tag.h | 10 +++ > include/linux/gfp.h | 126 ++++++++++++++++++++++++-------------- > include/linux/pagemap.h | 9 ++- > mm/compaction.c | 7 ++- > mm/filemap.c | 6 +- > mm/mempolicy.c | 52 ++++++++-------- > mm/page_alloc.c | 60 +++++++++--------- > 7 files changed, 160 insertions(+), 110 deletions(-) > > diff --git a/include/linux/alloc_tag.h b/include/linux/alloc_tag.h > index cf55a149fa84..6fa8a94d8bc1 100644 > --- a/include/linux/alloc_tag.h > +++ b/include/linux/alloc_tag.h > @@ -130,4 +130,14 @@ static inline void alloc_tag_add(union codetag_ref *ref, > struct alloc_tag *tag, > > #endif > > +#define alloc_hooks(_do_alloc) > \ > +({ \ > + typeof(_do_alloc) _res; \ > + DEFINE_ALLOC_TAG(_alloc_tag, _old); \ > + \ > + _res = _do_alloc; \ > + alloc_tag_restore(&_alloc_tag, _old); \ > + _res; \ > +})
I am delighted to see that __alloc_size survives this indirection. AFAICT, all the fortify goo continues to work with this in use. Reviewed-by: Kees Cook <[email protected]> -Kees > + > #endif /* _LINUX_ALLOC_TAG_H */ > diff --git a/include/linux/gfp.h b/include/linux/gfp.h > index de292a007138..bc0fd5259b0b 100644 > --- a/include/linux/gfp.h > +++ b/include/linux/gfp.h > @@ -6,6 +6,8 @@ > > #include <linux/mmzone.h> > #include <linux/topology.h> > +#include <linux/alloc_tag.h> > +#include <linux/sched.h> > > struct vm_area_struct; > struct mempolicy; > @@ -175,42 +177,46 @@ static inline void arch_free_page(struct page *page, > int order) { } > static inline void arch_alloc_page(struct page *page, int order) { } > #endif > > -struct page *__alloc_pages(gfp_t gfp, unsigned int order, int preferred_nid, > +struct page *__alloc_pages_noprof(gfp_t gfp, unsigned int order, int > preferred_nid, > nodemask_t *nodemask); > -struct folio *__folio_alloc(gfp_t gfp, unsigned int order, int preferred_nid, > +#define __alloc_pages(...) > alloc_hooks(__alloc_pages_noprof(__VA_ARGS__)) > + > +struct folio *__folio_alloc_noprof(gfp_t gfp, unsigned int order, int > preferred_nid, > nodemask_t *nodemask); > +#define __folio_alloc(...) > alloc_hooks(__folio_alloc_noprof(__VA_ARGS__)) > > -unsigned long __alloc_pages_bulk(gfp_t gfp, int preferred_nid, > +unsigned long alloc_pages_bulk_noprof(gfp_t gfp, int preferred_nid, > nodemask_t *nodemask, int nr_pages, > struct list_head *page_list, > struct page **page_array); > +#define __alloc_pages_bulk(...) > alloc_hooks(alloc_pages_bulk_noprof(__VA_ARGS__)) > > -unsigned long alloc_pages_bulk_array_mempolicy(gfp_t gfp, > +unsigned long alloc_pages_bulk_array_mempolicy_noprof(gfp_t gfp, > unsigned long nr_pages, > struct page **page_array); > +#define alloc_pages_bulk_array_mempolicy(...) > \ > + alloc_hooks(alloc_pages_bulk_array_mempolicy_noprof(__VA_ARGS__)) > > /* Bulk allocate order-0 pages */ > -static inline unsigned long > -alloc_pages_bulk_list(gfp_t gfp, unsigned long nr_pages, struct list_head > *list) > -{ > - return __alloc_pages_bulk(gfp, numa_mem_id(), NULL, nr_pages, list, > NULL); > -} > +#define alloc_pages_bulk_list(_gfp, _nr_pages, _list) > \ > + __alloc_pages_bulk(_gfp, numa_mem_id(), NULL, _nr_pages, _list, NULL) > > -static inline unsigned long > -alloc_pages_bulk_array(gfp_t gfp, unsigned long nr_pages, struct page > **page_array) > -{ > - return __alloc_pages_bulk(gfp, numa_mem_id(), NULL, nr_pages, NULL, > page_array); > -} > +#define alloc_pages_bulk_array(_gfp, _nr_pages, _page_array) \ > + __alloc_pages_bulk(_gfp, numa_mem_id(), NULL, _nr_pages, NULL, > _page_array) > > static inline unsigned long > -alloc_pages_bulk_array_node(gfp_t gfp, int nid, unsigned long nr_pages, > struct page **page_array) > +alloc_pages_bulk_array_node_noprof(gfp_t gfp, int nid, unsigned long > nr_pages, > + struct page **page_array) > { > if (nid == NUMA_NO_NODE) > nid = numa_mem_id(); > > - return __alloc_pages_bulk(gfp, nid, NULL, nr_pages, NULL, page_array); > + return alloc_pages_bulk_noprof(gfp, nid, NULL, nr_pages, NULL, > page_array); > } > > +#define alloc_pages_bulk_array_node(...) \ > + alloc_hooks(alloc_pages_bulk_array_node_noprof(__VA_ARGS__)) > + > static inline void warn_if_node_offline(int this_node, gfp_t gfp_mask) > { > gfp_t warn_gfp = gfp_mask & (__GFP_THISNODE|__GFP_NOWARN); > @@ -230,82 +236,104 @@ static inline void warn_if_node_offline(int this_node, > gfp_t gfp_mask) > * online. For more general interface, see alloc_pages_node(). > */ > static inline struct page * > -__alloc_pages_node(int nid, gfp_t gfp_mask, unsigned int order) > +__alloc_pages_node_noprof(int nid, gfp_t gfp_mask, unsigned int order) > { > VM_BUG_ON(nid < 0 || nid >= MAX_NUMNODES); > warn_if_node_offline(nid, gfp_mask); > > - return __alloc_pages(gfp_mask, order, nid, NULL); > + return __alloc_pages_noprof(gfp_mask, order, nid, NULL); > } > > +#define __alloc_pages_node(...) > alloc_hooks(__alloc_pages_node_noprof(__VA_ARGS__)) > + > static inline > -struct folio *__folio_alloc_node(gfp_t gfp, unsigned int order, int nid) > +struct folio *__folio_alloc_node_noprof(gfp_t gfp, unsigned int order, int > nid) > { > VM_BUG_ON(nid < 0 || nid >= MAX_NUMNODES); > warn_if_node_offline(nid, gfp); > > - return __folio_alloc(gfp, order, nid, NULL); > + return __folio_alloc_noprof(gfp, order, nid, NULL); > } > > +#define __folio_alloc_node(...) > alloc_hooks(__folio_alloc_node_noprof(__VA_ARGS__)) > + > /* > * Allocate pages, preferring the node given as nid. When nid == > NUMA_NO_NODE, > * prefer the current CPU's closest node. Otherwise node must be valid and > * online. > */ > -static inline struct page *alloc_pages_node(int nid, gfp_t gfp_mask, > - unsigned int order) > +static inline struct page *alloc_pages_node_noprof(int nid, gfp_t gfp_mask, > + unsigned int order) > { > if (nid == NUMA_NO_NODE) > nid = numa_mem_id(); > > - return __alloc_pages_node(nid, gfp_mask, order); > + return __alloc_pages_node_noprof(nid, gfp_mask, order); > } > > +#define alloc_pages_node(...) > alloc_hooks(alloc_pages_node_noprof(__VA_ARGS__)) > + > #ifdef CONFIG_NUMA > -struct page *alloc_pages(gfp_t gfp, unsigned int order); > -struct page *alloc_pages_mpol(gfp_t gfp, unsigned int order, > +struct page *alloc_pages_noprof(gfp_t gfp, unsigned int order); > +struct page *alloc_pages_mpol_noprof(gfp_t gfp, unsigned int order, > struct mempolicy *mpol, pgoff_t ilx, int nid); > -struct folio *folio_alloc(gfp_t gfp, unsigned int order); > -struct folio *vma_alloc_folio(gfp_t gfp, int order, struct vm_area_struct > *vma, > +struct folio *folio_alloc_noprof(gfp_t gfp, unsigned int order); > +struct folio *vma_alloc_folio_noprof(gfp_t gfp, int order, struct > vm_area_struct *vma, > unsigned long addr, bool hugepage); > #else > -static inline struct page *alloc_pages(gfp_t gfp_mask, unsigned int order) > +static inline struct page *alloc_pages_noprof(gfp_t gfp_mask, unsigned int > order) > { > - return alloc_pages_node(numa_node_id(), gfp_mask, order); > + return alloc_pages_node_noprof(numa_node_id(), gfp_mask, order); > } > -static inline struct page *alloc_pages_mpol(gfp_t gfp, unsigned int order, > +static inline struct page *alloc_pages_mpol_noprof(gfp_t gfp, unsigned int > order, > struct mempolicy *mpol, pgoff_t ilx, int nid) > { > - return alloc_pages(gfp, order); > + return alloc_pages_noprof(gfp, order); > } > -static inline struct folio *folio_alloc(gfp_t gfp, unsigned int order) > +static inline struct folio *folio_alloc_noprof(gfp_t gfp, unsigned int order) > { > return __folio_alloc_node(gfp, order, numa_node_id()); > } > -#define vma_alloc_folio(gfp, order, vma, addr, hugepage) \ > - folio_alloc(gfp, order) > +#define vma_alloc_folio_noprof(gfp, order, vma, addr, hugepage) > \ > + folio_alloc_noprof(gfp, order) > #endif > + > +#define alloc_pages(...) > alloc_hooks(alloc_pages_noprof(__VA_ARGS__)) > +#define alloc_pages_mpol(...) > alloc_hooks(alloc_pages_mpol_noprof(__VA_ARGS__)) > +#define folio_alloc(...) > alloc_hooks(folio_alloc_noprof(__VA_ARGS__)) > +#define vma_alloc_folio(...) > alloc_hooks(vma_alloc_folio_noprof(__VA_ARGS__)) > + > #define alloc_page(gfp_mask) alloc_pages(gfp_mask, 0) > -static inline struct page *alloc_page_vma(gfp_t gfp, > + > +static inline struct page *alloc_page_vma_noprof(gfp_t gfp, > struct vm_area_struct *vma, unsigned long addr) > { > - struct folio *folio = vma_alloc_folio(gfp, 0, vma, addr, false); > + struct folio *folio = vma_alloc_folio_noprof(gfp, 0, vma, addr, false); > > return &folio->page; > } > +#define alloc_page_vma(...) > alloc_hooks(alloc_page_vma_noprof(__VA_ARGS__)) > + > +extern unsigned long get_free_pages_noprof(gfp_t gfp_mask, unsigned int > order); > +#define __get_free_pages(...) > alloc_hooks(get_free_pages_noprof(__VA_ARGS__)) > > -extern unsigned long __get_free_pages(gfp_t gfp_mask, unsigned int order); > -extern unsigned long get_zeroed_page(gfp_t gfp_mask); > +extern unsigned long get_zeroed_page_noprof(gfp_t gfp_mask); > +#define get_zeroed_page(...) > alloc_hooks(get_zeroed_page_noprof(__VA_ARGS__)) > + > +void *alloc_pages_exact_noprof(size_t size, gfp_t gfp_mask) __alloc_size(1); > +#define alloc_pages_exact(...) > alloc_hooks(alloc_pages_exact_noprof(__VA_ARGS__)) > > -void *alloc_pages_exact(size_t size, gfp_t gfp_mask) __alloc_size(1); > void free_pages_exact(void *virt, size_t size); > -__meminit void *alloc_pages_exact_nid(int nid, size_t size, gfp_t gfp_mask) > __alloc_size(2); > > -#define __get_free_page(gfp_mask) \ > - __get_free_pages((gfp_mask), 0) > +__meminit void *alloc_pages_exact_nid_noprof(int nid, size_t size, gfp_t > gfp_mask) __alloc_size(2); > +#define alloc_pages_exact_nid(...) \ > + alloc_hooks(alloc_pages_exact_nid_noprof(__VA_ARGS__)) > + > +#define __get_free_page(gfp_mask) \ > + __get_free_pages((gfp_mask), 0) > > -#define __get_dma_pages(gfp_mask, order) \ > - __get_free_pages((gfp_mask) | GFP_DMA, (order)) > +#define __get_dma_pages(gfp_mask, order) \ > + __get_free_pages((gfp_mask) | GFP_DMA, (order)) > > extern void __free_pages(struct page *page, unsigned int order); > extern void free_pages(unsigned long addr, unsigned int order); > @@ -357,10 +385,14 @@ extern gfp_t vma_thp_gfp_mask(struct vm_area_struct > *vma); > > #ifdef CONFIG_CONTIG_ALLOC > /* The below functions must be run on a range from a single zone. */ > -extern int alloc_contig_range(unsigned long start, unsigned long end, > +extern int alloc_contig_range_noprof(unsigned long start, unsigned long end, > unsigned migratetype, gfp_t gfp_mask); > -extern struct page *alloc_contig_pages(unsigned long nr_pages, gfp_t > gfp_mask, > - int nid, nodemask_t *nodemask); > +#define alloc_contig_range(...) > alloc_hooks(alloc_contig_range_noprof(__VA_ARGS__)) > + > +extern struct page *alloc_contig_pages_noprof(unsigned long nr_pages, gfp_t > gfp_mask, > + int nid, nodemask_t *nodemask); > +#define alloc_contig_pages(...) > alloc_hooks(alloc_contig_pages_noprof(__VA_ARGS__)) > + > #endif > void free_contig_range(unsigned long pfn, unsigned long nr_pages); > > diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h > index 2df35e65557d..35636e67e2e1 100644 > --- a/include/linux/pagemap.h > +++ b/include/linux/pagemap.h > @@ -542,14 +542,17 @@ static inline void *detach_page_private(struct page > *page) > #endif > > #ifdef CONFIG_NUMA > -struct folio *filemap_alloc_folio(gfp_t gfp, unsigned int order); > +struct folio *filemap_alloc_folio_noprof(gfp_t gfp, unsigned int order); > #else > -static inline struct folio *filemap_alloc_folio(gfp_t gfp, unsigned int > order) > +static inline struct folio *filemap_alloc_folio_noprof(gfp_t gfp, unsigned > int order) > { > - return folio_alloc(gfp, order); > + return folio_alloc_noprof(gfp, order); > } > #endif > > +#define filemap_alloc_folio(...) \ > + alloc_hooks(filemap_alloc_folio_noprof(__VA_ARGS__)) > + > static inline struct page *__page_cache_alloc(gfp_t gfp) > { > return &filemap_alloc_folio(gfp, 0)->page; > diff --git a/mm/compaction.c b/mm/compaction.c > index 4add68d40e8d..f4c0e682c979 100644 > --- a/mm/compaction.c > +++ b/mm/compaction.c > @@ -1781,7 +1781,7 @@ static void isolate_freepages(struct compact_control > *cc) > * This is a migrate-callback that "allocates" freepages by taking pages > * from the isolated freelists in the block we are migrating to. > */ > -static struct folio *compaction_alloc(struct folio *src, unsigned long data) > +static struct folio *compaction_alloc_noprof(struct folio *src, unsigned > long data) > { > struct compact_control *cc = (struct compact_control *)data; > struct folio *dst; > @@ -1800,6 +1800,11 @@ static struct folio *compaction_alloc(struct folio > *src, unsigned long data) > return dst; > } > > +static struct folio *compaction_alloc(struct folio *src, unsigned long data) > +{ > + return alloc_hooks(compaction_alloc_noprof(src, data)); > +} > + > /* > * This is a migrate-callback that "frees" freepages back to the isolated > * freelist. All pages on the freelist are from the same zone, so there is > no > diff --git a/mm/filemap.c b/mm/filemap.c > index 750e779c23db..e51e474545ad 100644 > --- a/mm/filemap.c > +++ b/mm/filemap.c > @@ -957,7 +957,7 @@ int filemap_add_folio(struct address_space *mapping, > struct folio *folio, > EXPORT_SYMBOL_GPL(filemap_add_folio); > > #ifdef CONFIG_NUMA > -struct folio *filemap_alloc_folio(gfp_t gfp, unsigned int order) > +struct folio *filemap_alloc_folio_noprof(gfp_t gfp, unsigned int order) > { > int n; > struct folio *folio; > @@ -972,9 +972,9 @@ struct folio *filemap_alloc_folio(gfp_t gfp, unsigned int > order) > > return folio; > } > - return folio_alloc(gfp, order); > + return folio_alloc_noprof(gfp, order); > } > -EXPORT_SYMBOL(filemap_alloc_folio); > +EXPORT_SYMBOL(filemap_alloc_folio_noprof); > #endif > > /* > diff --git a/mm/mempolicy.c b/mm/mempolicy.c > index 10a590ee1c89..c329d00b975f 100644 > --- a/mm/mempolicy.c > +++ b/mm/mempolicy.c > @@ -2070,15 +2070,15 @@ static struct page *alloc_pages_preferred_many(gfp_t > gfp, unsigned int order, > */ > preferred_gfp = gfp | __GFP_NOWARN; > preferred_gfp &= ~(__GFP_DIRECT_RECLAIM | __GFP_NOFAIL); > - page = __alloc_pages(preferred_gfp, order, nid, nodemask); > + page = __alloc_pages_noprof(preferred_gfp, order, nid, nodemask); > if (!page) > - page = __alloc_pages(gfp, order, nid, NULL); > + page = __alloc_pages_noprof(gfp, order, nid, NULL); > > return page; > } > > /** > - * alloc_pages_mpol - Allocate pages according to NUMA mempolicy. > + * alloc_pages_mpol_noprof - Allocate pages according to NUMA mempolicy. > * @gfp: GFP flags. > * @order: Order of the page allocation. > * @pol: Pointer to the NUMA mempolicy. > @@ -2087,7 +2087,7 @@ static struct page *alloc_pages_preferred_many(gfp_t > gfp, unsigned int order, > * > * Return: The page on success or NULL if allocation fails. > */ > -struct page *alloc_pages_mpol(gfp_t gfp, unsigned int order, > +struct page *alloc_pages_mpol_noprof(gfp_t gfp, unsigned int order, > struct mempolicy *pol, pgoff_t ilx, int nid) > { > nodemask_t *nodemask; > @@ -2117,7 +2117,7 @@ struct page *alloc_pages_mpol(gfp_t gfp, unsigned int > order, > * First, try to allocate THP only on local node, but > * don't reclaim unnecessarily, just compact. > */ > - page = __alloc_pages_node(nid, > + page = __alloc_pages_node_noprof(nid, > gfp | __GFP_THISNODE | __GFP_NORETRY, order); > if (page || !(gfp & __GFP_DIRECT_RECLAIM)) > return page; > @@ -2130,7 +2130,7 @@ struct page *alloc_pages_mpol(gfp_t gfp, unsigned int > order, > } > } > > - page = __alloc_pages(gfp, order, nid, nodemask); > + page = __alloc_pages_noprof(gfp, order, nid, nodemask); > > if (unlikely(pol->mode == MPOL_INTERLEAVE) && page) { > /* skip NUMA_INTERLEAVE_HIT update if numa stats is disabled */ > @@ -2146,7 +2146,7 @@ struct page *alloc_pages_mpol(gfp_t gfp, unsigned int > order, > } > > /** > - * vma_alloc_folio - Allocate a folio for a VMA. > + * vma_alloc_folio_noprof - Allocate a folio for a VMA. > * @gfp: GFP flags. > * @order: Order of the folio. > * @vma: Pointer to VMA. > @@ -2161,7 +2161,7 @@ struct page *alloc_pages_mpol(gfp_t gfp, unsigned int > order, > * > * Return: The folio on success or NULL if allocation fails. > */ > -struct folio *vma_alloc_folio(gfp_t gfp, int order, struct vm_area_struct > *vma, > +struct folio *vma_alloc_folio_noprof(gfp_t gfp, int order, struct > vm_area_struct *vma, > unsigned long addr, bool hugepage) > { > struct mempolicy *pol; > @@ -2169,15 +2169,15 @@ struct folio *vma_alloc_folio(gfp_t gfp, int order, > struct vm_area_struct *vma, > struct page *page; > > pol = get_vma_policy(vma, addr, order, &ilx); > - page = alloc_pages_mpol(gfp | __GFP_COMP, order, > - pol, ilx, numa_node_id()); > + page = alloc_pages_mpol_noprof(gfp | __GFP_COMP, order, > + pol, ilx, numa_node_id()); > mpol_cond_put(pol); > return page_rmappable_folio(page); > } > -EXPORT_SYMBOL(vma_alloc_folio); > +EXPORT_SYMBOL(vma_alloc_folio_noprof); > > /** > - * alloc_pages - Allocate pages. > + * alloc_pages_noprof - Allocate pages. > * @gfp: GFP flags. > * @order: Power of two of number of pages to allocate. > * > @@ -2190,7 +2190,7 @@ EXPORT_SYMBOL(vma_alloc_folio); > * flags are used. > * Return: The page on success or NULL if allocation fails. > */ > -struct page *alloc_pages(gfp_t gfp, unsigned int order) > +struct page *alloc_pages_noprof(gfp_t gfp, unsigned int order) > { > struct mempolicy *pol = &default_policy; > > @@ -2201,16 +2201,16 @@ struct page *alloc_pages(gfp_t gfp, unsigned int > order) > if (!in_interrupt() && !(gfp & __GFP_THISNODE)) > pol = get_task_policy(current); > > - return alloc_pages_mpol(gfp, order, > - pol, NO_INTERLEAVE_INDEX, numa_node_id()); > + return alloc_pages_mpol_noprof(gfp, order, pol, NO_INTERLEAVE_INDEX, > + numa_node_id()); > } > -EXPORT_SYMBOL(alloc_pages); > +EXPORT_SYMBOL(alloc_pages_noprof); > > -struct folio *folio_alloc(gfp_t gfp, unsigned int order) > +struct folio *folio_alloc_noprof(gfp_t gfp, unsigned int order) > { > - return page_rmappable_folio(alloc_pages(gfp | __GFP_COMP, order)); > + return page_rmappable_folio(alloc_pages_noprof(gfp | __GFP_COMP, > order)); > } > -EXPORT_SYMBOL(folio_alloc); > +EXPORT_SYMBOL(folio_alloc_noprof); > > static unsigned long alloc_pages_bulk_array_interleave(gfp_t gfp, > struct mempolicy *pol, unsigned long nr_pages, > @@ -2229,13 +2229,13 @@ static unsigned long > alloc_pages_bulk_array_interleave(gfp_t gfp, > > for (i = 0; i < nodes; i++) { > if (delta) { > - nr_allocated = __alloc_pages_bulk(gfp, > + nr_allocated = alloc_pages_bulk_noprof(gfp, > interleave_nodes(pol), NULL, > nr_pages_per_node + 1, NULL, > page_array); > delta--; > } else { > - nr_allocated = __alloc_pages_bulk(gfp, > + nr_allocated = alloc_pages_bulk_noprof(gfp, > interleave_nodes(pol), NULL, > nr_pages_per_node, NULL, page_array); > } > @@ -2257,11 +2257,11 @@ static unsigned long > alloc_pages_bulk_array_preferred_many(gfp_t gfp, int nid, > preferred_gfp = gfp | __GFP_NOWARN; > preferred_gfp &= ~(__GFP_DIRECT_RECLAIM | __GFP_NOFAIL); > > - nr_allocated = __alloc_pages_bulk(preferred_gfp, nid, &pol->nodes, > + nr_allocated = alloc_pages_bulk_noprof(preferred_gfp, nid, &pol->nodes, > nr_pages, NULL, page_array); > > if (nr_allocated < nr_pages) > - nr_allocated += __alloc_pages_bulk(gfp, numa_node_id(), NULL, > + nr_allocated += alloc_pages_bulk_noprof(gfp, numa_node_id(), > NULL, > nr_pages - nr_allocated, NULL, > page_array + nr_allocated); > return nr_allocated; > @@ -2273,7 +2273,7 @@ static unsigned long > alloc_pages_bulk_array_preferred_many(gfp_t gfp, int nid, > * It can accelerate memory allocation especially interleaving > * allocate memory. > */ > -unsigned long alloc_pages_bulk_array_mempolicy(gfp_t gfp, > +unsigned long alloc_pages_bulk_array_mempolicy_noprof(gfp_t gfp, > unsigned long nr_pages, struct page **page_array) > { > struct mempolicy *pol = &default_policy; > @@ -2293,8 +2293,8 @@ unsigned long alloc_pages_bulk_array_mempolicy(gfp_t > gfp, > > nid = numa_node_id(); > nodemask = policy_nodemask(gfp, pol, NO_INTERLEAVE_INDEX, &nid); > - return __alloc_pages_bulk(gfp, nid, nodemask, > - nr_pages, NULL, page_array); > + return alloc_pages_bulk_noprof(gfp, nid, nodemask, > + nr_pages, NULL, page_array); > } > > int vma_dup_policy(struct vm_area_struct *src, struct vm_area_struct *dst) > diff --git a/mm/page_alloc.c b/mm/page_alloc.c > index edb79a55a252..58c0e8b948a4 100644 > --- a/mm/page_alloc.c > +++ b/mm/page_alloc.c > @@ -4380,7 +4380,7 @@ static inline bool prepare_alloc_pages(gfp_t gfp_mask, > unsigned int order, > * > * Returns the number of pages on the list or array. > */ > -unsigned long __alloc_pages_bulk(gfp_t gfp, int preferred_nid, > +unsigned long alloc_pages_bulk_noprof(gfp_t gfp, int preferred_nid, > nodemask_t *nodemask, int nr_pages, > struct list_head *page_list, > struct page **page_array) > @@ -4516,7 +4516,7 @@ unsigned long __alloc_pages_bulk(gfp_t gfp, int > preferred_nid, > pcp_trylock_finish(UP_flags); > > failed: > - page = __alloc_pages(gfp, 0, preferred_nid, nodemask); > + page = __alloc_pages_noprof(gfp, 0, preferred_nid, nodemask); > if (page) { > if (page_list) > list_add(&page->lru, page_list); > @@ -4527,13 +4527,13 @@ unsigned long __alloc_pages_bulk(gfp_t gfp, int > preferred_nid, > > goto out; > } > -EXPORT_SYMBOL_GPL(__alloc_pages_bulk); > +EXPORT_SYMBOL_GPL(alloc_pages_bulk_noprof); > > /* > * This is the 'heart' of the zoned buddy allocator. > */ > -struct page *__alloc_pages(gfp_t gfp, unsigned int order, int preferred_nid, > - nodemask_t *nodemask) > +struct page *__alloc_pages_noprof(gfp_t gfp, unsigned int order, > + int preferred_nid, nodemask_t *nodemask) > { > struct page *page; > unsigned int alloc_flags = ALLOC_WMARK_LOW; > @@ -4595,38 +4595,38 @@ struct page *__alloc_pages(gfp_t gfp, unsigned int > order, int preferred_nid, > > return page; > } > -EXPORT_SYMBOL(__alloc_pages); > +EXPORT_SYMBOL(__alloc_pages_noprof); > > -struct folio *__folio_alloc(gfp_t gfp, unsigned int order, int preferred_nid, > +struct folio *__folio_alloc_noprof(gfp_t gfp, unsigned int order, int > preferred_nid, > nodemask_t *nodemask) > { > - struct page *page = __alloc_pages(gfp | __GFP_COMP, order, > + struct page *page = __alloc_pages_noprof(gfp | __GFP_COMP, order, > preferred_nid, nodemask); > return page_rmappable_folio(page); > } > -EXPORT_SYMBOL(__folio_alloc); > +EXPORT_SYMBOL(__folio_alloc_noprof); > > /* > * Common helper functions. Never use with __GFP_HIGHMEM because the returned > * address cannot represent highmem pages. Use alloc_pages and then kmap if > * you need to access high mem. > */ > -unsigned long __get_free_pages(gfp_t gfp_mask, unsigned int order) > +unsigned long get_free_pages_noprof(gfp_t gfp_mask, unsigned int order) > { > struct page *page; > > - page = alloc_pages(gfp_mask & ~__GFP_HIGHMEM, order); > + page = alloc_pages_noprof(gfp_mask & ~__GFP_HIGHMEM, order); > if (!page) > return 0; > return (unsigned long) page_address(page); > } > -EXPORT_SYMBOL(__get_free_pages); > +EXPORT_SYMBOL(get_free_pages_noprof); > > -unsigned long get_zeroed_page(gfp_t gfp_mask) > +unsigned long get_zeroed_page_noprof(gfp_t gfp_mask) > { > - return __get_free_page(gfp_mask | __GFP_ZERO); > + return get_free_pages_noprof(gfp_mask | __GFP_ZERO, 0); > } > -EXPORT_SYMBOL(get_zeroed_page); > +EXPORT_SYMBOL(get_zeroed_page_noprof); > > /** > * __free_pages - Free pages allocated with alloc_pages(). > @@ -4818,7 +4818,7 @@ static void *make_alloc_exact(unsigned long addr, > unsigned int order, > } > > /** > - * alloc_pages_exact - allocate an exact number physically-contiguous pages. > + * alloc_pages_exact_noprof - allocate an exact number physically-contiguous > pages. > * @size: the number of bytes to allocate > * @gfp_mask: GFP flags for the allocation, must not contain __GFP_COMP > * > @@ -4832,7 +4832,7 @@ static void *make_alloc_exact(unsigned long addr, > unsigned int order, > * > * Return: pointer to the allocated area or %NULL in case of error. > */ > -void *alloc_pages_exact(size_t size, gfp_t gfp_mask) > +void *alloc_pages_exact_noprof(size_t size, gfp_t gfp_mask) > { > unsigned int order = get_order(size); > unsigned long addr; > @@ -4840,13 +4840,13 @@ void *alloc_pages_exact(size_t size, gfp_t gfp_mask) > if (WARN_ON_ONCE(gfp_mask & (__GFP_COMP | __GFP_HIGHMEM))) > gfp_mask &= ~(__GFP_COMP | __GFP_HIGHMEM); > > - addr = __get_free_pages(gfp_mask, order); > + addr = get_free_pages_noprof(gfp_mask, order); > return make_alloc_exact(addr, order, size); > } > -EXPORT_SYMBOL(alloc_pages_exact); > +EXPORT_SYMBOL(alloc_pages_exact_noprof); > > /** > - * alloc_pages_exact_nid - allocate an exact number of physically-contiguous > + * alloc_pages_exact_nid_noprof - allocate an exact number of > physically-contiguous > * pages on a node. > * @nid: the preferred node ID where memory should be allocated > * @size: the number of bytes to allocate > @@ -4857,7 +4857,7 @@ EXPORT_SYMBOL(alloc_pages_exact); > * > * Return: pointer to the allocated area or %NULL in case of error. > */ > -void * __meminit alloc_pages_exact_nid(int nid, size_t size, gfp_t gfp_mask) > +void * __meminit alloc_pages_exact_nid_noprof(int nid, size_t size, gfp_t > gfp_mask) > { > unsigned int order = get_order(size); > struct page *p; > @@ -4865,7 +4865,7 @@ void * __meminit alloc_pages_exact_nid(int nid, size_t > size, gfp_t gfp_mask) > if (WARN_ON_ONCE(gfp_mask & (__GFP_COMP | __GFP_HIGHMEM))) > gfp_mask &= ~(__GFP_COMP | __GFP_HIGHMEM); > > - p = alloc_pages_node(nid, gfp_mask, order); > + p = alloc_pages_node_noprof(nid, gfp_mask, order); > if (!p) > return NULL; > return make_alloc_exact((unsigned long)page_address(p), order, size); > @@ -6283,7 +6283,7 @@ int __alloc_contig_migrate_range(struct compact_control > *cc, > } > > /** > - * alloc_contig_range() -- tries to allocate given range of pages > + * alloc_contig_range_noprof() -- tries to allocate given range of pages > * @start: start PFN to allocate > * @end: one-past-the-last PFN to allocate > * @migratetype: migratetype of the underlying pageblocks (either > @@ -6303,7 +6303,7 @@ int __alloc_contig_migrate_range(struct compact_control > *cc, > * pages which PFN is in [start, end) are allocated for the caller and > * need to be freed with free_contig_range(). > */ > -int alloc_contig_range(unsigned long start, unsigned long end, > +int alloc_contig_range_noprof(unsigned long start, unsigned long end, > unsigned migratetype, gfp_t gfp_mask) > { > unsigned long outer_start, outer_end; > @@ -6427,15 +6427,15 @@ int alloc_contig_range(unsigned long start, unsigned > long end, > undo_isolate_page_range(start, end, migratetype); > return ret; > } > -EXPORT_SYMBOL(alloc_contig_range); > +EXPORT_SYMBOL(alloc_contig_range_noprof); > > static int __alloc_contig_pages(unsigned long start_pfn, > unsigned long nr_pages, gfp_t gfp_mask) > { > unsigned long end_pfn = start_pfn + nr_pages; > > - return alloc_contig_range(start_pfn, end_pfn, MIGRATE_MOVABLE, > - gfp_mask); > + return alloc_contig_range_noprof(start_pfn, end_pfn, MIGRATE_MOVABLE, > + gfp_mask); > } > > static bool pfn_range_valid_contig(struct zone *z, unsigned long start_pfn, > @@ -6470,7 +6470,7 @@ static bool zone_spans_last_pfn(const struct zone *zone, > } > > /** > - * alloc_contig_pages() -- tries to find and allocate contiguous range of > pages > + * alloc_contig_pages_noprof() -- tries to find and allocate contiguous > range of pages > * @nr_pages: Number of contiguous pages to allocate > * @gfp_mask: GFP mask to limit search and used during compaction > * @nid: Target node > @@ -6490,8 +6490,8 @@ static bool zone_spans_last_pfn(const struct zone *zone, > * > * Return: pointer to contiguous pages on success, or NULL if not successful. > */ > -struct page *alloc_contig_pages(unsigned long nr_pages, gfp_t gfp_mask, > - int nid, nodemask_t *nodemask) > +struct page *alloc_contig_pages_noprof(unsigned long nr_pages, gfp_t > gfp_mask, > + int nid, nodemask_t *nodemask) > { > unsigned long ret, pfn, flags; > struct zonelist *zonelist; > -- > 2.43.0.687.g38aa6559b0-goog > -- Kees Cook
