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mm/damon/paddr: support addr_unit for DAMOS_STAT

Add support of addr_unit for DAMOS_STAT action handling from the DAMOS
operation implementation for the physical address space.

Link: https://lkml.kernel.org/r/20250828171242.59810-7-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Quanmin Yan <yanquanmin1@huawei.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: ze zuo <zuoze1@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

authored by

SeongJae Park and committed by
Andrew Morton 01e7ee33 ec1d5bab

+7 -6
+7 -6
mm/damon/paddr.c
··· 290 290 return damon_pa_core_addr(applied * PAGE_SIZE, addr_unit); 291 291 } 292 292 293 - static unsigned long damon_pa_stat(struct damon_region *r, struct damos *s, 293 + static unsigned long damon_pa_stat(struct damon_region *r, 294 + unsigned long addr_unit, struct damos *s, 294 295 unsigned long *sz_filter_passed) 295 296 { 296 - unsigned long addr; 297 + phys_addr_t addr; 297 298 struct folio *folio; 298 299 299 300 if (!damos_ops_has_filter(s)) 300 301 return 0; 301 302 302 - addr = r->ar.start; 303 - while (addr < r->ar.end) { 303 + addr = damon_pa_phys_addr(r->ar.start, addr_unit); 304 + while (addr < damon_pa_phys_addr(r->ar.end, addr_unit)) { 304 305 folio = damon_get_folio(PHYS_PFN(addr)); 305 306 if (damon_pa_invalid_damos_folio(folio, s)) { 306 307 addr += PAGE_SIZE; ··· 309 308 } 310 309 311 310 if (!damos_pa_filter_out(s, folio)) 312 - *sz_filter_passed += folio_size(folio); 311 + *sz_filter_passed += folio_size(folio) / addr_unit; 313 312 addr += folio_size(folio); 314 313 folio_put(folio); 315 314 } ··· 336 335 case DAMOS_MIGRATE_COLD: 337 336 return damon_pa_migrate(r, aunit, scheme, sz_filter_passed); 338 337 case DAMOS_STAT: 339 - return damon_pa_stat(r, scheme, sz_filter_passed); 338 + return damon_pa_stat(r, aunit, scheme, sz_filter_passed); 340 339 default: 341 340 /* DAMOS actions that not yet supported by 'paddr'. */ 342 341 break;