[RFC PATCH 06/10] mm/damon/paddr: support addr_unit for DAMOS_STAT

SeongJae Park
2025-04-16T04:26:03Z

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

Signed-off-by: SeongJae Park <sj@kernel.org>
---
mm/damon/paddr.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/mm/damon/paddr.c b/mm/damon/paddr.c
index 20955eefcdbf..0d6491159a04 100644
--- a/mm/damon/paddr.c
+++ b/mm/damon/paddr.c
@@ -562,18 +562,19 @@ static bool damon_pa_scheme_has_filter(struct damos *s)
return false;
}

-static unsigned long damon_pa_stat(struct damon_region *r, struct damos *s,
+static unsigned long damon_pa_stat(struct damon_region *r,
+ unsigned long addr_unit, struct damos *s,
unsigned long *sz_filter_passed)
{
- unsigned long addr;
+ phys_addr_t addr;
LIST_HEAD(folio_list);
struct folio *folio;

if (!damon_pa_scheme_has_filter(s))
return 0;

- addr = r->ar.start;
- while (addr < r->ar.end) {
+ addr = damon_pa_phys_addr(r->ar.start, addr_unit);
+ while (addr < damon_pa_phys_addr(r->ar.end, addr_unit)) {
folio = damon_get_folio(PHYS_PFN(addr));
if (damon_pa_invalid_damos_folio(folio, s)) {
addr += PAGE_SIZE;
@@ -701,7 +702,7 @@ static unsigned long damon_pa_apply_scheme(struct damon_ctx *ctx,
return damon_pa_alloc_or_free(r, scheme, false);
#endif
case DAMOS_STAT:
- return damon_pa_stat(r, scheme, sz_filter_passed);
+ return damon_pa_stat(r, aunit, scheme, sz_filter_passed);
default:
/* DAMOS actions that not yet supported by 'paddr'. */
break;
--
2.39.5