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Diffstat (limited to 'mm/damon/paddr.c')
-rw-r--r--mm/damon/paddr.c130
1 files changed, 77 insertions, 53 deletions
diff --git a/mm/damon/paddr.c b/mm/damon/paddr.c
index 53a55c5114fb..07a8aead439e 100644
--- a/mm/damon/paddr.c
+++ b/mm/damon/paddr.c
@@ -18,7 +18,26 @@
#include "../internal.h"
#include "ops-common.h"
-static void damon_pa_mkold(unsigned long paddr)
+static phys_addr_t damon_pa_phys_addr(
+ unsigned long addr, unsigned long addr_unit)
+{
+ return (phys_addr_t)addr * addr_unit;
+}
+
+static unsigned long damon_pa_core_addr(
+ phys_addr_t pa, unsigned long addr_unit)
+{
+ /*
+ * Use div_u64() for avoiding linking errors related with __udivdi3,
+ * __aeabi_uldivmod, or similar problems. This should also improve the
+ * performance optimization (read div_u64() comment for the detail).
+ */
+ if (sizeof(pa) == 8 && sizeof(addr_unit) == 4)
+ return div_u64(pa, addr_unit);
+ return pa / addr_unit;
+}
+
+static void damon_pa_mkold(phys_addr_t paddr)
{
struct folio *folio = damon_get_folio(PHYS_PFN(paddr));
@@ -29,11 +48,12 @@ static void damon_pa_mkold(unsigned long paddr)
folio_put(folio);
}
-static void __damon_pa_prepare_access_check(struct damon_region *r)
+static void __damon_pa_prepare_access_check(struct damon_region *r,
+ unsigned long addr_unit)
{
r->sampling_addr = damon_rand(r->ar.start, r->ar.end);
- damon_pa_mkold(r->sampling_addr);
+ damon_pa_mkold(damon_pa_phys_addr(r->sampling_addr, addr_unit));
}
static void damon_pa_prepare_access_checks(struct damon_ctx *ctx)
@@ -43,11 +63,11 @@ static void damon_pa_prepare_access_checks(struct damon_ctx *ctx)
damon_for_each_target(t, ctx) {
damon_for_each_region(r, t)
- __damon_pa_prepare_access_check(r);
+ __damon_pa_prepare_access_check(r, ctx->addr_unit);
}
}
-static bool damon_pa_young(unsigned long paddr, unsigned long *folio_sz)
+static bool damon_pa_young(phys_addr_t paddr, unsigned long *folio_sz)
{
struct folio *folio = damon_get_folio(PHYS_PFN(paddr));
bool accessed;
@@ -62,23 +82,25 @@ static bool damon_pa_young(unsigned long paddr, unsigned long *folio_sz)
}
static void __damon_pa_check_access(struct damon_region *r,
- struct damon_attrs *attrs)
+ struct damon_attrs *attrs, unsigned long addr_unit)
{
- static unsigned long last_addr;
+ static phys_addr_t last_addr;
static unsigned long last_folio_sz = PAGE_SIZE;
static bool last_accessed;
+ phys_addr_t sampling_addr = damon_pa_phys_addr(
+ r->sampling_addr, addr_unit);
/* If the region is in the last checked page, reuse the result */
if (ALIGN_DOWN(last_addr, last_folio_sz) ==
- ALIGN_DOWN(r->sampling_addr, last_folio_sz)) {
+ ALIGN_DOWN(sampling_addr, last_folio_sz)) {
damon_update_region_access_rate(r, last_accessed, attrs);
return;
}
- last_accessed = damon_pa_young(r->sampling_addr, &last_folio_sz);
+ last_accessed = damon_pa_young(sampling_addr, &last_folio_sz);
damon_update_region_access_rate(r, last_accessed, attrs);
- last_addr = r->sampling_addr;
+ last_addr = sampling_addr;
}
static unsigned int damon_pa_check_accesses(struct damon_ctx *ctx)
@@ -89,7 +111,8 @@ static unsigned int damon_pa_check_accesses(struct damon_ctx *ctx)
damon_for_each_target(t, ctx) {
damon_for_each_region(r, t) {
- __damon_pa_check_access(r, &ctx->attrs);
+ __damon_pa_check_access(
+ r, &ctx->attrs, ctx->addr_unit);
max_nr_accesses = max(r->nr_accesses, max_nr_accesses);
}
}
@@ -125,10 +148,11 @@ static bool damon_pa_invalid_damos_folio(struct folio *folio, struct damos *s)
return false;
}
-static unsigned long damon_pa_pageout(struct damon_region *r, struct damos *s,
+static unsigned long damon_pa_pageout(struct damon_region *r,
+ unsigned long addr_unit, struct damos *s,
unsigned long *sz_filter_passed)
{
- unsigned long addr, applied;
+ phys_addr_t addr, applied;
LIST_HEAD(folio_list);
bool install_young_filter = true;
struct damos_filter *filter;
@@ -149,8 +173,8 @@ static unsigned long damon_pa_pageout(struct damon_region *r, struct damos *s,
damos_add_filter(s, filter);
}
- 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;
@@ -160,7 +184,7 @@ static unsigned long damon_pa_pageout(struct damon_region *r, struct damos *s,
if (damos_pa_filter_out(s, folio))
goto put_folio;
else
- *sz_filter_passed += folio_size(folio);
+ *sz_filter_passed += folio_size(folio) / addr_unit;
folio_clear_referenced(folio);
folio_test_clear_young(folio);
@@ -179,18 +203,19 @@ put_folio:
applied = reclaim_pages(&folio_list);
cond_resched();
s->last_applied = folio;
- return applied * PAGE_SIZE;
+ return damon_pa_core_addr(applied * PAGE_SIZE, addr_unit);
}
static inline unsigned long damon_pa_mark_accessed_or_deactivate(
- struct damon_region *r, struct damos *s, bool mark_accessed,
+ struct damon_region *r, unsigned long addr_unit,
+ struct damos *s, bool mark_accessed,
unsigned long *sz_filter_passed)
{
- unsigned long addr, applied = 0;
+ phys_addr_t addr, applied = 0;
struct folio *folio;
- 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;
@@ -200,7 +225,7 @@ static inline unsigned long damon_pa_mark_accessed_or_deactivate(
if (damos_pa_filter_out(s, folio))
goto put_folio;
else
- *sz_filter_passed += folio_size(folio);
+ *sz_filter_passed += folio_size(folio) / addr_unit;
if (mark_accessed)
folio_mark_accessed(folio);
@@ -212,32 +237,35 @@ put_folio:
folio_put(folio);
}
s->last_applied = folio;
- return applied * PAGE_SIZE;
+ return damon_pa_core_addr(applied * PAGE_SIZE, addr_unit);
}
static unsigned long damon_pa_mark_accessed(struct damon_region *r,
- struct damos *s, unsigned long *sz_filter_passed)
+ unsigned long addr_unit, struct damos *s,
+ unsigned long *sz_filter_passed)
{
- return damon_pa_mark_accessed_or_deactivate(r, s, true,
+ return damon_pa_mark_accessed_or_deactivate(r, addr_unit, s, true,
sz_filter_passed);
}
static unsigned long damon_pa_deactivate_pages(struct damon_region *r,
- struct damos *s, unsigned long *sz_filter_passed)
+ unsigned long addr_unit, struct damos *s,
+ unsigned long *sz_filter_passed)
{
- return damon_pa_mark_accessed_or_deactivate(r, s, false,
+ return damon_pa_mark_accessed_or_deactivate(r, addr_unit, s, false,
sz_filter_passed);
}
-static unsigned long damon_pa_migrate(struct damon_region *r, struct damos *s,
+static unsigned long damon_pa_migrate(struct damon_region *r,
+ unsigned long addr_unit, struct damos *s,
unsigned long *sz_filter_passed)
{
- unsigned long addr, applied;
+ phys_addr_t addr, applied;
LIST_HEAD(folio_list);
struct folio *folio;
- 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;
@@ -247,7 +275,7 @@ static unsigned long damon_pa_migrate(struct damon_region *r, struct damos *s,
if (damos_pa_filter_out(s, folio))
goto put_folio;
else
- *sz_filter_passed += folio_size(folio);
+ *sz_filter_passed += folio_size(folio) / addr_unit;
if (!folio_isolate_lru(folio))
goto put_folio;
@@ -259,29 +287,21 @@ put_folio:
applied = damon_migrate_pages(&folio_list, s->target_nid);
cond_resched();
s->last_applied = folio;
- return applied * PAGE_SIZE;
+ return damon_pa_core_addr(applied * PAGE_SIZE, addr_unit);
}
-static bool damon_pa_scheme_has_filter(struct damos *s)
-{
- struct damos_filter *f;
-
- damos_for_each_ops_filter(f, s)
- return true;
- 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;
struct folio *folio;
- if (!damon_pa_scheme_has_filter(s))
+ if (!damos_ops_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;
@@ -289,7 +309,7 @@ static unsigned long damon_pa_stat(struct damon_region *r, struct damos *s,
}
if (!damos_pa_filter_out(s, folio))
- *sz_filter_passed += folio_size(folio);
+ *sz_filter_passed += folio_size(folio) / addr_unit;
addr += folio_size(folio);
folio_put(folio);
}
@@ -301,18 +321,22 @@ static unsigned long damon_pa_apply_scheme(struct damon_ctx *ctx,
struct damon_target *t, struct damon_region *r,
struct damos *scheme, unsigned long *sz_filter_passed)
{
+ unsigned long aunit = ctx->addr_unit;
+
switch (scheme->action) {
case DAMOS_PAGEOUT:
- return damon_pa_pageout(r, scheme, sz_filter_passed);
+ return damon_pa_pageout(r, aunit, scheme, sz_filter_passed);
case DAMOS_LRU_PRIO:
- return damon_pa_mark_accessed(r, scheme, sz_filter_passed);
+ return damon_pa_mark_accessed(r, aunit, scheme,
+ sz_filter_passed);
case DAMOS_LRU_DEPRIO:
- return damon_pa_deactivate_pages(r, scheme, sz_filter_passed);
+ return damon_pa_deactivate_pages(r, aunit, scheme,
+ sz_filter_passed);
case DAMOS_MIGRATE_HOT:
case DAMOS_MIGRATE_COLD:
- return damon_pa_migrate(r, scheme, sz_filter_passed);
+ return damon_pa_migrate(r, aunit, scheme, sz_filter_passed);
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;
generated by cgit v1.2.3 (git 2.46.0) at 2025-10-03 18:44:24 +0000