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mm/damon/paddr: report filter-passed bytes back for normal actions

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damon_operations->apply_scheme() implementations are requested to report
back how many bytes of the given region has passed DAMOS filter.  'paddr'
operations set implementation supports some of region-internal DAMOS
filter handling for normal DAMOS actions except DAMOS_STAT action.  But,
those are not respecting the request.  Report the region-internal DAMOS
filter-passed bytes back for the actions.

Link: https://lkml.kernel.org/r/20250106193401.109161-6-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
SeongJae Park 2025-01-06 11:33:50 -08:00 committed by Andrew Morton
parent b5bbe9c08f
commit 96f1971dab
1 changed files with 22 additions and 11 deletions
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33
mm/damon/paddr.c
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@ -243,7 +243,8 @@ static bool damos_pa_filter_out(struct damos *scheme, struct folio *folio)
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, struct damos *s,
unsigned long *sz_filter_passed)
{
unsigned long addr, applied;
LIST_HEAD(folio_list);
@ -272,6 +273,8 @@ 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);
folio_clear_referenced(folio);
folio_test_clear_young(folio);
@ -292,7 +295,8 @@ static unsigned long damon_pa_pageout(struct damon_region *r, struct damos *s)
}
static inline unsigned long damon_pa_mark_accessed_or_deactivate(
struct damon_region *r, struct damos *s, bool mark_accessed)
struct damon_region *r, struct damos *s, bool mark_accessed,
unsigned long *sz_filter_passed)
{
unsigned long addr, applied = 0;
@ -304,6 +308,8 @@ 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);
if (mark_accessed)
folio_mark_accessed(folio);
@ -317,15 +323,17 @@ static inline unsigned long damon_pa_mark_accessed_or_deactivate(
}
static unsigned long damon_pa_mark_accessed(struct damon_region *r,
struct damos *s)
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, s, true,
sz_filter_passed);
}
static unsigned long damon_pa_deactivate_pages(struct damon_region *r,
struct damos *s)
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, s, false,
sz_filter_passed);
}
static unsigned int __damon_pa_migrate_folio_list(
@ -449,7 +457,8 @@ static unsigned long damon_pa_migrate_pages(struct list_head *folio_list,
return nr_migrated;
}
static unsigned long damon_pa_migrate(struct damon_region *r, struct damos *s)
static unsigned long damon_pa_migrate(struct damon_region *r, struct damos *s,
unsigned long *sz_filter_passed)
{
unsigned long addr, applied;
LIST_HEAD(folio_list);
@ -462,6 +471,8 @@ 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);
if (!folio_isolate_lru(folio))
goto put_folio;
@ -481,14 +492,14 @@ static unsigned long damon_pa_apply_scheme(struct damon_ctx *ctx,
{
switch (scheme->action) {
case DAMOS_PAGEOUT:
return damon_pa_pageout(r, scheme);
return damon_pa_pageout(r, scheme, sz_filter_passed);
case DAMOS_LRU_PRIO:
return damon_pa_mark_accessed(r, scheme);
return damon_pa_mark_accessed(r, scheme, sz_filter_passed);
case DAMOS_LRU_DEPRIO:
return damon_pa_deactivate_pages(r, scheme);
return damon_pa_deactivate_pages(r, scheme, sz_filter_passed);
case DAMOS_MIGRATE_HOT:
case DAMOS_MIGRATE_COLD:
return damon_pa_migrate(r, scheme);
return damon_pa_migrate(r, scheme, sz_filter_passed);
case DAMOS_STAT:
break;
default: