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b=dml+ayEr24UUZMmalGx6HoHSRg65X9HJ6baZH7/ZPWpn7t/kf9eT1Eg8MJY2m5k3O 8fn/FqG8+5CpIyntoIkqMeztKJeGOel0ka+hOpzxFu4JaCsvntcoW0MxTpBvb/pBb0 SU0AWPKOZFLHzJEDsjjBBpIc8kvrif2l51bgHSQ5Kx+wWnN7qmtqwQPJZJoaTH5gaX zNkCJyrDTiVNBE8d/JQoJnuR4Jr2wzNisZO+DN/vMz2y+10mSlSf4OlD0PMSndARDu U5/+O1WWZ4vpDyeYZtVqsi1VEmwzXMVQPEpuemy+W9bblhZuDEvyjeb5Ks+wG7irQo r15TYuhcXAHOQ== From: SJ Park To: Andrew Morton Cc: SJ Park , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 5/5] mm/damon/vaddr: support pgidle_unset probe filter type Date: Sun, 6 Sep 2026 11:44:15 -0700 Message-ID: <20260906184417.96621-6-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260906184417.96621-1-sj@kernel.org> References: <20260906184417.96621-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: 4AD651C0006 X-Stat-Signature: j5cqp46xw5gn94dezixgwu9qgzcsexw7 X-HE-Tag: 1788720267-463606 X-HE-Meta: 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 lDWjGh3s cwTVXUcz30KkWQA/mch1xVPlw5Jn2zG43hgRPHdZOfbrYNUsSON6Pf6/1fqWxL9wBGFHsLLwrkAmHCNEgVNx3qRziLN1OCYguBWGQUSEdsm6fp6T6uPA9G2GFpx7oYQBgk6+eOvzd7K6erVJr9PVCG0Xn47XFd7QmChR73ntz3xvPZ9O0SpPvY8EZxBWoAhO4xzIotjTi3IdR9dhGSMVh+6lF8If85iub9zP7M6UzTv84BZAHQNATFT6QIHebXGZQvmdK2eSAwm/4E+qfLyewdsHnOQ== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: DAMON virtual address space operation set (vaddr) does not support pgidle_unset probe filter type. Add the support. Signed-off-by: SJ Park --- mm/damon/vaddr.c | 55 ++++++++++++++++++++++++++++++++++++++++++------ 1 file changed, 48 insertions(+), 7 deletions(-) diff --git a/mm/damon/vaddr.c b/mm/damon/vaddr.c index 45239f05e113b..9a38dc89a156e 100644 --- a/mm/damon/vaddr.c +++ b/mm/damon/vaddr.c @@ -522,13 +522,49 @@ static void damon_va_prep_probes(struct damon_ctx *ctx, bool set_samples) } } -static bool damon_va_filter_pass(struct folio *folio, struct damon_probe *p) +static bool damon_va_young_addr(struct folio *folio, pte_t *pte, pmd_t *pmd, + struct mm_struct *mm, unsigned long addr) +{ + bool young = false; + + if (pte) + young = pte_young(*pte); + else if (pmd) + young = pmd_young(*pmd); + young = young || !folio_test_idle(folio) || + mmu_notifier_test_young(mm, addr); + return young; +} + +static bool damon_va_filter_match(struct damon_filter *filter, + struct folio *folio, pte_t *pte, pmd_t *pmd, + struct mm_struct *mm, unsigned long addr) +{ + bool matched = false; + + switch (filter->type) { + case DAMON_FILTER_TYPE_PGIDLE_UNSET: + if (!folio) + matched = false; + else + matched = damon_va_young_addr(folio, pte, pmd, mm, + addr); + break; + default: + return damon_ops_filter_match(filter, folio); + } + return matched == filter->matching; +} + +static bool damon_va_filter_pass(struct folio *folio, struct damon_probe *p, + pte_t *pte, pmd_t *pmd, struct mm_struct *mm, + unsigned long addr) { struct damon_filter *f; bool pass = true; damon_for_each_filter(f, p) { - if (damon_ops_filter_match(f, folio)) { + if (damon_va_filter_match(f, folio, pte, pmd, mm, addr)) { pass = f->allow; break; } @@ -543,13 +579,15 @@ struct damon_va_probe_walk_private { }; static void damon_va_probe_folio(struct damon_ctx *ctx, - struct damon_region *r, struct folio *folio) + struct damon_region *r, struct folio *folio, + pte_t *pte, pmd_t *pmd, struct mm_struct *mm) { struct damon_probe *probe; int i = 0; damon_for_each_probe(probe, ctx) { - if (damon_va_filter_pass(folio, probe)) + if (damon_va_filter_pass(folio, probe, pte, pmd, mm, + r->sampling_addr)) r->probe_hits[i]++; i++; } @@ -574,7 +612,8 @@ static int damon_va_probe_pmd_entry(pmd_t *pmd, unsigned long addr, folio = vm_normal_folio_pmd(walk->vma, addr, pmde); if (!folio) goto huge_out; - damon_va_probe_folio(priv->ctx, priv->r, folio); + damon_va_probe_folio(priv->ctx, priv->r, folio, NULL, &pmde, + walk->vma->vm_mm); huge_out: spin_unlock(ptl); @@ -591,7 +630,8 @@ static int damon_va_probe_pmd_entry(pmd_t *pmd, unsigned long addr, folio = vm_normal_folio(walk->vma, addr, ptent); if (!folio) goto out; - damon_va_probe_folio(priv->ctx, priv->r, folio); + damon_va_probe_folio(priv->ctx, priv->r, folio, &ptent, NULL, + walk->vma->vm_mm); out: pte_unmap_unlock(pte, ptl); @@ -615,7 +655,8 @@ static int damon_va_probe_hugetlb_entry(pte_t *pte, unsigned long hmask, folio = pfn_folio(pte_pfn(entry)); folio_get(folio); - damon_va_probe_folio(priv->ctx, priv->r, folio); + damon_va_probe_folio(priv->ctx, priv->r, folio, &entry, NULL, + walk->vma->vm_mm); folio_put(folio); out: -- 2.47.3