linux-kernel - [RFC v2 3/7] mm/damon/vaddr: implement eligible

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Message-Id: <20250727201813.53858-4-sj@kernel.org>
Date: Sun, 27 Jul 2025 13:18:09 -0700
From: SeongJae Park <sj@...nel.org>
To: 
Cc: SeongJae Park <sj@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	damon@...ts.linux.dev,
	kernel-team@...a.com,
	linux-kernel@...r.kernel.org,
	linux-mm@...ck.org
Subject: [RFC v2 3/7] mm/damon/vaddr: implement eligible_report()

Implement eligible_report() operation for vaddr operation set.  It
checks the eligibility of the report based on the pid of the report and
the current monitoring target.

Signed-off-by: SeongJae Park <sj@...nel.org>
---
 mm/damon/vaddr.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/mm/damon/vaddr.c b/mm/damon/vaddr.c
index 87e825349bdf..a80cd34e5232 100644
--- a/mm/damon/vaddr.c
+++ b/mm/damon/vaddr.c
@@ -792,6 +792,12 @@ static int damos_va_migrate_pte_entry(pte_t *pte, unsigned long addr,
 	return 0;
 }
 
+static bool damon_va_eligible_report(struct damon_access_report *report,
+		struct damon_target *t)
+{
+	return report->pid == t->pid;
+}
+
 /*
  * Functions for the target validity check and cleanup
  */
@@ -954,6 +960,7 @@ static int __init damon_va_initcall(void)
 		.update = damon_va_update,
 		.prepare_access_checks = damon_va_prepare_access_checks,
 		.check_accesses = damon_va_check_accesses,
+		.eligible_report = damon_va_eligible_report,
 		.target_valid = damon_va_target_valid,
 		.cleanup_target = damon_va_cleanup_target,
 		.cleanup = NULL,
-- 
2.39.5