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b=ZqjPXFTWPDbcblMOIE6Sgw4srJbWNmKY2Il9NivI2Tb8cpHUU4kevV6PPYG2gZXZj iKnY3I38jvznAq/K6WkB1KEKsGwiSFiSe3afTclE7IUa6Xz/YZhgs/U/kRCY5zSKYw 3xz7vbdJFcrJNJaGLo/Y9/KmUP/ScbI5gmqcwGWjSiaXvBG3N7vjnFSXiR8HYoyu9I f4ar1rWG5ov/UaTQCKlFQyjXXN6z5ND98qheqQZdJ9WlCpVqkt+gyRpB38RWWEPq01 Zj0FDQfsAaohsspYSZBq7cH5BCZQgwHChxCihwRLqVJr1yCUCDQc6+UGN42Nq7tI6x mm/0Ys99QncmQ== From: SeongJae Park To: Cc: SeongJae Park , Andrew Morton , damon@lists.linux.dev, kernel-team@meta.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH 4/6] mm/damon/vaddr: impleement eligible_report() callback Date: Sun, 29 Jun 2025 13:14:41 -0700 Message-Id: <20250629201443.52569-5-sj@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250629201443.52569-1-sj@kernel.org> References: <20250629201443.52569-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 065EE80006 X-Stat-Signature: qnbem8b7fo4ubpre1uggmw6jg6diz1z1 X-HE-Tag: 1751228091-308697 X-HE-Meta: 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 ogxmnLeR kUyf0olauoFnt+c9n1zx8vveLaA2Lzjmxf9Hq04WO7wXaTbsqmHHSOOhgGWvCwlUm+JlszCeGjdii5BGdJ9VZC3HVZr+Ffzg7LxoO6vZIu4NCABHdgoTs7nluh1vetDsjRTgZq8bh4vJqNPYkUYXyuWF+Epq7l6m3aYqIjmEFRtT9o1eu6aaxbAsYC8lUl5hsUwmTCw8w/YJff2n5u9Jx//rnuqa3EXMZgwlLBGp+5XJFnSIFvWgOPMb/hjvtlgjTJqVWGcgANzB9qnIs2iLOCkHSkWgaMElj/M4LPFbWQ0pDGVivx90jR46XlQ== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: For [f]vaddr DAMON ops, access reports for virtual address space of a process that different from that for a given DAMON target shouldn't be used. Implement an eligible_report() callback for [f]vaddr that does the check. Signed-off-by: SeongJae Park --- mm/damon/vaddr.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/mm/damon/vaddr.c b/mm/damon/vaddr.c index 46554e49a478..9970f95585ed 100644 --- a/mm/damon/vaddr.c +++ b/mm/damon/vaddr.c @@ -610,6 +610,12 @@ static unsigned int damon_va_check_accesses(struct damon_ctx *ctx) return max_nr_accesses; } +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 */ @@ -710,6 +716,7 @@ 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 = NULL, .apply_scheme = damon_va_apply_scheme, -- 2.39.5