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bh=55qSAyG5lbRxWMFpgyshAGzR1uB1VLHtbYjVj1MXVYk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pATG9OqSqP99RXBWGY7fJfLyZtQHGWBxHulVCPM+ydODfXlD5TnhqK+S5lzerqbZp ekZhX9dMxDZRFfUaHT5/AvN0sqkS6YKZcSOE0NvI5G68DU6bsdO/BIMidyCJY5f5uD 7Vk+6Q1+zj24SDQCehMBMTSI5cwHPpdF896WJoTaJl0qTwmmI0QgVvTKPuzlG2xCn0 ziYlMA33EZHcUSw0rkmrwUQHl+DvAYvJdYA1LgqQtpp7+g2Bk8Z30yh6aCrZ5aB4dQ PxFDxYAGQxvIu08k+g0FHN14/31RkH8JClxSmy8if7CD2SAFIcNFLbMAxaYadwxx9A H0blcK8k17xZw== From: SeongJae Park To: Cc: SeongJae Park , Andrew Morton , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH v3 14/37] mm/damon/core: report access origin cpu of page faults Date: Sun, 7 Dec 2025 22:29:18 -0800 Message-ID: <20251208062943.68824-15-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20251208062943.68824-1-sj@kernel.org> References: <20251208062943.68824-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 341288000F X-Rspam-User: X-Rspamd-Server: rspam12 X-Stat-Signature: gofsunnnae8fty6t89fuuxani74jp1g5 X-HE-Tag: 1765175411-431451 X-HE-Meta: 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 Kfz937Y8 Gp3a52kDn8nHggbIwqhJrmqfSHfrqCt7TZi2137AX0ImOOvUp2mCy2GVh7xLx30vGCBw9PbHIsthm3ttfUlqXYzZqTM3XNHsRCJi4BliWVSBAuyGFLnWi+julPx98tUmGwZi73PCCNpo1JwUofuX/ctuobTlF/sYp+5q0e0OQ9NwwoBuOy2S0zP2x/kbPq0qu4tUqPqenN935+cME9V0nYfHzDOeupRnOFZTSBTfEJCE7hsAMZzFZcJag2auddsBIQhKT 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: The CPU that executes the page fault event reporting function is the CPU that made the access. Report the origin CPU of the access. Signed-off-by: SeongJae Park --- mm/damon/core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/damon/core.c b/mm/damon/core.c index a14754a47c7f..d2f842d8afd2 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -1585,6 +1585,7 @@ void damon_report_page_fault(struct vm_fault *vmf, bool huge_pmd) { struct damon_access_report access_report = { .size = 1, /* todo: set appripriately */ + .cpu = smp_processor_id(), }; if (huge_pmd) -- 2.47.3