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b=IGEvX9ldaMMuYssG9Up8AFd3AOZseOjwO7bbkT9gJrWDd0K71El2q+i9XP8jLCJO3 XLwByoBp+S3VlZc5+quQauusWRX41PLzYKj4e1PSiaaK39TQ5bQkI3vHUM7F06AkFr frW8vGtNxnq3Tpg/oVK1jRpROD9YWVcUXtG80wbWk74WQ9bGham0AeKIpVGBWbVdDX i238eYqva+YsYQIaj2CCv2xqEY3r7AhYqPTXp5iZUnm/BNLsTZbSfJJZq1zFIA4IRE qzHrZCbOW3mQqKyaTNVyzWil+wesGzzLPCcDY9jOHGsTlY5jYhyan2MeDW45pl8166 1xNlsc3nbtk2g== From: SJ Park To: Cc: SJ Park , Andrew Morton , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH v1.1 06/16] mm/damon/paddr: respect return_max_wsum Date: Mon, 6 Jul 2026 07:19:00 -0700 Message-ID: <20260706141912.88445-7-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260706141912.88445-1-sj@kernel.org> References: <20260706141912.88445-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 1E7274000B X-Stat-Signature: 1fnkrbe3bnmgz33j7qnxrjwn1oiouwur X-HE-Tag: 1783347563-111231 X-HE-Meta: U2FsdGVkX1+raIDg4OBx4QET4GNTQcJm2jQyHEUCcZkWfTm24C69GSUuJFq4flBEWeqnuB+PpdwGPdNGmuDpq1b349bY17eWxbu7yDNpdBvzjhCqp0XxxlCI9dU440e75DQLiqHmgwt5kedLG+dFFKa6c+//2oMofWKY02bVTNXT5jWoy5pkabdsrp63Q6ee365RB3llysMBv3hnw3LQivlSiXdPu6ipsSZWQHj7OclK9ad8mCHSd7O/o43h6myY6gaRwKPQuHtUz9xfi+Z8dUwM8lAEvxB1Qqu8biDljmRmgsE0kl2MT+t5AE7XkedOtN0mHLxWLyNvS9J7s/8NPaX3wOVKGK4U8U/nfRXEVCHzG8EXScK9B6v+nBo/NrH6PRY5bTSRsYtkN8whfMiTFfDotnteYtmjamjx099lrBgJjjc5qc/o5mXOd2TO3Ys770qYFiWkH7ms5wdctdgH5u/MH+IqzWM7DCwGBgjhncdFWH9a6GV31gC/wPKv3rVuX/rhV46Y4yjhzI7pxW4o9FbXvjQhv7OTyggCWfCHufhcoq+Dx6IrcvxszhW4C/CRGjIKUR5lJdwiWYTuGI0pEvrISKrrqE20RI3g94Ba4MT7vUoVzjaHG8sYQINAGECTjln1ySSO++bPOHu03MCUzd8WD1bdKTCf1bA+XLvjHDHNwzdf+Uqlpz1Lj4CZizFl8gRiaC8j3MX/PZ9t32HkDX/VayLmIEcs1pc2cQynipuxolc+Y05hRpyWn3cxuV1uBrNoK/zhqrGVfg6IXT1stIau+d5VEB0/YFtDYQu7mxtk6MChl9pNpbOb8NbY6Cmjo2RLTtyTVtpzzZ2BAIAXJsUCthDbvr/ItnwznH9klofZFdc/A42dZHwhccVvBOchpHWgQHyHNCqdfxF0mHcxVZgFvv5BtD9UnSQtr4QY0E791T106fKJHMWqmTyUV9Z9q5ka1bduXw86ebh06qP N3CqYT46 /jO+cDJ5G3802ThkHMBfdldMmL1UOF2cyNWf5FbPoiaQ/vDhCW4wxi5QHgj1oU6rRf39eL1Ke3u3z6PyGVi9/8KJalhEfrOGvOMgepFSV5MswbZextu5vHKxEEbFHoYyYwobiH5ustHZyxeP6cD2laXBF6C8IRN+GLvLWfxfW+qhcpTXfX6jKO3YgFWTGTdZ0KC66e32F3CUw0iOh/uByzpU343RdUzjxT/S9bASJLV572+SXW3zhodvCc8gjcjHSgTk1HpD2dTRXk19sacHxSSuGgg== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: apply_probes() ops implementation in DAMON_PADDR is ignoring return_max_wsum. Respect it. Signed-off-by: SJ Park --- mm/damon/paddr.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/mm/damon/paddr.c b/mm/damon/paddr.c index 3eba3564a31fc..b85f88a7a38f4 100644 --- a/mm/damon/paddr.c +++ b/mm/damon/paddr.c @@ -172,6 +172,7 @@ static unsigned int damon_pa_apply_probes(struct damon_ctx *ctx, struct damon_target *t; struct damon_region *r; struct damon_probe *p; + unsigned int max_wsum = 0; damon_for_each_target(t, ctx) { damon_for_each_region(r, t) { @@ -182,7 +183,6 @@ static unsigned int damon_pa_apply_probes(struct damon_ctx *ctx, if (set_samples) r->sampling_addr = damon_rand(ctx, r->ar.start, r->ar.end); - pa = damon_pa_phys_addr(r->sampling_addr, ctx->addr_unit); folio = damon_get_folio(PHYS_PFN(pa)); @@ -193,9 +193,12 @@ static unsigned int damon_pa_apply_probes(struct damon_ctx *ctx, } if (folio) folio_put(folio); + if (return_max_wsum) + max_wsum = max(damon_probe_hits_wsum(r, false, + ctx), max_wsum); } } - return 0; + return max_wsum; } /* -- 2.47.3