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b=iuAe1Q0YUHJimYcpz18LK6OjYduQt4A9/RkIC4nCX5SUrQ/xXI1A5ah8/fTFhs2nv qSCIGjcGC/gtG7gBvdVZO6/Z2I3ZnvCz5FINszIOgN/QC3r7x4goXa5Gfz7yAZoB3s dFsPQ3qFss+48nKU1mbn5RBBe8m+0KcYTVNV2myFIxKzLNpi2uY55MX887aWyAn0ef loW/QBfP4RckCvfZsyhnIi6F40Pl1X8aCAVAtraGZsizCn0ZPMO65FDaEQ6KJOdD7Q OktxLiAbHM5nL95lPb8v+6/BKUx/WqeuZX1qar8Z2xhwe0RaOHXO4yuGf3Zo8jtH6d 2IM4hAdMjfveA== 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 v2.1 3/7] mm/damon/core: support probe_hits_wsum damos core filter Date: Wed, 9 Sep 2026 21:03:14 -0700 Message-ID: <20260910040319.147037-4-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260910040319.147037-1-sj@kernel.org> References: <20260910040319.147037-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Stat-Signature: uze6tg7inbtcq1wn7sxicdmmpno3wg34 X-Rspam-User: X-Rspamd-Queue-Id: 352BAC0009 X-Rspamd-Server: rspam03 X-HE-Tag: 1789013009-236633 X-HE-Meta: U2FsdGVkX19W2iu+HS0gvSA8gl/57b3m5e7okwWEga0KcXMD4It/5uPi8EGvV1iXInw/73Ip8DL42kWkRLhsgiJygIVQNJG81zY2fXoDxZBfjXfKZtznybEo7S7+C6QOXWd32oE6qg0DU8fF2bXv4xwqlWTksne3zdGxlbNRtBfUV+/htRHy2ACPT4cnquzF0/1FYtfyaQrSCl/k5gFgCRDinThDIct+MWOFKN3LS3cfZ1w0hamxvGF1FFK78tNsGI3mTzhvvpw2YhNHBBXMdl/+fAYu/Uc7jgm+mMGVbMPF8ckSwRane6UYQz6rxQTOitYHHCvlyULeQJ5rO8t2mWIpFF9PT5RvEBx9UZbyCIlSmIRSg2s3y0Y/DpVXUxRUP/aQcmAMDTXInhFjUAaTI/suD107PLHiN/OgoUtxMHiFT7QgIDCQMIdeqAie3gcNGDL2ISLHKO8VtQuqBEp8GhOZxwvCz4YD7aREUtY4at+/LhnWq0Lm/S21TgqGegeLJypGm57gGzxcZN96OLjXlpiutj04Msh7kFvsNZ7YsBm5XmrJk8rdvN52dOBjPX1UQQ2hcWlpNq+4mNpLKr9Bh8Nv836ccqW2Ms4NdwURxnmx/heDZtzLorFcWh6knaIgGx3iuAT7eqoQo1zXUckBFHIh/FR4vpgNYdRH7oG45GjrXALeD0luHCgnt5RDnGxH27N9EiQbZ+bPwenB1c0g6jIo98sils0EFmpSHPJB57sw5ftZ4+lliR+vCjhg64j7X1p9Zyss2FveqyKwP7W2dI6UuGo5MGWFlsbZLZXIOG1SeFgHZzDJLKtsrDPGOWb34ru+JBo+YhoMWZSuLSgAbY+kARK0yKjafoUwiVwNqOaazRT0NbuJg9E/TRtHTxGbirkypbvAaMN+5IEJ/bacAh6odOLwrVCJvZRPevSZVypy4qJS+h2ZD2/zwJPCV5LHwhuFJ4NKNY/rfRplklx hKu5Fs56 kfzneXblSGxo0ZJKahSGXlckDtloAhr0Fc0mzmr/Abo1rlkt1+1RaCL1wymdZIQquQkphKTCDI0yX/XKk4A4VPEwgloC55ZF2xYM4bdqhJ1n8gVFmJkLnCU4t+KliocBEdbBL0YIZITtxfHYaIj57piabOgBCN/1MKBWvXe2UnfAYpE1Y+CaPGlaGqECCSp/bv9QsBcPwPzz7E/lXYuGZU8snwbPYB7OeGeKhSdxsMtgmnQalpXX83pvDwwZkAYZ7YkolStRfij64oExKh6WILvwThg== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Implement probe_hits_wsum DAMOS core filter support in the core layer. Make three small changes for the support. First, update damos_filter_for_ops() to treat probe_hits_wsum filter as core filter. Second, Update destination damos_filter->range_{min,max} for probe_hits_wsum type damos filter commits. Third, extend damos_filter_match() to handle probe_hits_wsum type filter. Calculate the weighted sum of the given region and compare it with the given filter's target weighted sum range. Signed-off-by: SJ Park --- mm/damon/core.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/mm/damon/core.c b/mm/damon/core.c index 50e0f9407db2b..0c98f7e267d07 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -658,6 +658,7 @@ bool damos_filter_for_ops(enum damos_filter_type type) switch (type) { case DAMOS_FILTER_TYPE_ADDR: case DAMOS_FILTER_TYPE_TARGET: + case DAMOS_FILTER_TYPE_PROBE_HITS_WSUM: return false; default: break; @@ -1332,6 +1333,10 @@ static void damos_commit_filter_arg( case DAMOS_FILTER_TYPE_HUGEPAGE_SIZE: dst->sz_range = src->sz_range; break; + case DAMOS_FILTER_TYPE_PROBE_HITS_WSUM: + dst->range_min = src->range_min; + dst->range_max = src->range_max; + break; default: break; } @@ -2510,7 +2515,7 @@ static bool damos_filter_match(struct damon_ctx *ctx, struct damon_target *t, bool matched = false; struct damon_target *ti; int target_idx = 0; - unsigned long start, end; + unsigned long start, end, wsum; switch (filter->type) { case DAMOS_FILTER_TYPE_TARGET: @@ -2545,6 +2550,11 @@ static bool damos_filter_match(struct damon_ctx *ctx, struct damon_target *t, damon_split_region_at(t, r, end - r->ar.start); matched = true; break; + case DAMOS_FILTER_TYPE_PROBE_HITS_WSUM: + wsum = damon_probe_hits_wsum(r, false, true, ctx); + matched = filter->range_min <= wsum && + wsum <= filter->range_max; + break; default: return false; } -- 2.47.3