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b=XeRVgxyixHufqqb7P/t2eodGXN/9vTEqu3GKl7K33f+WK9+KgwQtezZTip4wimx5G vyHHRWf1ooGXazAwjYavRcGa/pNX5WqXp5fGtv7sWtDdIYfjwHoG/v5Tw2qFyRH3CT W5khMH+4iC3x3MBnlEyQw8de3MnV8tzfx6vR21OzNegXqn9tZP6wAsY6KBfEX8qSCq nR0fbUoSv7b5+zXRE03mKl/o5OQcim9w3ldTkJ096g6YR4jd3uNZGGwd8s4hDgZbOZ uNNoO3Od/UHfUGbHVhylzoZBDUprdXzpizGc1dx6MH0Uj7cbReCYnOiPsF4m4GB+jh Rb1PgVve+WMQA== From: SJ Park To: Andrew Morton Cc: SJ Park , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 3/7] mm/damon/core: support probe_hits_wsum damos core filter Date: Thu, 10 Sep 2026 07:18:43 -0700 Message-ID: <20260910141849.170896-4-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260910141849.170896-1-sj@kernel.org> References: <20260910141849.170896-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 0139E120008 X-Stat-Signature: c8zuidomyjph1gafp9ubmbfg93hdx837 X-Rspam-User: X-HE-Tag: 1789049941-195907 X-HE-Meta: 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 8syHTWcv fHgfKumKHPy12gHaUSo+sAX57wc127gY38gy/Kb/ErL3j1X4s1ft9PHS1AM0yxBDlmef6XdVFxDmdIm7X88T9LGafadHzpmd+jMgyakEPKGvqFUwHmj/U7wp6n4snl0ZuxeiwncPLj3bHXU32pohoTJBsSop6+6bSiExAZflbRn0wwd9zoGyvElGh5X1OLlqfCUhW3DcHXcDx9h4r8ni+Yej6sdC1HxqO+h0ZFi8Zon9T8/I9sw7cZbbTL3+qxbQ145cm116K+bXZCfu2ixQJGHZGig== 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 e9630f41e51fe..d9d56f4be1a97 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