From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 811F448CD54; Thu, 10 Sep 2026 14:19:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789049942; cv=none; b=RErVGnjxY7S7JgmwOEcHfEuwxXajj/SnEunZYWeK37caBDugRSePakwmJHVX3zYInCjAt3J2N4I0y5cuvNCbnSAqDb44ZXOTt+lGKObOrzFXxDhBG8FRUtnoRTWh1vOBjjCSp9+3WA43jJt1fAQygGyaiegDVvQSf2bcgdxjpTM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789049942; c=relaxed/simple; bh=9viLNo/cpATQLCGYnUYgc0TT7fNMscirpui8mxLcXDU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=omlGGDmn7MXWTnR12bMdBXuPJJO8whLmX9uhe+UTIcFQgsaMZv70pbSnC3EAp9Y+MiKzCY8PZ2whAxMmv8MqKEcMdhQoT588rbpfigv9xB5jYW3zEptXbEg1GxyOWKeXHHXQ497YReOAUhDn3u95Z6CZos6jNjytz3jAl93eqh8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=XeRVgxyi; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="XeRVgxyi" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1E98C1F00893; Thu, 10 Sep 2026 14:19:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1789049941; bh=PWrMrM3f3WHWIPiBc1do7PEyYjGSCGGW8JjOmMYVBv8=; h=From:To:Cc:Subject:Date:In-Reply-To:References; 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> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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