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 CD623414411; Fri, 11 Sep 2026 13:55:19 +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=1789134920; cv=none; b=ojycao06ZgvXdsopDI4+/pKqQIiEzVNVu/Z22C9jpEwhigTlvwtiwee+Pqh6+z23hdEsH4bLFcXDbAIQ1ihU9o2peZSwQZQNW2bmFhSk7laz3vFGmNEVEoZpHe1mVV4e8l3BGsW6T8c8IT5/nzn/uS0HYcCRkjbd+D/S7wAIyzQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789134920; c=relaxed/simple; bh=/s5M0my2VRrF4bdGS8mHHWAW5UTy+skM6R6wa2GBleg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=BrWq0M9GtdNSordKbYaPKsjfDluRebDQsLuHRdcEAakxk1rvpo3qzPnM2uAlOFIZK99w/kq0QXVYg8WonzfseNiyQQ08YqkNLY8/HaH4Kg4jd4F6zD8Gv0T+kexV4Q1+cp8j9OkiGtC+uMWUz+M5TYLjTCQAK78UY+ur96BxiTQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=VnxXKJyl; 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="VnxXKJyl" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7EBF91F00899; Fri, 11 Sep 2026 13:55:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1789134919; bh=b57SpIkbZ6AMBsE6RM4G3dlGWMR1DXMsNf+oP0yvVfg=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=VnxXKJyl5okYWsrJhnqQEEBR9G8H3GRrfqpJUyQQgtxJDYX9QWY5qajMHsnjOFdXz 4nwiKhr96HV4iMtCX9a7Z7NukPanS6dkcRWjrOla2EPvF3JuspFqZ0Uv8rL5TyzsrX 3+SK7mBxkmNxqsCrUCYYO9jX0FqPOYBEQh9RpTHjLDfjUqkoK+tgOfLXSi5I1tPfvR fkhmoEMXqOtO93NEp37Nk2EfNuZom0GvVyWrW2HlSPan77enuGebbBxV8HLZiLHNDy 4r9nhSHYiPZfdqFPX40447510SWhWgILFZcCEgWCaITW9UdR67uPv3PJmVGulvbiU1 /lBYDRCJosivA== From: SJ Park To: Andrew Morton Cc: SJ Park , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH v2 3/7] mm/damon/core: support probe_hits_wsum damos core filter Date: Fri, 11 Sep 2026 06:55:05 -0700 Message-ID: <20260911135510.96914-4-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260911135510.96914-1-sj@kernel.org> References: <20260911135510.96914-1-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 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