From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 88A8AC79FA0 for ; Mon, 7 Sep 2026 17:12:39 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 81F926B0096; Mon, 7 Sep 2026 13:12:29 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 75CCC6B009B; Mon, 7 Sep 2026 13:12:29 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 5AF456B009D; Mon, 7 Sep 2026 13:12:29 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0015.hostedemail.com [216.40.44.15]) by kanga.kvack.org (Postfix) with ESMTP id 303286B0096 for ; Mon, 7 Sep 2026 13:12:29 -0400 (EDT) Received: from smtpin09.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay02.hostedemail.com (Postfix) with ESMTP id BBF6A120251 for ; Mon, 7 Sep 2026 17:12:28 +0000 (UTC) X-FDA: 85187609976.09.1086436 Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf25.hostedemail.com (Postfix) with ESMTP id 2CD0FA0006 for ; Mon, 7 Sep 2026 17:12:27 +0000 (UTC) Authentication-Results: imf25.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=kC4AxmPQ; spf=pass (imf25.hostedemail.com: domain of sj@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=sj@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1788801147; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=lU6Anck8dGcwHo6Zz1AH/wx0RCbpjIZ1+t8NQz+I98U=; b=keEPhBZEKk0Pi7ncmSIYb0mczNkNAM5Zd9x4iQ58soxA3vm9wxOmCByMIt/tViFYIAFNRm uHiW3rYkLBKddr7k0PZ4ZkXnc4WDhPFfnUxm8zEZPC1MfU0FF8sAJAhTe2odDQQYWTInmd /fwgVs5jsz/YPZBIt0fJ1v2fUVXfHWo= ARC-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1788801147; b=Ar9D6A38QKSbUhH/2U2GykyCecTb1vCmGYv/jEZMzSFrlWAv9dkD5CynRxOGkLbRJxvjhG xb1vlpKmJC1ppsvjkaZGnp52kPiHS0o6B3Ob36pZSEkywgPLELSkuPcVKjEvIGPDSoa3Vn uxUWsZh7WhhhffuyPlGdYYKvI+yfswY= ARC-Authentication-Results: i=1; imf25.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=kC4AxmPQ; spf=pass (imf25.hostedemail.com: domain of sj@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=sj@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id C3883601DE; Mon, 7 Sep 2026 17:12:26 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 552B81F00A3F; Mon, 7 Sep 2026 17:12:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788801146; bh=lU6Anck8dGcwHo6Zz1AH/wx0RCbpjIZ1+t8NQz+I98U=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=kC4AxmPQiOZ3aJ+kyB9vrnbNxo6iJlrY/iUYv1AXldMH4C/fJN36qQrI2ES9RCnXE SQFcvPOjzZlAdzrkPSsR0vsHmP13qCTg/bm8g4IbjuJ6optJOOgxqEIVbFjwScHaJ0 GmxsBnmUi8ewFCxfkyiuQ7/2FGOYMF+zaduMew5hsmbZGgP/kuK6oWjbzkHGl19yxU uJu9HlasDNMRUoxYy3G1mU6wL/ttmYQyoIxLNjyW4OswjL2/lZDFxNaTN4Gr2npOBk c6BFdAAbvggDGBZ7v/TOEMJ1ovF+cnMCo1UODwHrVWVH0ZlV5a7c0mUgB5/QxiiIkg 34yqqnFgQwzvQ== 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 3/7] mm/damon/core: support probe_hits_wsum damos core filter Date: Mon, 7 Sep 2026 10:12:12 -0700 Message-ID: <20260907171218.101430-4-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260907171218.101430-1-sj@kernel.org> References: <20260907171218.101430-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 2CD0FA0006 X-Stat-Signature: 4515nd8z5nodfu3b639m3i8hq6rid9cm X-HE-Tag: 1788801147-268819 X-HE-Meta: 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 nmZNujNW KYzBjBB4WjvP7oGSZ1YNGZL88F6HfkaWRAETbZ8kTYaLH+FGJsf3FKMYRwi6mnn1lyurExht6tG3XxeiPIMpd5YwJPOMM6SC+wk0DsytN+xjATTOZImSJg1v7jCIX+jskWGQrDja7aIWYDeJ8uoRHbnXuw8QHbOsyr9JKG6cQScYdxofBVTkunJCregMQimd6VA5yWta+42Z6JkvjCrCfQyOTN34BfZ0ja9fQO3KYL37TkOIQOYAOHoPRd07LWovgu/pfHQB9a++CQhUKUJBZuUxi5w== 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 30af5bbcc90e7..98efc6e2876f4 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