From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 1E3341E0E14; Mon, 6 Jan 2025 19:34:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736192056; cv=none; b=ZK8K6PrQW+urd1XrNlFdt/Wbcmn3VWD+kp+Momu10N0bUQlkjWmOI04ORDg6GVTbl2KDZoVRWN5QA1W4br4Hvz8iT2htdnPilzeW+5nFPzQ0ujhM/ayk8n7chMHZtlqHwTh4QWqSq1elWXmruaLXimoML1/NzHCYtZQU31x48gs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736192056; c=relaxed/simple; bh=2LH1SS+mcAmlUxCwzoptXsvLS0Q9wTfZdyaAciByRN8=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=iMn+Fn+8BDSl287svNebLT8Ll6pUlx20y21OZE4Kk75seqTSgOYejIi/4BlZN+CUN0Gxq86CNXXNUF6Ty7aEmlrTZV9zYFoP1b9A83xgm5k77wf4sAbZCMmLwI5RlczIZyepOXSK6r1xqVqT91QRmXyRMtTbSNH5GNC0lyWFU1A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=gAYIhQk+; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="gAYIhQk+" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 66CE4C4CED2; Mon, 6 Jan 2025 19:34:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1736192055; bh=2LH1SS+mcAmlUxCwzoptXsvLS0Q9wTfZdyaAciByRN8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gAYIhQk+ZNsHH1AnWzsQzrhkNcdktCCWYi8JwOkrZT2ipR6JsnMpZyThIUdGJwJJ2 m/6qUBaDjKqS5CPI3GgUipsWQJVyTRunXGG7Fi89wrukN65NVpMsLW31CPl+qnHozZ GkvF8Vx1AJIjOP0tsLZtYWeWpcPtc/BTrTkEyDlCeeR39HCLh8u4jQdIie0GAXynQC yNg8FYT63DxRJa5SY7VV/4CVV/0ELLoPG1zaTNXYuPGa+uaCSSWHAqxbrEIh0+5ZwI c3ZyQq5uE1liDUXvdmCx443KSGnIyAm6JvOsVQNTgsNepYr0TPkMc2rr+0ZSy/bziT Y3gfvMfiLQJ6A== From: SeongJae Park To: Andrew Morton Cc: SeongJae Park , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 07/16] mm/damon/core: implement per-scheme ops-handled filter-passed bytes stat Date: Mon, 6 Jan 2025 11:33:52 -0800 Message-Id: <20250106193401.109161-8-sj@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250106193401.109161-1-sj@kernel.org> References: <20250106193401.109161-1-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 a new per-DAMOS scheme statistic field, namely sz_ops_filter_passed, using the changed damon_operations->apply_scheme() interface. It counts total bytes of memory that given DAMOS action tried to be applied, and passed the operations layer handled region-internal filters of the scheme. DAMON API users can access it using DAMON-internal safe access features such as damon_call() and/or damos_walk(). Signed-off-by: SeongJae Park --- include/linux/damon.h | 3 +++ mm/damon/core.c | 6 ++++-- 2 files changed, 7 insertions(+), 2 deletions(-) diff --git a/include/linux/damon.h b/include/linux/damon.h index da003173210f..2a93dbe06ecc 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -286,6 +286,8 @@ struct damos_watermarks { * @sz_tried: Total size of regions that the scheme is tried to be applied. * @nr_applied: Total number of regions that the scheme is applied. * @sz_applied: Total size of regions that the scheme is applied. + * @sz_ops_filter_passed: + * Total bytes that passed ops layer-handled DAMOS filters. * @qt_exceeds: Total number of times the quota of the scheme has exceeded. * * "Tried an action to a region" in this context means the DAMOS core logic @@ -310,6 +312,7 @@ struct damos_stat { unsigned long sz_tried; unsigned long nr_applied; unsigned long sz_applied; + unsigned long sz_ops_filter_passed; unsigned long qt_exceeds; }; diff --git a/mm/damon/core.c b/mm/damon/core.c index c6ccb4825c57..c4ce72a86d81 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -1362,13 +1362,15 @@ static bool damos_skip_charged_region(struct damon_target *t, } static void damos_update_stat(struct damos *s, - unsigned long sz_tried, unsigned long sz_applied) + unsigned long sz_tried, unsigned long sz_applied, + unsigned long sz_ops_filter_passed) { s->stat.nr_tried++; s->stat.sz_tried += sz_tried; if (sz_applied) s->stat.nr_applied++; s->stat.sz_applied += sz_applied; + s->stat.sz_ops_filter_passed += sz_ops_filter_passed; } static bool __damos_filter_out(struct damon_ctx *ctx, struct damon_target *t, @@ -1586,7 +1588,7 @@ static void damos_apply_scheme(struct damon_ctx *c, struct damon_target *t, r->age = 0; update_stat: - damos_update_stat(s, sz, sz_applied); + damos_update_stat(s, sz, sz_applied, sz_ops_filter_passed); } static void damon_do_apply_schemes(struct damon_ctx *c, -- 2.39.5