From patchwork Fri Feb 25 13:07:01 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: SeongJae Park X-Patchwork-Id: 12760209 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2EAB6C43217 for ; Fri, 25 Feb 2022 13:07:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236633AbiBYNIM (ORCPT ); Fri, 25 Feb 2022 08:08:12 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45378 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240922AbiBYNIE (ORCPT ); Fri, 25 Feb 2022 08:08:04 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 44AA722A2AE; Fri, 25 Feb 2022 05:07:32 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id D442561C58; Fri, 25 Feb 2022 13:07:31 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5FDA6C340E7; Fri, 25 Feb 2022 13:07:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1645794451; bh=BN0RNQE82EItJGsbrfD48UPrIRDNL1uB0fAkgBxI96s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PC/hsuXwwEBqFRHWJtWJUhNQAftRG8uhJbV8Ol1tOzcjoXuTywjB+QVZ9xEbr8bWr D+ZEViOzODjhZnMdEpK1TfqirM3TmIdFfav1j+9A2xlpwOfnAE7XSbWqzhqqk+x0L6 evdDnoEEkrJxV0yVCZq6HyHYqGH3hRlNBsfIV569eF8jzrUY29J6CjTBo9LWO3Z1cw MBUR4mcvVZyf5QHJnMSmJ1P56mOcVzpaxIf4q8ddcVP5ldNb/FIQMgwh9bQb70RWWO Jn7j6lxOOa93gp1PhGBWSTuRSZN0dsA55tnfnRUIpnJHNyXDoCSKCi1/hCDsJC6wQk w/GWThdyLjo0w== From: SeongJae Park To: akpm@linux-foundation.org Cc: corbet@lwn.net, skhan@linuxfoundation.org, rientjes@google.com, xhao@linux.alibaba.com, linux-damon@amazon.com, linux-mm@kvack.org, linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, SeongJae Park Subject: [PATCH v2 02/13] mm/damon/core: Add number of each enum type values Date: Fri, 25 Feb 2022 13:07:01 +0000 Message-Id: <20220225130712.12682-3-sj@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220225130712.12682-1-sj@kernel.org> References: <20220225130712.12682-1-sj@kernel.org> Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org This commit declares the number of legal values for each DAMON enum types to make traversals of such DAMON enum types easy and safe. Signed-off-by: SeongJae Park --- include/linux/damon.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/linux/damon.h b/include/linux/damon.h index f8e99e47d747..f23cbfa4248d 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -87,6 +87,7 @@ struct damon_target { * @DAMOS_HUGEPAGE: Call ``madvise()`` for the region with MADV_HUGEPAGE. * @DAMOS_NOHUGEPAGE: Call ``madvise()`` for the region with MADV_NOHUGEPAGE. * @DAMOS_STAT: Do nothing but count the stat. + * @NR_DAMOS_ACTIONS: Total number of DAMOS actions */ enum damos_action { DAMOS_WILLNEED, @@ -95,6 +96,7 @@ enum damos_action { DAMOS_HUGEPAGE, DAMOS_NOHUGEPAGE, DAMOS_STAT, /* Do nothing but only record the stat */ + NR_DAMOS_ACTIONS, }; /** @@ -157,10 +159,12 @@ struct damos_quota { * * @DAMOS_WMARK_NONE: Ignore the watermarks of the given scheme. * @DAMOS_WMARK_FREE_MEM_RATE: Free memory rate of the system in [0,1000]. + * @NR_DAMOS_WMARK_METRICS: Total number of DAMOS watermark metrics */ enum damos_wmark_metric { DAMOS_WMARK_NONE, DAMOS_WMARK_FREE_MEM_RATE, + NR_DAMOS_WMARK_METRICS, }; /**