From nobody Fri Apr 3 04:38:36 2026 Received: from sender-of-o55.zoho.eu (sender-of-o55.zoho.eu [136.143.169.55]) (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 73E2037266F for ; Wed, 25 Mar 2026 07:38:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=pass smtp.client-ip=136.143.169.55 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774424306; cv=pass; b=IV8TI1P5mcVPr30cNU4eNjLd5v8b4t1qbJqS5YuJu3kQOI52UJW5yD58tcAxAUW/uQQTvcrsChBhj3oECQqGuHRhi7FWkM1bALWf5jFY437wv2eQd5pUk1C5l8/QBPQTJpVtRW//6QzBUAjFXNjOYjOStHqF5BYbN1RpRgvuC5Q= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774424306; c=relaxed/simple; bh=NCpDFdVe9iHnwJZlnOzuHDWnpqfCBtDcOeacFMCNRYw=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=FJwl4nEVWUGJG75SIkFUtTHK5ememFxpMgFMM8clKWhCjN9fb6NjaKTHpkL1SDGDS3rgZ2A+O82jm7Tfy3EPmT8lBlboCTn8ywr3Cj8ohPV2lkK4i3rwIv26irX1PGUYI6BkSyqfQS6olG/fiwOUVtXyy4/s2rJZB1VDSW9scwE= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=objecting.org; spf=pass smtp.mailfrom=objecting.org; dkim=pass (1024-bit key) header.d=objecting.org header.i=objecting@objecting.org header.b=fvjLZYLl; arc=pass smtp.client-ip=136.143.169.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=objecting.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=objecting.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=objecting.org header.i=objecting@objecting.org header.b="fvjLZYLl" ARC-Seal: i=1; a=rsa-sha256; t=1774424285; cv=none; d=zohomail.eu; s=zohoarc; b=YUzINS5O5bYJ12stM1hz4afv2mWnJwNouWzE9tsnTZwfsF/eo4twLFV1MLog0ODzKPR+tkmtHU8Eqdhjv9NLRcSkQL22vn66WmaAZsyVvHGANpVynkp+a9M6LyONtyW4WtKdjF7II08qVdSkqU7RBsSxVyZRl/nZG9oO4JPy6qg= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.eu; s=zohoarc; t=1774424285; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:MIME-Version:Message-ID:References:Subject:Subject:To:To:Message-Id:Reply-To; bh=UiDWbq+Vesxlf62C23Hm8indkustIaG2EimGmGm7dUo=; b=NUMZ631GPwwuMUAfMzWO4/FTB8pp6rxMkVrU/dwxVIs6/RB9ipKwBYIa7GX9DREJbgtvN/2YL9P3GJ3Shgwd8ffiswCDVwJSCWmMTtni3WCgMpL/XkCQQ+grEB398DHEGvVfw+V+RVhDuvHGeAAC+WryF5wsMsqckVsowZSHmqw= ARC-Authentication-Results: i=1; mx.zohomail.eu; dkim=pass header.i=objecting.org; spf=pass smtp.mailfrom=objecting@objecting.org; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1774424285; s=zmail; d=objecting.org; i=objecting@objecting.org; h=From:From:To:To:Cc:Cc:Subject:Subject:Date:Date:Message-Id:Message-Id:In-Reply-To:References:MIME-Version:Content-Transfer-Encoding:Reply-To; bh=UiDWbq+Vesxlf62C23Hm8indkustIaG2EimGmGm7dUo=; b=fvjLZYLlsfhzXVv87/zGnHVe1ANmLrP76ixhW6UGJ7FKpYKZyqll5IHXQKv8WypX U7liFT/wyr8BdcF0vqJU3AjvthuXoTCW0v0JhJ3cuR1T7i7C8VJiJb0RMmTCBQTAlsi ppRTPmPX6USpkm4QEjn3aAYUbGZLrM8N/UxTcA8A= Received: by mx.zoho.eu with SMTPS id 1774424282494241.87438479042987; Wed, 25 Mar 2026 08:38:02 +0100 (CET) From: Josh Law To: SeongJae Park , Andrew Morton Cc: damon@lists.linux.dev, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Josh Law Subject: [PATCH 1/3] mm/damon/core: deduplicate scheme index lookup into helper Date: Wed, 25 Mar 2026 07:37:58 +0000 Message-Id: <20260325073800.141756-2-objecting@objecting.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260325073800.141756-1-objecting@objecting.org> References: <20260325073800.141756-1-objecting@objecting.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMailClient: External Content-Type: text/plain; charset="utf-8" Three functions (damos_apply_scheme, damos_trace_esz, damos_trace_stat) contain identical loops walking the schemes list to find a scheme's index for tracing. Extract the common pattern into damon_scheme_idx(). Signed-off-by: Josh Law --- mm/damon/core.c | 41 +++++++++++++++++------------------------ 1 file changed, 17 insertions(+), 24 deletions(-) diff --git a/mm/damon/core.c b/mm/damon/core.c index 6ee421141996..56372e577931 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -2045,6 +2045,19 @@ static void damos_walk_cancel(struct damon_ctx *ctx) mutex_unlock(&ctx->walk_control_lock); } =20 +static unsigned int damon_scheme_idx(struct damon_ctx *c, struct damos *s) +{ + unsigned int idx =3D 0; + struct damos *siter; + + damon_for_each_scheme(siter, c) { + if (siter =3D=3D s) + break; + idx++; + } + return idx; +} + static void damos_apply_scheme(struct damon_ctx *c, struct damon_target *t, struct damon_region *r, struct damos *s) { @@ -2060,7 +2073,6 @@ static void damos_apply_scheme(struct damon_ctx *c, s= truct damon_target *t, * index here. */ unsigned int cidx =3D 0; - struct damos *siter; /* schemes iterator */ unsigned int sidx =3D 0; struct damon_target *titer; /* targets iterator */ unsigned int tidx =3D 0; @@ -2068,11 +2080,7 @@ static void damos_apply_scheme(struct damon_ctx *c, = struct damon_target *t, =20 /* get indices for trace_damos_before_apply() */ if (trace_damos_before_apply_enabled()) { - damon_for_each_scheme(siter, c) { - if (siter =3D=3D s) - break; - sidx++; - } + sidx =3D damon_scheme_idx(c, s); damon_for_each_target(titer, c) { if (titer =3D=3D t) break; @@ -2394,15 +2402,7 @@ static void damos_set_effective_quota(struct damos_q= uota *quota) static void damos_trace_esz(struct damon_ctx *c, struct damos *s, struct damos_quota *quota) { - unsigned int cidx =3D 0, sidx =3D 0; - struct damos *siter; - - damon_for_each_scheme(siter, c) { - if (siter =3D=3D s) - break; - sidx++; - } - trace_damos_esz(cidx, sidx, quota->esz); + trace_damos_esz(0, damon_scheme_idx(c, s), quota->esz); } =20 static void damos_adjust_quota(struct damon_ctx *c, struct damos *s) @@ -2469,18 +2469,11 @@ static void damos_adjust_quota(struct damon_ctx *c,= struct damos *s) =20 static void damos_trace_stat(struct damon_ctx *c, struct damos *s) { - unsigned int cidx =3D 0, sidx =3D 0; - struct damos *siter; - if (!trace_damos_stat_after_apply_interval_enabled()) return; =20 - damon_for_each_scheme(siter, c) { - if (siter =3D=3D s) - break; - sidx++; - } - trace_damos_stat_after_apply_interval(cidx, sidx, &s->stat); + trace_damos_stat_after_apply_interval(0, damon_scheme_idx(c, s), + &s->stat); } =20 static void kdamond_apply_schemes(struct damon_ctx *c) --=20 2.34.1