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 4D2764219E9 for ; Thu, 2 Jul 2026 08:15:32 +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=1782980135; cv=none; b=bRAmFia1/YBdGgyx+SHmqCVnMZERAGpqJgje/+PZdFUffJXsge21JWu8QwUU2ezOI2Fwr2tb2xwy0sjxtTaJPLJ9+P2WeSwZd1ahTkeVMno33ozailX3gKCgHR7OaOgEOMIRulDecBaIv54kSBgooP6Vdzk4TXt9U2Y02GAFWfY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782980135; c=relaxed/simple; bh=ly8F92amQnsOQCaBj4o0vzA/fmwmJzoJxATfnphDUu4=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=uSJOvX3TTTdHchCsHMSOCGQohX0ZXggQnw+7tbqwX8ZDBcToUOjOipa1wQiU0ezwdCYZ1PPGxJMEzsCSLSby2jI5cbUsQ25LdxJrrU3gy3pmJzc47AYdOUrKANjU/QBCmh1kqV23SnJwSSfVEKqn9fhy0h084nm2CgvPbV/NqNw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=oW5Uaw4H; 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="oW5Uaw4H" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 780561F000E9; Thu, 2 Jul 2026 08:15:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1782980131; bh=mfw9uowdDLW/DkFFOVu10aIebIxT58GyNafte2Nb5aM=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=oW5Uaw4H+KdagEw5F7sM/Y5qQio1goZpKhuJf70EYcLJp1EyqGEDAFpgBo+UFliLj RmMOf5iUjxQlSNduwOTbWPYReu2upcLshvVZ4Ly3T30NYyfSZ8FZn69TH9SEtrfxi8 H+lpAdhGJbU0BL5j8u3JGkL4ZvGjD0c1S6R5w5cOr3F6iTUbL+sLAWAwE5s50Orret vEPdArlWdpY1iR5j/wOKmbcovv7uJWMj6S/FLPSBDT+6qnQVf0QKAFRVg1mF51qJe1 NxTQIpoJeU0Zs9Qh8OM8mitiTkD/LsKXXoTHe3+vbkS1PY6/wgVf62JrrbTI/HSNha tZs1L0KiUwD/Q== Message-ID: <5d23d39e-e2fc-461f-bc60-8300450eb43c@kernel.org> Date: Thu, 2 Jul 2026 10:15:26 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] slab: remove unused SL_CPU slab_stat_type To: Seongjun Hong , Harry Yoo , Andrew Morton Cc: Hao Li , Christoph Lameter , David Rientjes , Roman Gushchin , linux-mm@kvack.org, linux-kernel@vger.kernel.org References: <20260701140634.71608-1-hsj0512@snu.ac.kr> From: "Vlastimil Babka (SUSE)" Content-Language: en-US Autocrypt: addr=vbabka@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 7/1/26 16:06, Seongjun Hong wrote: > Since the removal of the per-cpu slab in commit 32c894c7274b ("slab: > remove struct kmem_cache_cpu"), show_slab_objects() no longer has a > branch handling SO_CPU, so cpu_slabs_show() always produces "0". > > Emit "0\n" directly instead, matching the sibling cpu_partial and > slabs_cpu_partial stubs, and remove the now-unused SO_CPU macro and > SL_CPU enum value. > > No functional change intended; the cpu_slabs sysfs attribute continues > to read 0. > > Signed-off-by: Seongjun Hong Applied to slab/for-next, thanks! > --- > mm/slub.c | 4 +--- > 1 file changed, 1 insertion(+), 3 deletions(-) > > diff --git a/mm/slub.c b/mm/slub.c > index 9ec774dc7009..f2eb60ce0d23 100644 > --- a/mm/slub.c > +++ b/mm/slub.c > @@ -8992,14 +8992,12 @@ static void process_slab(struct loc_track *t, struct kmem_cache *s, > enum slab_stat_type { > SL_ALL, /* All slabs */ > SL_PARTIAL, /* Only partially allocated slabs */ > - SL_CPU, /* Only slabs used for cpu caches */ > SL_OBJECTS, /* Determine allocated objects not slabs */ > SL_TOTAL /* Determine object capacity not slabs */ > }; > > #define SO_ALL (1 << SL_ALL) > #define SO_PARTIAL (1 << SL_PARTIAL) > -#define SO_CPU (1 << SL_CPU) > #define SO_OBJECTS (1 << SL_OBJECTS) > #define SO_TOTAL (1 << SL_TOTAL) > > @@ -9188,7 +9186,7 @@ SLAB_ATTR_RO(partial); > > static ssize_t cpu_slabs_show(struct kmem_cache *s, char *buf) > { > - return show_slab_objects(s, buf, SO_CPU); > + return sysfs_emit(buf, "0\n"); > } > SLAB_ATTR_RO(cpu_slabs); >