From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg0-f70.google.com (mail-pg0-f70.google.com [74.125.83.70]) by kanga.kvack.org (Postfix) with ESMTP id 1C6436B0038 for ; Sun, 30 Apr 2017 07:32:01 -0400 (EDT) Received: by mail-pg0-f70.google.com with SMTP id s62so1567588pgc.2 for ; Sun, 30 Apr 2017 04:32:01 -0700 (PDT) Received: from mail-pg0-x244.google.com (mail-pg0-x244.google.com. [2607:f8b0:400e:c05::244]) by mx.google.com with ESMTPS id i61si11132783plb.196.2017.04.30.04.32.00 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 30 Apr 2017 04:32:00 -0700 (PDT) Received: by mail-pg0-x244.google.com with SMTP id v1so12199764pgv.3 for ; Sun, 30 Apr 2017 04:32:00 -0700 (PDT) From: Wei Yang Subject: [PATCH 0/3] try to save some memory for kmem_cache in some cases Date: Sun, 30 Apr 2017 19:31:49 +0800 Message-Id: <20170430113152.6590-1-richard.weiyang@gmail.com> Sender: owner-linux-mm@kvack.org List-ID: To: cl@linux.com, penberg@kernel.org, rientjes@google.com, iamjoonsoo.kim@lge.com, akpm@linux-foundation.org Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Wei Yang kmem_cache is a frequently used data in kernel. During the code reading, I found maybe we could save some space in some cases. 1. On 64bit arch, type int will occupy a word if it doesn't sit well. 2. cpu_slab->partial is just used when CONFIG_SLUB_CPU_PARTIAL is set 3. cpu_partial is just used when CONFIG_SLUB_CPU_PARTIAL is set, while just save some space on 32bit arch. Wei Yang (3): mm/slub: pack red_left_pad with another int to save a word mm/slub: wrap cpu_slab->partial in CONFIG_SLUB_CPU_PARTIAL mm/slub: wrap kmem_cache->cpu_partial in config CONFIG_SLUB_CPU_PARTIAL include/linux/slub_def.h | 6 +++- mm/slub.c | 88 ++++++++++++++++++++++++++++++++---------------- 2 files changed, 64 insertions(+), 30 deletions(-) -- 2.11.0 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org