From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <owner-linux-mm@kvack.org>
Received: from mail-io0-f197.google.com (mail-io0-f197.google.com [209.85.223.197])
	by kanga.kvack.org (Postfix) with ESMTP id E4DCF6B038B
	for <linux-mm@kvack.org>; Tue,  7 Mar 2017 16:24:44 -0500 (EST)
Received: by mail-io0-f197.google.com with SMTP id z13so16779943iof.7
        for <linux-mm@kvack.org>; Tue, 07 Mar 2017 13:24:44 -0800 (PST)
Received: from resqmta-ch2-06v.sys.comcast.net (resqmta-ch2-06v.sys.comcast.net. [2001:558:fe21:29:69:252:207:38])
        by mx.google.com with ESMTPS id q187si15452611itc.66.2017.03.07.13.24.44
        for <linux-mm@kvack.org>
        (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);
        Tue, 07 Mar 2017 13:24:44 -0800 (PST)
Message-Id: <20170307212437.843312800@linux.com>
Date: Tue, 07 Mar 2017 15:24:30 -0600
From: Christoph Lameter <cl@linux.com>
Subject: [RFC 1/6] slub: Replace ctor field with ops field in /sys/slab/*
References: <20170307212429.044249411@linux.com>
Content-Type: text/plain; charset=UTF-8
Content-Disposition: inline; filename=ctor_to_ops
Sender: owner-linux-mm@kvack.org
List-ID: <linux-mm.kvack.org>
To: Matthew Wilcox <willy@infradead.org>
Cc: linux-mm@kvack.org, Pekka Enberg <penberg@cs.helsinki.fi>, akpm@linux-foundation.org, Mel Gorman <mel@skynet.ie>, andi@firstfloor.org, Rik van Riel <riel@redhat.com>

Create an ops field in /sys/slab/*/ops to contain all the operations defined
on a slab. This will be used to display the additional operations that will
be defined soon to enable defragmentation.

Signed-off-by: Christoph Lameter <cl@linux.com>

---
 mm/slub.c |   16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

Index: linux/mm/slub.c
===================================================================
--- linux.orig/mm/slub.c
+++ linux/mm/slub.c
@@ -4942,13 +4942,18 @@ static ssize_t cpu_partial_store(struct
 }
 SLAB_ATTR(cpu_partial);
 
-static ssize_t ctor_show(struct kmem_cache *s, char *buf)
+static ssize_t ops_show(struct kmem_cache *s, char *buf)
 {
+	int x;
+
 	if (!s->ctor)
 		return 0;
-	return sprintf(buf, "%pS\n", s->ctor);
+
+	if (s->ctor)
+		x += sprintf(buf + x, "ctor : %pS\n", s->ctor);
+	return x;
 }
-SLAB_ATTR_RO(ctor);
+SLAB_ATTR_RO(ops);
 
 static ssize_t aliases_show(struct kmem_cache *s, char *buf)
 {
@@ -5356,7 +5361,7 @@ static struct attribute *slab_attrs[] =
 	&objects_partial_attr.attr,
 	&partial_attr.attr,
 	&cpu_slabs_attr.attr,
-	&ctor_attr.attr,
+	&ops_attr.attr,
 	&aliases_attr.attr,
 	&align_attr.attr,
 	&hwcache_align_attr.attr,

--
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: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>