Received-SPF: softfail (google.com: domain of transitioning linux-kernel-owner@vger.kernel.org does not designate 23.128.96.19 as permitted sender) client-ip=23.128.96.19;
Message-ID: <fc0a8dc0-a150-441e-4882-fdddbf2033f0@openvz.org>
Date:   Wed, 18 May 2022 18:45:04 +0300
MIME-Version: 1.0
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101
 Thunderbird/91.8.1
From:   Vasily Averin <vvs@openvz.org>
Subject: Re: [PATCH v3] tracing: add 'accounted' entry into output of
 allocation tracepoints
Content-Language: en-US
To:     Steven Rostedt <rostedt@goodmis.org>,
        Shakeel Butt <shakeelb@google.com>,
        Roman Gushchin <roman.gushchin@linux.dev>,
        Vlastimil Babka <vbabka@suse.cz>,
        Matthew Wilcox <willy@infradead.org>,
        Hyeonggon Yoo <42.hyeyoo@gmail.com>,
        Muchun Song <songmuchun@bytedance.com>
Cc:     kernel@openvz.org, linux-kernel@vger.kernel.org,
        Ingo Molnar <mingo@redhat.com>,
        Andrew Morton <akpm@linux-foundation.org>, linux-mm@kvack.org,
        Joonsoo Kim <iamjoonsoo.kim@lge.com>,
        David Rientjes <rientjes@google.com>,
        Pekka Enberg <penberg@kernel.org>,
        Christoph Lameter <cl@linux.com>,
        Michal Hocko <mhocko@suse.com>
Reply-To: YoPOhRctb8wwbmY5@carbon
References: <f6625cd8-90f9-6d48-50f6-7bb052bf479f@openvz.org>
In-Reply-To: <f6625cd8-90f9-6d48-50f6-7bb052bf479f@openvz.org>
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 7bit
Precedence: bulk

On 5/18/22 09:24, Vasily Averin wrote:
> Slab caches marked with SLAB_ACCOUNT force accounting for every
> allocation from this cache even if __GFP_ACCOUNT flag is not passed.
> Unfortunately, at the moment this flag is not visible in ftrace output,
> and this makes it difficult to analyze the accounted allocations.
> 
> This patch adds boolean "allocated" entry into trace output,

not "allocated" but "accounted"

> and set it to 'true' for calls used __GFP_ACCOUNT flag and
> for allocations from caches marked with SLAB_ACCOUNT.
> 
> Signed-off-by: Vasily Averin <vvs@openvz.org>