From: Vlastimil Babka <vbabka@suse.cz>
To: Christoph Lameter <cl@gentwo.de>, Yang Shi <shy828301@gmail.com>
Cc: Roman Gushchin <guro@fb.com>,
Xunlei Pang <xlpang@linux.alibaba.com>,
Pekka Enberg <penberg@kernel.org>,
Konstantin Khlebnikov <khlebnikov@yandex-team.ru>,
David Rientjes <rientjes@google.com>,
Matthew Wilcox <willy@infradead.org>,
Shu Ming <sming56@gmail.com>,
Andrew Morton <akpm@linux-foundation.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux MM <linux-mm@kvack.org>,
Wen Yang <wenyang@linux.alibaba.com>,
James Wang <jnwang@linux.alibaba.com>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH v3 0/4] mm/slub: Fix count_partial() problem
Date: Tue, 16 Mar 2021 11:32:17 +0100 [thread overview]
Message-ID: <0690ac12-e112-9e14-e228-4692af446265@suse.cz> (raw)
In-Reply-To: <alpine.DEB.2.22.394.2103161105430.342782@gentwo.de>
On 3/16/21 11:07 AM, Christoph Lameter wrote:
> On Mon, 15 Mar 2021, Yang Shi wrote:
>
>> > It seems like CONFIG_SLUB_DEBUG is a more popular option than CONFIG_SLUB_STATS.
>> > CONFIG_SLUB_DEBUG is enabled on my Fedora workstation, CONFIG_SLUB_STATS is off.
>> > I doubt an average user needs this data, so I'd go with CONFIG_SLUB_STATS.
Hm I can imagine that (after due performance testing) we would consider having
accurate slabinfo in our distro kernel, just as we have CONFIG_SLUB_DEBUG but
not the full stats.
>> I think CONFIG_SLUB_DEBUG is enabled by default on most distros since
>> it is supposed not incur too much overhead unless specific debug (i.e.
>> red_zone) is turned on on demand.
>
> Correct. CONFIG_SLUB_DEBUG includes the code so the debugging can be
> enabled on Distro kernels with a kernel command line option. So you dont
> have to recompile the kernel to find weird memory corruption issues from
> strange device drivers.
>
> Somehow my email address dropped off this thread.
Hm I see cl@linux.com in all e-mails of the thread, but now you replaced it with
cl@gentwo.de ?
next prev parent reply other threads:[~2021-03-16 10:32 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-09 15:25 [PATCH v3 0/4] mm/slub: Fix count_partial() problem Xunlei Pang
2021-03-09 15:25 ` [PATCH v3 1/4] mm/slub: Introduce two counters for partial objects Xunlei Pang
2021-03-09 15:25 ` [PATCH v3 2/4] mm/slub: Get rid of count_partial() Xunlei Pang
2021-03-09 15:25 ` [PATCH v3 3/4] percpu: Export per_cpu_sum() Xunlei Pang
2021-03-09 15:25 ` [PATCH v3 4/4] mm/slub: Use percpu partial free counter Xunlei Pang
2021-03-15 18:49 ` [PATCH v3 0/4] mm/slub: Fix count_partial() problem Vlastimil Babka
2021-03-15 19:05 ` Roman Gushchin
2021-03-15 19:22 ` Yang Shi
2021-03-16 10:07 ` Christoph Lameter
2021-03-16 10:32 ` Vlastimil Babka [this message]
2021-03-16 10:42 ` Xunlei Pang
2021-03-16 11:02 ` Vlastimil Babka
2021-03-16 11:49 ` Xunlei Pang
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