From: Michal Hocko <mhocko@kernel.org>
To: Pasha Tatashin <pasha.tatashin@oracle.com>
Cc: linux-kernel@vger.kernel.org, sparclinux@vger.kernel.org,
linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org,
linux-s390@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
x86@kernel.org, kasan-dev@googlegroups.com,
borntraeger@de.ibm.com, heiko.carstens@de.ibm.com,
davem@davemloft.net, willy@infradead.org,
ard.biesheuvel@linaro.org, will.deacon@arm.com,
catalin.marinas@arm.com, sam@ravnborg.org
Subject: Re: [v6 15/15] mm: debug for raw alloctor
Date: Tue, 15 Aug 2017 11:36:32 +0200 [thread overview]
Message-ID: <20170815093631.GD29067@dhcp22.suse.cz> (raw)
In-Reply-To: <b4eb28ad-2d58-fb23-2139-427df46c2773@oracle.com>
On Mon 14-08-17 10:01:52, Pasha Tatashin wrote:
> >>However, now thinking about it, I will change it to CONFIG_MEMBLOCK_DEBUG,
> >>and let users decide what other debugging configs need to be enabled, as
> >>this is also OK.
> >
> >Actually the more I think about it the more I am convinced that a kernel
> >boot parameter would be better because it doesn't need the kernel to be
> >recompiled and it is a single branch in not so hot path.
>
> The main reason I do not like kernel parameter is that automated test suits
> for every platform would need to be updated to include this new parameter in
> order to test it.
How does this differ from the enabling a config option and building a
separate kernel?
My primary point of the kernel option was to have something available to
debug without recompiling the kernel which is more tedious than simply
adding one option to the kernel command line.
--
Michal Hocko
SUSE Labs
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next prev parent reply other threads:[~2017-08-15 9:36 UTC|newest]
Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-07 20:38 [v6 00/15] complete deferred page initialization Pavel Tatashin
2017-08-07 20:38 ` [v6 01/15] x86/mm: reserve only exiting low pages Pavel Tatashin
2017-08-11 8:07 ` Michal Hocko
2017-08-11 15:24 ` Pasha Tatashin
2017-08-14 11:40 ` Michal Hocko
2017-08-14 13:30 ` Pasha Tatashin
2017-08-14 13:55 ` Michal Hocko
2017-08-17 15:37 ` Pasha Tatashin
2017-08-07 20:38 ` [v6 02/15] x86/mm: setting fields in deferred pages Pavel Tatashin
2017-08-11 9:02 ` Michal Hocko
2017-08-11 15:39 ` Pasha Tatashin
2017-08-14 11:43 ` Michal Hocko
2017-08-14 13:32 ` Pasha Tatashin
2017-08-07 20:38 ` [v6 03/15] sparc64/mm: " Pavel Tatashin
2017-08-07 20:38 ` [v6 04/15] mm: discard memblock data later Pavel Tatashin
2017-08-11 9:32 ` Michal Hocko
2017-08-11 9:50 ` Mel Gorman
2017-08-11 15:49 ` Pasha Tatashin
2017-08-11 16:04 ` Michal Hocko
2017-08-11 16:22 ` Pasha Tatashin
2017-08-14 11:36 ` Michal Hocko
2017-08-14 13:35 ` Pasha Tatashin
2017-08-11 19:00 ` Pasha Tatashin
2017-08-14 11:34 ` Michal Hocko
2017-08-14 13:39 ` Pasha Tatashin
2017-08-14 13:42 ` Michal Hocko
2017-08-07 20:38 ` [v6 05/15] mm: don't accessed uninitialized struct pages Pavel Tatashin
2017-08-11 9:37 ` Michal Hocko
2017-08-11 15:55 ` Pasha Tatashin
2017-08-14 11:47 ` Michal Hocko
2017-08-14 13:51 ` Pasha Tatashin
2017-08-17 15:28 ` Pasha Tatashin
2017-08-17 15:43 ` Michal Hocko
2017-08-15 9:33 ` Michal Hocko
2017-08-07 20:38 ` [v6 06/15] sparc64: simplify vmemmap_populate Pavel Tatashin
2017-08-07 20:38 ` [v6 07/15] mm: defining memblock_virt_alloc_try_nid_raw Pavel Tatashin
2017-08-11 12:39 ` Michal Hocko
2017-08-11 15:58 ` Pasha Tatashin
2017-08-11 16:06 ` Michal Hocko
2017-08-11 16:24 ` Pasha Tatashin
2017-08-07 20:38 ` [v6 08/15] mm: zero struct pages during initialization Pavel Tatashin
2017-08-11 12:50 ` Michal Hocko
2017-08-11 16:03 ` Pasha Tatashin
2017-08-07 20:38 ` [v6 09/15] sparc64: optimized struct page zeroing Pavel Tatashin
2017-08-11 12:53 ` Michal Hocko
2017-08-11 16:04 ` Pasha Tatashin
2017-08-07 20:38 ` [v6 10/15] x86/kasan: explicitly zero kasan shadow memory Pavel Tatashin
2017-08-07 20:38 ` [v6 11/15] arm64/kasan: " Pavel Tatashin
2017-08-08 9:07 ` Will Deacon
2017-08-08 11:49 ` Pasha Tatashin
2017-08-08 12:30 ` Will Deacon
2017-08-08 12:49 ` Pasha Tatashin
2017-08-08 13:15 ` David Laight
2017-08-08 13:30 ` Pasha Tatashin
2017-08-07 20:38 ` [v6 12/15] mm: explicitly zero pagetable memory Pavel Tatashin
2017-08-07 20:38 ` [v6 13/15] mm: stop zeroing memory during allocation in vmemmap Pavel Tatashin
2017-08-11 13:04 ` Michal Hocko
2017-08-11 16:11 ` Pasha Tatashin
2017-08-07 20:38 ` [v6 14/15] mm: optimize early system hash allocations Pavel Tatashin
2017-08-11 13:05 ` Michal Hocko
2017-08-11 16:13 ` Pasha Tatashin
2017-08-07 20:38 ` [v6 15/15] mm: debug for raw alloctor Pavel Tatashin
2017-08-11 13:08 ` Michal Hocko
2017-08-11 16:18 ` Pasha Tatashin
2017-08-14 11:50 ` Michal Hocko
2017-08-14 14:01 ` Pasha Tatashin
2017-08-15 9:36 ` Michal Hocko [this message]
2017-08-11 7:58 ` [v6 00/15] complete deferred page initialization Michal Hocko
2017-08-11 15:13 ` Pasha Tatashin
2017-08-11 15:22 ` Michal Hocko
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