From: Oscar Salvador <osalvador@suse.de>
To: Peter Collingbourne <pcc@google.com>
Cc: Andrey Konovalov <andreyknvl@gmail.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Michal Hocko <mhocko@suse.com>, Vlastimil Babka <vbabka@suse.cz>,
Marco Elver <elver@google.com>,
Alexander Potapenko <glider@google.com>,
Omar Sandoval <osandov@fb.com>
Subject: Re: [PATCH] stackdepot: Rename pool_index to pool_index_plus_1
Date: Tue, 2 Apr 2024 10:01:22 +0200 [thread overview]
Message-ID: <Zgu7UoJt1Vi5gH0v@localhost.localdomain> (raw)
In-Reply-To: <20240402001500.53533-1-pcc@google.com>
On Mon, Apr 01, 2024 at 05:14:58PM -0700, Peter Collingbourne wrote:
> Commit 3ee34eabac2a ("lib/stackdepot: fix first entry having a
> 0-handle") changed the meaning of the pool_index field to mean "the
> pool index plus 1". This made the code accessing this field less
> self-documenting, as well as causing debuggers such as drgn to not
> be able to easily remain compatible with both old and new kernels,
> because they typically do that by testing for presence of the new
> field. Because stackdepot is a debugging tool, we should make sure
> that it is debugger friendly. Therefore, give the field a different
> name to improve readability as well as enabling debugger backwards
> compatibility.
>
> Signed-off-by: Peter Collingbourne <pcc@google.com>
> Link: https://linux-review.googlesource.com/id/Ib3e70c36c1d230dd0a118dc22649b33e768b9f88
Acked-by: Oscar Salvador <osalvador@suse.de>
--
Oscar Salvador
SUSE Labs
prev parent reply other threads:[~2024-04-02 8:00 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-02 0:14 Peter Collingbourne
2024-04-02 6:54 ` Vlastimil Babka
2024-04-02 7:04 ` Alexander Potapenko
2024-04-02 7:08 ` Marco Elver
2024-04-02 8:01 ` Oscar Salvador [this message]
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