From: Suren Baghdasaryan <surenb@google.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Colin Cross <ccross@google.com>,
Sumit Semwal <sumit.semwal@linaro.org>,
Michal Hocko <mhocko@suse.com>,
Dave Hansen <dave.hansen@intel.com>,
Kees Cook <keescook@chromium.org>,
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"Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>,
Vlastimil Babka <vbabka@suse.cz>,
Johannes Weiner <hannes@cmpxchg.org>,
Jonathan Corbet <corbet@lwn.net>,
Al Viro <viro@zeniv.linux.org.uk>,
Randy Dunlap <rdunlap@infradead.org>,
Kalesh Singh <kaleshsingh@google.com>,
Peter Xu <peterx@redhat.com>,
rppt@kernel.org, Peter Zijlstra <peterz@infradead.org>,
Catalin Marinas <catalin.marinas@arm.com>,
vincenzo.frascino@arm.com,
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Subject: Re: [PATCH v11 2/3] mm: add a field to store names for private anonymous memory
Date: Mon, 15 Nov 2021 22:10:21 -0800 [thread overview]
Message-ID: <CAJuCfpEqO8C7eRO1Mr+MULnuKxjjh1zq2j1yoGZhocghpr7V9w@mail.gmail.com> (raw)
In-Reply-To: <20211115211905.faef6f9db3ce4a6fb9ed66a2@linux-foundation.org>
On Mon, Nov 15, 2021 at 9:19 PM Andrew Morton <akpm@linux-foundation.org> wrote:
>
> On Tue, 19 Oct 2021 14:58:36 -0700 Suren Baghdasaryan <surenb@google.com> wrote:
>
> > As Andrew suggested, I checked the image sizes with allnoconfig builds:
> >
> > unpatched Linus' ToT
> > text data bss dec hex filename
> > 1324759 32 73928 1398719 1557bf vmlinux
> >
> > After the first patch is applied (madvise refactoring)
> > text data bss dec hex filename
> > 1322346 32 73928 1396306 154e52 vmlinux
> > >>> 2413 bytes decrease vs ToT <<<
> >
> > After all patches applied with CONFIG_ANON_VMA_NAME=n
> > text data bss dec hex filename
> > 1322337 32 73928 1396297 154e49 vmlinux
> > >>> 2422 bytes decrease vs ToT <<<
> >
> > After all patches applied with CONFIG_ANON_VMA_NAME=y
> > text data bss dec hex filename
> > 1325228 32 73928 1399188 155994 vmlinux
> > >>> 469 bytes increase vs ToT <<<
>
> Nice. Presumably there are memory savings from no longer duplicating
> the vma names?
The third patch does have this effect.
>
> I fudged up a [0/n] changelog (please don't forget this) and merged it
> all for testing.
Thanks!
next prev parent reply other threads:[~2021-11-16 6:10 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-19 21:55 [PATCH v11 1/3] mm: rearrange madvise code to allow for reuse Suren Baghdasaryan
2021-10-19 21:55 ` [PATCH v11 2/3] mm: add a field to store names for private anonymous memory Suren Baghdasaryan
2021-10-19 21:58 ` Suren Baghdasaryan
2021-11-16 5:19 ` Andrew Morton
2021-11-16 6:10 ` Suren Baghdasaryan [this message]
2021-10-27 18:35 ` Alexey Alexandrov
2021-10-27 20:01 ` Suren Baghdasaryan
2021-10-28 22:08 ` Suren Baghdasaryan
2021-11-15 18:59 ` Suren Baghdasaryan
2021-11-16 9:51 ` Michal Hocko
2021-11-16 16:29 ` Suren Baghdasaryan
2021-10-19 21:55 ` [PATCH v11 3/3] mm: add anonymous vma name refcounting Suren Baghdasaryan
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