From: Jamie Lokier <jamie@shareable.org>
To: Jared Hulbert <jaredeh@gmail.com>
Cc: Linux-kernel@vger.kernel.org, linux-embedded@vger.kernel.org,
linux-mtd <linux-mtd@lists.infradead.org>,
"Jörn Engel" <joern@logfs.org>,
tim.bird@AM.SONY.COM, cotte@de.ibm.com, nickpiggin@yahoo.com.au
Subject: Re: [PATCH 00/10] AXFS: Advanced XIP filesystem
Date: Thu, 21 Aug 2008 12:07:50 +0100 [thread overview]
Message-ID: <20080821110749.GA1926@shareable.org> (raw)
In-Reply-To: <48AD00C4.6060302@gmail.com>
Jared Hulbert wrote:
> The biggest improvement is in the way AXFS allows for each page to be XIP or
> not. First, a user collects information about which pages are accessed on a
> compressed image for each mmap()ed region from /proc/axfs/volume0. That
> 'profile' is used as an input to the image builder. The resulting image has
> only the relevant pages uncompressed and XIP. The result is smaller memory
> sizes and faster launches.
Sounds great, really nice idea.
How does it fare with no MMU? Can the profiler and image builder lay
out the XIP pages in such a way that no-MMU mmaps can map those regions?
No complaint if not, it would be a nice bonus though.
-- Jamie
WARNING: multiple messages have this Message-ID (diff)
From: Jamie Lokier <jamie@shareable.org>
To: Jared Hulbert <jaredeh@gmail.com>
Cc: cotte@de.ibm.com, linux-embedded@vger.kernel.org,
nickpiggin@yahoo.com.au, "Jörn Engel" <joern@logfs.org>,
Linux-kernel@vger.kernel.org,
linux-mtd <linux-mtd@lists.infradead.org>,
tim.bird@AM.SONY.COM
Subject: Re: [PATCH 00/10] AXFS: Advanced XIP filesystem
Date: Thu, 21 Aug 2008 12:07:50 +0100 [thread overview]
Message-ID: <20080821110749.GA1926@shareable.org> (raw)
In-Reply-To: <48AD00C4.6060302@gmail.com>
Jared Hulbert wrote:
> The biggest improvement is in the way AXFS allows for each page to be XIP or
> not. First, a user collects information about which pages are accessed on a
> compressed image for each mmap()ed region from /proc/axfs/volume0. That
> 'profile' is used as an input to the image builder. The resulting image has
> only the relevant pages uncompressed and XIP. The result is smaller memory
> sizes and faster launches.
Sounds great, really nice idea.
How does it fare with no MMU? Can the profiler and image builder lay
out the XIP pages in such a way that no-MMU mmaps can map those regions?
No complaint if not, it would be a nice bonus though.
-- Jamie
next prev parent reply other threads:[~2008-08-21 11:07 UTC|newest]
Thread overview: 107+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-21 5:44 [PATCH 00/10] AXFS: Advanced XIP filesystem Jared Hulbert
2008-08-21 5:44 ` Jared Hulbert
2008-08-21 6:32 ` Frans Meulenbroeks
2008-08-21 6:32 ` Frans Meulenbroeks
2008-08-21 19:32 ` Jared Hulbert
2008-08-21 19:32 ` Jared Hulbert
2008-08-22 2:04 ` Nick Piggin
2008-08-22 2:04 ` Nick Piggin
2008-08-21 8:39 ` Dave Chinner
2008-08-21 8:39 ` Dave Chinner
2008-08-21 14:19 ` Jared Hulbert
2008-08-21 14:19 ` Jared Hulbert
2008-08-21 14:31 ` Leon Woestenberg
2008-08-21 14:31 ` Leon Woestenberg
2008-08-21 14:42 ` Jared Hulbert
2008-08-21 14:42 ` Jared Hulbert
2008-08-21 14:49 ` Geert Uytterhoeven
2008-08-21 14:49 ` Geert Uytterhoeven
2008-08-21 10:25 ` Carsten Otte
2008-08-21 10:25 ` Carsten Otte
2008-08-21 10:43 ` Nick Piggin
2008-08-21 10:43 ` Nick Piggin
2008-08-21 12:53 ` Arnd Bergmann
2008-08-21 12:53 ` Arnd Bergmann
2008-08-21 14:12 ` Jared Hulbert
2008-08-21 14:12 ` Jared Hulbert
2008-08-21 14:14 ` Arnd Bergmann
2008-08-21 14:14 ` Arnd Bergmann
2008-08-21 14:13 ` Jared Hulbert
2008-08-21 14:13 ` Jared Hulbert
2008-08-22 2:32 ` Nick Piggin
2008-08-22 2:32 ` Nick Piggin
2008-08-21 14:30 ` Jared Hulbert
2008-08-21 14:30 ` Jared Hulbert
2008-08-21 11:07 ` Jamie Lokier [this message]
2008-08-21 11:07 ` Jamie Lokier
2008-08-21 14:11 ` Jared Hulbert
2008-08-21 14:11 ` Jared Hulbert
2008-08-22 0:12 ` Greg Ungerer
2008-08-22 0:12 ` Greg Ungerer
2008-08-22 2:48 ` Jared Hulbert
2008-08-22 2:48 ` Jared Hulbert
2008-08-25 6:35 ` Greg Ungerer
2008-08-25 6:35 ` Greg Ungerer
2008-08-25 11:43 ` Jamie Lokier
2008-08-25 11:43 ` Jamie Lokier
2008-08-25 14:02 ` Greg Ungerer
2008-08-25 14:02 ` Greg Ungerer
2008-08-22 18:13 ` Jamie Lokier
2008-08-22 18:13 ` Jamie Lokier
2008-08-22 18:16 ` Jared Hulbert
2008-08-22 18:16 ` Jared Hulbert
2008-08-22 18:37 ` Jamie Lokier
2008-08-22 18:37 ` Jamie Lokier
2008-08-22 18:43 ` Jamie Lokier
2008-08-22 18:43 ` Jamie Lokier
2008-09-12 21:52 ` Jared Hulbert
2008-09-12 21:52 ` Jared Hulbert
2008-09-15 16:34 ` Jamie Lokier
2008-09-15 16:34 ` Jamie Lokier
2008-09-15 19:43 ` Jared Hulbert
2008-09-15 19:43 ` Jared Hulbert
2008-09-19 19:20 ` Trent Piepho
2008-09-19 19:20 ` Trent Piepho
2008-09-16 6:57 ` Ricard Wanderlof
2008-09-16 6:57 ` Ricard Wanderlof
2008-09-16 6:57 ` Ricard Wanderlof
2008-09-16 15:30 ` Jared Hulbert
2008-09-16 15:30 ` Jared Hulbert
2008-09-12 20:17 ` Jared Hulbert
2008-09-12 20:17 ` Jared Hulbert
2008-09-15 16:40 ` Jamie Lokier
2008-09-15 16:40 ` Jamie Lokier
2008-08-21 23:46 ` Greg Ungerer
2008-08-21 23:46 ` Greg Ungerer
2008-08-22 18:10 ` Jamie Lokier
2008-08-22 18:10 ` Jamie Lokier
2008-08-22 14:54 ` Geert Uytterhoeven
2008-08-22 14:54 ` Geert Uytterhoeven
2008-08-22 15:19 ` Arnd Bergmann
2008-08-22 15:19 ` Arnd Bergmann
2008-08-22 16:51 ` Jared Hulbert
2008-08-22 16:51 ` Jared Hulbert
2008-08-25 9:37 ` Geert Uytterhoeven
2008-08-25 9:37 ` Geert Uytterhoeven
2008-08-25 9:37 ` Geert Uytterhoeven
2008-08-25 10:52 ` Carsten Otte
2008-08-25 10:52 ` Carsten Otte
2008-08-25 12:16 ` David Woodhouse
2008-08-25 12:16 ` David Woodhouse
2008-08-28 15:40 ` Geert Uytterhoeven
2008-08-28 15:40 ` Geert Uytterhoeven
2008-09-02 15:37 ` Geert Uytterhoeven
2008-09-02 15:37 ` Geert Uytterhoeven
2008-09-02 16:44 ` Jared Hulbert
2008-09-02 16:44 ` Jared Hulbert
2008-09-02 17:15 ` Jörn Engel
2008-09-02 17:15 ` Jörn Engel
2008-09-02 17:15 ` Jörn Engel
2008-09-02 17:47 ` Jared Hulbert
2008-09-02 17:47 ` Jared Hulbert
2008-09-02 18:33 ` Geert Uytterhoeven
2008-09-02 18:33 ` Geert Uytterhoeven
2008-08-22 22:09 ` Will Marone
2008-08-22 22:09 ` Will Marone
2008-08-25 7:23 ` Geert Uytterhoeven
2008-08-25 7:23 ` Geert Uytterhoeven
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