From: "Alastair D'Silva" <alastair@d-silva.org>
To: "'David Laight'" <David.Laight@ACULAB.COM>,
"'Alastair D'Silva'" <alastair@au1.ibm.com>
Cc: "'Jani Nikula'" <jani.nikula@linux.intel.com>,
"'Joonas Lahtinen'" <joonas.lahtinen@linux.intel.com>,
"'Rodrigo Vivi'" <rodrigo.vivi@intel.com>,
"'David Airlie'" <airlied@linux.ie>,
"'Daniel Vetter'" <daniel@ffwll.ch>,
"'Karsten Keil'" <isdn@linux-pingi.de>,
"'Jassi Brar'" <jassisinghbrar@gmail.com>,
"'Tom Lendacky'" <thomas.lendacky@amd.com>,
"'David S. Miller'" <davem@davemloft.net>,
"'Jose Abreu'" <Jose.Abreu@synopsys.com>,
"'Kalle Valo'" <kvalo@codeaurora.org>,
"'Stanislaw Gruszka'" <sgruszka@redhat.com>,
"'Benson Leung'" <bleung@chromium.org>,
"'Enric Balletbo i Serra'" <enric.balletbo@collabora.com>,
"'James E.J. Bottomley'" <jejb@linux.ibm.com>,
"'Martin K. Petersen'" <martin.petersen@oracle.com>,
"'Greg Kroah-Hartman'" <gregkh@linuxfoundation.org>,
"'Alexander Viro'" <viro@zeniv.linux.org.uk>,
"'Petr Mladek'" <pmladek@suse.com>,
"'Sergey Senozhatsky'" <sergey.senozhatsky@gmail.com>,
"'Steven Rostedt'" <rostedt@goodmis.org>,
"'Andrew Morton'" <akpm@linux-foundation.org>,
<intel-gfx@lists.freedesktop.org>,
<dri-devel@lists.freedesktop.org>, <linux-kernel@vger.kernel.org>,
<netdev@vger.kernel.org>, <ath10k@lists.infradead.org>,
<linux-wireless@vger.kernel.org>, <linux-scsi@vger.kernel.org>,
<linux-fbdev@vger.kernel.org>, <devel@driverdev.osuosl.org>,
<linux-fsdevel@vger.kernel.org>
Subject: RE: [PATCH 4/4] lib/hexdump.c: Allow multiple groups to be separated by lines '|'
Date: Wed, 10 Apr 2019 19:52:58 +1000 [thread overview]
Message-ID: <051301d4ef83$34d2c710$9e785530$@d-silva.org> (raw)
In-Reply-To: <1cd09186c67b4fa4bceb84faf835ff10@AcuMS.aculab.com>
> -----Original Message-----
> From: David Laight <David.Laight@ACULAB.COM>
> Sent: Wednesday, 10 April 2019 6:45 PM
> To: 'Alastair D'Silva' <alastair@au1.ibm.com>; alastair@d-silva.org
> Cc: Jani Nikula <jani.nikula@linux.intel.com>; Joonas Lahtinen
> <joonas.lahtinen@linux.intel.com>; Rodrigo Vivi <rodrigo.vivi@intel.com>;
> David Airlie <airlied@linux.ie>; Daniel Vetter <daniel@ffwll.ch>; Karsten Keil
> <isdn@linux-pingi.de>; Jassi Brar <jassisinghbrar@gmail.com>; Tom Lendacky
> <thomas.lendacky@amd.com>; David S. Miller <davem@davemloft.net>;
> Jose Abreu <Jose.Abreu@synopsys.com>; Kalle Valo
> <kvalo@codeaurora.org>; Stanislaw Gruszka <sgruszka@redhat.com>;
> Benson Leung <bleung@chromium.org>; Enric Balletbo i Serra
> <enric.balletbo@collabora.com>; James E.J. Bottomley
> <jejb@linux.ibm.com>; Martin K. Petersen <martin.petersen@oracle.com>;
> Greg Kroah-Hartman <gregkh@linuxfoundation.org>; Alexander Viro
> <viro@zeniv.linux.org.uk>; Petr Mladek <pmladek@suse.com>; Sergey
> Senozhatsky <sergey.senozhatsky@gmail.com>; Steven Rostedt
> <rostedt@goodmis.org>; Andrew Morton <akpm@linux-foundation.org>;
> intel-gfx@lists.freedesktop.org; dri-devel@lists.freedesktop.org; linux-
> kernel@vger.kernel.org; netdev@vger.kernel.org;
> ath10k@lists.infradead.org; linux-wireless@vger.kernel.org; linux-
> scsi@vger.kernel.org; linux-fbdev@vger.kernel.org;
> devel@driverdev.osuosl.org; linux-fsdevel@vger.kernel.org
> Subject: RE: [PATCH 4/4] lib/hexdump.c: Allow multiple groups to be
> separated by lines '|'
>
> From: Alastair D'Silva
> > Sent: 10 April 2019 04:17
> > With the wider display format, it can become hard to identify how many
> > bytes into the line you are looking at.
> >
> > The patch adds new flags to hex_dump_to_buffer() and
> print_hex_dump()
> > to print vertical lines to separate every N groups of bytes.
> >
> > eg.
> > buf:00000000: 454d414e 43415053|4e495f45 00584544
> NAMESPAC|E_INDEX.
> > buf:00000010: 00000000 00000002|00000000 00000000 ........|........
>
> Ugg, that is just horrid.
> It is enough to add an extra space if you really need the columns to be more
> easily counted.
>
I did consider that, but it would be a more invasive change, as the buffer length required would differ based on the flags.
> I'm not even sure that is needed if you are printing 32bit words.
> OTOH 32bit words makes 64bit values really stupid on LE systems.
> Bytes with extra spaces every 4 bytes is the format I prefer even for long
> lines.
>
> Oh, and if you are using hexdump() a lot you want a version that never uses
> snprintf().
>
> David
>
> -
> Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes,
> MK1 1PT, UK Registration No: 1397386 (Wales)
>
>
> ---
> This email has been checked for viruses by AVG.
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next prev parent reply other threads:[~2019-04-10 9:53 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-10 3:17 [PATCH 0/4] Hexdump enhancements Alastair D'Silva
2019-04-10 3:17 ` [PATCH 1/4] lib/hexdump.c: Allow 64 bytes per line Alastair D'Silva
2019-04-12 13:48 ` Petr Mladek
2019-04-12 23:22 ` Alastair D'Silva
2019-04-15 9:02 ` Petr Mladek
2019-04-15 10:29 ` Alastair D'Silva
2019-04-15 10:56 ` David Laight
2019-04-15 10:59 ` Alastair D'Silva
2019-04-10 3:17 ` [PATCH 2/4] lib/hexdump.c: Optionally suppress lines of filler bytes Alastair D'Silva
2019-04-10 3:32 ` Alastair D'Silva
2019-04-12 14:03 ` Petr Mladek
2019-04-12 23:28 ` Alastair D'Silva
2019-04-15 9:18 ` Petr Mladek
2019-04-15 10:33 ` Alastair D'Silva
2019-04-10 3:17 ` [PATCH 3/4] lib/hexdump.c: Replace ascii bool in hex_dump_to_buffer with flags Alastair D'Silva
2019-04-10 6:56 ` Dan Carpenter
2019-04-12 14:12 ` Petr Mladek
2019-04-12 23:31 ` Alastair D'Silva
2019-04-15 9:24 ` Petr Mladek
2019-04-15 10:07 ` Alastair D'Silva
2019-04-15 10:20 ` David Laight
2019-04-15 10:44 ` Alastair D'Silva
2019-04-15 11:03 ` David Laight
2019-04-15 11:12 ` Alastair D'Silva
2019-04-12 14:47 ` [Intel-gfx] " Tvrtko Ursulin
2019-04-10 3:17 ` [PATCH 4/4] lib/hexdump.c: Allow multiple groups to be separated by lines '|' Alastair D'Silva
2019-04-10 8:45 ` David Laight
2019-04-10 9:52 ` Alastair D'Silva [this message]
2019-04-10 8:53 ` Sergey Senozhatsky
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