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Date: Sat, 13 Apr 2019 09:31:27 +1000
From: "Alastair D'Silva" <alastair@...ilva.org>
To: "'Petr Mladek'" <pmladek@...e.com>,
"'Alastair D'Silva'" <alastair@....ibm.com>
Cc: "'Jani Nikula'" <jani.nikula@...ux.intel.com>,
"'Joonas Lahtinen'" <joonas.lahtinen@...ux.intel.com>,
"'Rodrigo Vivi'" <rodrigo.vivi@...el.com>,
"'David Airlie'" <airlied@...ux.ie>,
"'Daniel Vetter'" <daniel@...ll.ch>,
"'Karsten Keil'" <isdn@...ux-pingi.de>,
"'Jassi Brar'" <jassisinghbrar@...il.com>,
"'Tom Lendacky'" <thomas.lendacky@....com>,
"'David S. Miller'" <davem@...emloft.net>,
"'Jose Abreu'" <Jose.Abreu@...opsys.com>,
"'Kalle Valo'" <kvalo@...eaurora.org>,
"'Stanislaw Gruszka'" <sgruszka@...hat.com>,
"'Benson Leung'" <bleung@...omium.org>,
"'Enric Balletbo i Serra'" <enric.balletbo@...labora.com>,
"'James E.J. Bottomley'" <jejb@...ux.ibm.com>,
"'Martin K. Petersen'" <martin.petersen@...cle.com>,
"'Greg Kroah-Hartman'" <gregkh@...uxfoundation.org>,
"'Alexander Viro'" <viro@...iv.linux.org.uk>,
"'Sergey Senozhatsky'" <sergey.senozhatsky@...il.com>,
"'Steven Rostedt'" <rostedt@...dmis.org>,
"'Andrew Morton'" <akpm@...ux-foundation.org>,
<intel-gfx@...ts.freedesktop.org>,
<dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>,
<netdev@...r.kernel.org>, <ath10k@...ts.infradead.org>,
<linux-wireless@...r.kernel.org>, <linux-scsi@...r.kernel.org>,
<linux-fbdev@...r.kernel.org>, <devel@...verdev.osuosl.org>,
<linux-fsdevel@...r.kernel.org>
Subject: RE: [PATCH 3/4] lib/hexdump.c: Replace ascii bool in hex_dump_to_buffer with flags
> -----Original Message-----
> From: Petr Mladek <pmladek@...e.com>
> Sent: Saturday, 13 April 2019 12:12 AM
> To: Alastair D'Silva <alastair@....ibm.com>
> Cc: alastair@...ilva.org; Jani Nikula <jani.nikula@...ux.intel.com>;
Joonas
> Lahtinen <joonas.lahtinen@...ux.intel.com>; Rodrigo Vivi
> <rodrigo.vivi@...el.com>; David Airlie <airlied@...ux.ie>; Daniel Vetter
> <daniel@...ll.ch>; Karsten Keil <isdn@...ux-pingi.de>; Jassi Brar
> <jassisinghbrar@...il.com>; Tom Lendacky <thomas.lendacky@....com>;
> David S. Miller <davem@...emloft.net>; Jose Abreu
> <Jose.Abreu@...opsys.com>; Kalle Valo <kvalo@...eaurora.org>;
> Stanislaw Gruszka <sgruszka@...hat.com>; Benson Leung
> <bleung@...omium.org>; Enric Balletbo i Serra
> <enric.balletbo@...labora.com>; James E.J. Bottomley
> <jejb@...ux.ibm.com>; Martin K. Petersen <martin.petersen@...cle.com>;
> Greg Kroah-Hartman <gregkh@...uxfoundation.org>; Alexander Viro
> <viro@...iv.linux.org.uk>; Sergey Senozhatsky
> <sergey.senozhatsky@...il.com>; Steven Rostedt <rostedt@...dmis.org>;
> Andrew Morton <akpm@...ux-foundation.org>; intel-
> gfx@...ts.freedesktop.org; dri-devel@...ts.freedesktop.org; linux-
> kernel@...r.kernel.org; netdev@...r.kernel.org;
> ath10k@...ts.infradead.org; linux-wireless@...r.kernel.org; linux-
> scsi@...r.kernel.org; linux-fbdev@...r.kernel.org;
> devel@...verdev.osuosl.org; linux-fsdevel@...r.kernel.org
> Subject: Re: [PATCH 3/4] lib/hexdump.c: Replace ascii bool in
> hex_dump_to_buffer with flags
>
> On Wed 2019-04-10 13:17:19, Alastair D'Silva wrote:
> > From: Alastair D'Silva <alastair@...ilva.org>
> >
> > In order to support additional features in hex_dump_to_buffer, replace
> > the ascii bool parameter with flags.
> >
> > Signed-off-by: Alastair D'Silva <alastair@...ilva.org>
> > ---
> > drivers/gpu/drm/i915/intel_engine_cs.c | 2 +-
> > drivers/isdn/hardware/mISDN/mISDNisar.c | 6 ++++--
> > drivers/mailbox/mailbox-test.c | 2 +-
> > drivers/net/ethernet/amd/xgbe/xgbe-drv.c | 2 +-
> > drivers/net/ethernet/synopsys/dwc-xlgmac-common.c | 2 +-
> > drivers/net/wireless/ath/ath10k/debug.c | 3 ++-
> > drivers/net/wireless/intel/iwlegacy/3945-mac.c | 2 +-
> > drivers/platform/chrome/wilco_ec/debugfs.c | 3 ++-
> > drivers/scsi/scsi_logging.c | 8 +++-----
> > drivers/staging/fbtft/fbtft-core.c | 2 +-
> > fs/seq_file.c | 3 ++-
> > include/linux/printk.h | 2 +-
> > lib/hexdump.c | 15 ++++++++-------
> > lib/test_hexdump.c | 5 +++--
> > 14 files changed, 31 insertions(+), 26 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c
> > b/drivers/gpu/drm/i915/intel_engine_cs.c
> > index 49fa43ff02ba..fb133e729f9a 100644
> > --- a/drivers/gpu/drm/i915/intel_engine_cs.c
> > +++ b/drivers/gpu/drm/i915/intel_engine_cs.c
> > @@ -1318,7 +1318,7 @@ static void hexdump(struct drm_printer *m, const
> void *buf, size_t len)
> > WARN_ON_ONCE(hex_dump_to_buffer(buf + pos, len -
> pos,
> > rowsize, sizeof(u32),
> > line, sizeof(line),
> > - false) >= sizeof(line));
> > + 0) >= sizeof(line));
>
> It might be more clear when we define:
>
> #define HEXDUMP_BINARY 0
This feels unnecessary, and weird. Omitting the flag won't disable the hex
output (as expected), and if you don't want hex output, why call hexdump in
the first place?
> > drm_printf(m, "[%04zx] %s\n", pos, line);
> >
> > prev = buf + pos;
> > diff --git a/include/linux/printk.h b/include/linux/printk.h index
> > c014e5573665..82975853c400 100644
> > --- a/include/linux/printk.h
> > +++ b/include/linux/printk.h
> > @@ -493,7 +493,7 @@ enum {
> >
> > extern int hex_dump_to_buffer(const void *buf, size_t len, int rowsize,
> > int groupsize, char *linebuf, size_t
linebuflen,
> > - bool ascii);
> > + u64 flags);
>
> I wonder how fancy hex_dump could be. IMHO, u32 should be enough.
> The last famous words ;-)
>
> Best Regards,
> Petr
>
>
> ---
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