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From: <Tim.Bird@sony.com>
To: <joe@perches.com>, <brendanhiggins@google.com>
Cc: <shuah@kernel.org>, <sergey.senozhatsky.work@gmail.com>,
	<kunit-dev@googlegroups.com>, <linux-kernel@vger.kernel.org>,
	<linux-kselftest@vger.kernel.org>, <frowand.list@gmail.com>,
	<sboyd@kernel.org>, <pmladek@suse.com>,
	<sergey.senozhatsky@gmail.com>, <rostedt@goodmis.org>,
	<rdunlap@infradead.org>, <sfr@canb.auug.org.au>
Subject: RE: [PATCH v2] kunit: fix failure to build without printk
Date: Fri, 30 Aug 2019 23:29:17 +0000
Message-ID: <ECADFF3FD767C149AD96A924E7EA6EAF977A842A@USCULXMSG01.am.sony.com> (raw)
In-Reply-To: <ca01d8c4823c63db52fc0f18d62334aeb5634a50.camel@perches.com>



> -----Original Message-----
> From: Joe Perches 
> 
> On Fri, 2019-08-30 at 21:58 +0000, Tim.Bird@sony.com wrote:
> > > From: Joe Perches
> []
> > IMHO %pV should be avoided if possible.  Just because people are
> > doing it doesn't mean it should be used when it is not necessary.
> 
> Well, as the guy that created %pV, I of course
> have a different opinion.

LOL.  Well I stepped in that one.

I don't have any data to support my position on this particular printk feature,
but having worked for a while on stack size reduction for a few Sony products,
I'm always a bit leery of recursive routines in the kernel.  I vaguely recall
some recursive printk routines giving me problems on a product that used
a sub-4K stack configuration I did many years ago.  I don't recall if it was
specifically %pV or not.  Anyway YMMV.
 -- Tim


  parent reply index

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-28  9:31 Brendan Higgins
2019-08-28  9:49 ` Sergey Senozhatsky
2019-08-28 11:50   ` Petr Mladek
2019-08-29 17:01   ` shuah
2019-08-30  4:44     ` Joe Perches
2019-08-30  4:56       ` Joe Perches
2019-08-30 18:38       ` Brendan Higgins
2019-08-30 20:46         ` Joe Perches
2019-08-30 21:58           ` Tim.Bird
2019-08-30 22:46             ` Joe Perches
2019-08-30 23:02               ` Brendan Higgins
2019-08-30 23:22                 ` Tim.Bird
2019-08-30 23:36                   ` Joe Perches
2019-08-30 23:37                   ` Brendan Higgins
2019-08-30 23:43                     ` Joe Perches
2019-08-31  0:06                     ` Tim.Bird
2019-09-02 12:52                     ` Petr Mladek
2019-09-02 14:39                       ` shuah
2019-08-30 23:29               ` Tim.Bird [this message]
2019-08-30  5:19     ` Sergey Senozhatsky
2019-08-28 15:52 ` Randy Dunlap

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