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From: shuah <shuah@kernel.org>
To: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>,
	Brendan Higgins <brendanhiggins@google.com>,
	Joe Perches <joe@perches.com>
Cc: 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, Randy Dunlap <rdunlap@infradead.org>,
	Stephen Rothwell <sfr@canb.auug.org.au>, shuah <shuah@kernel.org>
Subject: Re: [PATCH v2] kunit: fix failure to build without printk
Date: Thu, 29 Aug 2019 11:01:08 -0600
Message-ID: <8b2d63bf-56cd-e8f5-e8ee-2891c2c1be8f@kernel.org> (raw)
In-Reply-To: <20190828094929.GA14038@jagdpanzerIV>

On 8/28/19 3:49 AM, Sergey Senozhatsky wrote:
> On (08/28/19 02:31), Brendan Higgins wrote:
> [..]
>> Previously KUnit assumed that printk would always be present, which is
>> not a valid assumption to make. Fix that by removing call to
>> vprintk_emit, and calling printk directly.
>>
>> Reported-by: Randy Dunlap <rdunlap@infradead.org>
>> Link: https://lore.kernel.org/linux-kselftest/0352fae9-564f-4a97-715a-fabe016259df@kernel.org/T/#t
>> Cc: Stephen Rothwell <sfr@canb.auug.org.au>
>> Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
>> Signed-off-by: Brendan Higgins <brendanhiggins@google.com>
> 
> [..]
> 
>> -static void kunit_vprintk(const struct kunit *test,
>> -			  const char *level,
>> -			  struct va_format *vaf)
>> -{
>> -	kunit_printk_emit(level[1] - '0', "\t# %s: %pV", test->name, vaf);
>> -}
> 
> This patch looks good to me. I like the removal of recursive
> vsprintf() (%pV).
> 
> 	-ss
> 

Hi Sergey,

What are the guidelines for using printk(). I recall some discussion
about not using printk(). I am seeing the following from checkpatch
script:


WARNING: Prefer [subsystem eg: netdev]_level([subsystem]dev, ... then 
dev_level(dev, ... then pr_level(...  to printk(KERN_LEVEL ...
#105: FILE: include/kunit/test.h:343:
+	printk(KERN_LEVEL "\t# %s: " fmt, (test)->name, ##__VA_ARGS__)


Is there supposed to be pr_level() - I can find dev_level()

cc'ing Joe Perches for his feedback on this message recommending
pr_level() which isn't in 5.3.

thanks,
-- Shuah

thanks,
-- Shuah

  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 [this message]
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
2019-08-30  5:19     ` Sergey Senozhatsky
2019-08-28 15:52 ` Randy Dunlap

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