From mboxrd@z Thu Jan  1 00:00:00 1970
From: SF Markus Elfring <elfring@users.sourceforge.net>
Date: Sun, 16 Nov 2014 14:26:05 +0000
Subject: Re: [Cocci] [PATCH 1/1] kprobes: Deletion of an unnecessary check before the function call "module_p
Message-Id: <5468B3FD.20409@users.sourceforge.net>
List-Id: <kernel-janitors.vger.kernel.org>
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To: cocci@systeme.lip6.fr

>> diff --git a/kernel/kprobes.c b/kernel/kprobes.c
>> index 3995f54..f1e7d45 100644
>> --- a/kernel/kprobes.c
>> +++ b/kernel/kprobes.c
>> @@ -1527,8 +1527,7 @@ int register_kprobe(struct kprobe *p)
>>  out:
>>  	mutex_unlock(&kprobe_mutex);
>>
>> -	if (probed_mod)
>> -		module_put(probed_mod);
>> +	module_put(probed_mod);
> 
> There is an out label, so please check whether the labels could not be
> better positioned to avoid calling module_put when it is not needed.

I do not see refactoring opportunities around jump labels in this use case
for the implementation of the register_kprobe() function so far because
the mutex_unlock() function must be called.
Would you like to suggest any other source code fine-tuning?

Regards,
Markus