linux-kernel - Re: [PATCH v2 2/3] lockdep: add lockdep lock state defines

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Message-ID: <bb815b1d-5377-95a1-9610-827a30cb8525@linuxfoundation.org>
Date:   Fri, 26 Feb 2021 11:16:40 -0700
From:   Shuah Khan <skhan@...uxfoundation.org>
To:     Johannes Berg <johannes@...solutions.net>, peterz@...radead.org,
        mingo@...hat.com, will@...nel.org, kvalo@...eaurora.org,
        davem@...emloft.net, kuba@...nel.org
Cc:     ath10k@...ts.infradead.org, linux-wireless@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Shuah Khan <skhan@...uxfoundation.org>
Subject: Re: [PATCH v2 2/3] lockdep: add lockdep lock state defines

On 2/26/21 11:03 AM, Johannes Berg wrote:
> 
>> @@ -5475,7 +5476,7 @@ noinstr int lock_is_held_type(const struct lockdep_map *lock, int read)
>>   		/* avoid false negative lockdep_assert_not_held()
>>   		 * and lockdep_assert_held()
>>   		 */
>> -		return -1;
>> +		return LOCK_STATE_UNKNOWN;
> 
> I'd argue that then the other two return places here should also be
> changed.
> 

Makes sense.

Since lock_is_held_type() simply returns what  __lock_is_held() for the
other cases, __lock_is_held() is the one that needs changes to use these 
defines.

thanks,
-- Shuah