linux-kernel - Re: [PATCHv4 2/2] mm: use stack_depot_early

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Message-ID: <b6da6f3b-8d66-2b8c-b02e-14d274260493@suse.cz>
Date:   Fri, 20 Jan 2023 13:52:49 +0100
From:   Vlastimil Babka <vbabka@...e.cz>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     "zhaoyang.huang" <zhaoyang.huang@...soc.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Nathan Chancellor <nathan@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Zhaoyang Huang <huangzhaoyang@...il.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, ke.wang@...soc.com,
        Mirsad Todorovac <mirsad.todorovac@....unizg.hr>
Subject: Re: [PATCHv4 2/2] mm: use stack_depot_early_init for kmemleak

On 1/19/23 23:42, Andrew Morton wrote:
> On Thu, 19 Jan 2023 11:32:36 +0100 Vlastimil Babka <vbabka@...e.cz> wrote:
> 
>> But to be cleaner I'd also suggest Andrew adds the hunk below. The call
>> to stack_depot_init() becomes no-op after this patch so it's not a bug
>> to leave it there, but it's just misleading now.
>>
>> ---8<---
>> diff --git a/mm/kmemleak.c b/mm/kmemleak.c
>> index 91dda5c2753a..55dc8b8b0616 100644
>> --- a/mm/kmemleak.c
>> +++ b/mm/kmemleak.c
>> @@ -2095,7 +2095,6 @@ void __init kmemleak_init(void)
>>   	if (kmemleak_error)
>>   		return;
>>   
>> -	stack_depot_init();
>>   	jiffies_min_age = msecs_to_jiffies(MSECS_MIN_AGE);
>>   	jiffies_scan_wait = msecs_to_jiffies(SECS_SCAN_WAIT * 1000);
>>   
> 
> I added your signoff to this.

Fine with me, thanks.

> I used not to bother for such minor to-be-folded fixups, but now
> Stephen sends me automated nags when his scripts detect this.

Ack, will try to remember that next time.