linux-kernel - Re: [PATCH v11] mm: slub: move sysfs slab alloc/free interfaces to debugfs

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Message-ID: <7d652fca-23f3-fc03-c7b2-310edcafebb3@codeaurora.org>
Date:   Thu, 10 Jun 2021 14:26:43 +0530
From:   Faiyaz Mohammed <faiyazm@...eaurora.org>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     Christoph Lameter <cl@...ux.com>,
        Pekka Enberg <penberg@...nel.org>,
        David Rientjes <rientjes@...gle.com>,
        Joonsoo Kim <iamjoonsoo.kim@....com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linux-mm <linux-mm@...ck.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Greg KH <greg@...ah.com>, glittao@...il.com,
        vinmenon@...eaurora.org, Vlastimil Babka <vbabka@...e.cz>
Subject: Re: [PATCH v11] mm: slub: move sysfs slab alloc/free interfaces to
 debugfs

Hi Andy,

On 6/8/2021 11:43 PM, Faiyaz Mohammed wrote:
> 
> 
> On 6/8/2021 11:05 PM, Vlastimil Babka wrote:
>> On 6/8/21 7:11 PM, Faiyaz Mohammed wrote:
>>>
>>>
>>> On 6/8/2021 5:20 PM, Andy Shevchenko wrote:
>>>> On Tue, Jun 8, 2021 at 11:45 AM Faiyaz Mohammed <faiyazm@...eaurora.org> wrote:
>>>>>
>>>>> alloc_calls and free_calls implementation in sysfs have two issues,
>>>>> one is PAGE_SIZE limitation of sysfs and other is it does not adhere
>>>>> to "one value per file" rule.
>>>>>
>>>>> To overcome this issues, move the alloc_calls and free_calls
>>>>> implementation to debugfs.
>>>>>
>>>>> Debugfs cache will be created if SLAB_STORE_USER flag is set.
>>>>>
>>>>> Rename the alloc_calls/free_calls to alloc_traces/free_traces,
>>>>> to be inline with what it does.
>>>>>
>>>>> Signed-off-by: Faiyaz Mohammed <faiyazm@...eaurora.org>
>>>>> ---
>>>>
>>>> It seems you missed the version bump along with changelog.
>>>> Note, some maintainers (actually quite many I think) are using tools
>>>> to fetch up the patches and two patches with the same version is a
>>>> problem. Hence I do not consider it a nit-pick.
>>>>
>>> Hmmm, I think to avoid same version problem I have to push same patch
>>> with new version number and thank you for your patience.
>>
>> I *think* Andrew wouldn't have this issue, so maybe resend only if he says it's
>> needed.
> Sure, I will send if he ask.
Do I need to send patch with new version number?.

>> On the other hand I did have troubles to apply the last version locally, patch
>> (tool) complained of patch (file) being malformed at the end. Did you add or
>> delete lines from it after generating the patch? I had to use the recountdiff
> Yes, I added one line manually, I think that causes the issue.
> 
>> tool to fix this. If you're going to resend, please make sure it's without the
>> same issue.
>>
> Okay
> 
>>> Thanks and regards,
>>> Mohammed Faiyaz
>>>
>>