Re: [PATCH v11 05/10] x86/resctrl: Unwind the errors inside rdt_enable_ctx()

[Reinette Chatre <reinette.chatre@intel.com>]

Hi Boris,

On 10/9/2023 10:25 AM, Borislav Petkov wrote:
> On Tue, Oct 03, 2023 at 06:54:25PM -0500, Babu Moger wrote:
>> rdt_enable_ctx() enables the features provided during resctrl mount.
>>
>> Additions to rdt_enable_ctx() are required to also modify error paths
>> of rdt_enable_ctx() callers to ensure correct unwinding if errors
>> are encountered after calling rdt_enable_ctx(). This is error prone.
>>
>> Introduce rdt_disable_ctx() to refactor the error unwinding of
>> rdt_enable_ctx() to simplify future additions. This also simplifies
>> cleanup in rdt_kill_sb().
>>
>> Remove cdp_disable_all() as it is not used anymore after the refactor.
> 
> Do not talk about *what* the patch is doing in the commit message - that
> should be obvious from the diff itself. Rather, concentrate on the *why*
> it needs to be done.

I worked with Babu on this commit message and would appreciate guidance to
get this (and others) right. The second paragraph intends to explain the
current problem with rdt_enable_ctx() with the third paragraph providing an
overview of how the problem will be fixed and why (future code needs to touch
this area).

Is it the fourth paragraph (mentioning cdp_disable_all()) that is annoying? I
can see that it is redundant. Would it be more palatable if the fourth paragraph
is just dropped?

> 
> Check your whole series.
> 

Reinette