linux-kernel - Re: [PATCH v7 02/13] arch/x86: Rename the RDT functions and definitions

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Message-ID: <20181112194600.GJ8167@zn.tnic>
Date:   Mon, 12 Nov 2018 20:46:00 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     "Moger, Babu" <Babu.Moger@....com>
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Subject: Re: [PATCH v7 02/13] arch/x86: Rename the RDT functions and
 definitions

On Mon, Nov 12, 2018 at 07:25:02PM +0000, Moger, Babu wrote:
> >> @@ -637,10 +637,11 @@ int rdt_get_mon_l3_config(struct rdt_resource *r)
> >>  	 *
> >>  	 * For a 35MB LLC and 56 RMIDs, this is ~1.8% of the LLC.
> >>  	 */
> >> -	intel_cqm_threshold = boot_cpu_data.x86_cache_size * 1024 / r->num_rmid;
> >> +	resctrl_cqm_threshold = boot_cpu_data.x86_cache_size * 1024 /
> >> +				r->num_rmid;
> > 
> > No need to break that line here.
> 
> Without the line break, checkpatch complains for "line over 80
> characters".  Do you think we can ignore those?

To quote from the tip handbook which is in preparation right now:

"+The 80 character rule is not a strict rule, so please use common sense when
 +breaking lines."

In this particular case, it is more readable IMO to leave the line unbroken:

	resctrl_cqm_threshold = boot_cpu_data.x86_cache_size * 1024 / r->num_rmid;

What is even more readable though is:

	unsigned int cl_size = boot_cpu_data.x86_cache_size;

	...

	resctrl_cqm_threshold = cl_size * 1024 / r->num_rmid;

and now you have a win-win situation. :)

Thx.

-- 
Regards/Gruss,
    Boris.

Good mailing practices for 400: avoid top-posting and trim the reply.