Custom Search

Re: [PATCH RT 3/9][RFC] [PATCH 3/9] lglock/rt: Use non-rt for_each_cpu() in -rt code

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]



On Fri, 2012-03-02 at 12:55 +0530, Srivatsa S. Bhat wrote:
> On 03/02/2012 12:25 AM, Steven Rostedt wrote:
>  	}								\
> > +	register_hotcpu_notifier(&name##_lg_cpu_notifier);		\
> > +	get_online_cpus();						\
> > +	for_each_online_cpu(i)						\
> > +		cpu_set(i, name##_cpus);				\
> 
> 
> This can be further improved. We don't really need this loop. We can replace
> it with:
> 
> cpumask_copy(&name##_cpus, cpu_online_mask);
> 
> (as pointed out by Ingo. See: https://lkml.org/lkml/2012/2/29/93 and
> https://lkml.org/lkml/2012/2/29/153).
> 
> I will try sending a patch for this to non-RT after the numerous patches
> currently flying around this code (in non-RT) settle down..
> 
> 

Yeah, I thought that was funny too, but I wanted RT to be close to
mainline. My thoughts were to fix the broken hotplug code at the time
and I wasn't thinking too much on improving mainline ;-)

-- Steve


--
To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[RT Stable]     [Kernel Newbies]     [Share Photos]     [IDE]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Photo]     [Yosemite]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux ATA RAID]     [Samba]     [Video 4 Linux]     [Device Mapper]     [Linux Resources]

Add to Google Powered by Linux