* Re: [PATCH] per-cpu areas
[not found] <E17wsrr-0007bD-00@wagner.rustcorp.com.au>
@ 2002-02-12 4:58 ` Ravikiran G Thirumalai
2002-02-13 9:48 ` Rusty Russell
2002-02-19 2:05 ` Something Wrong with LKML ???? Zoran Davidovac
1 sibling, 1 reply; 4+ messages in thread
From: Ravikiran G Thirumalai @ 2002-02-12 4:58 UTC (permalink / raw)
To: Rusty Russell; +Cc: linux-kernel
> +static void __init setup_per_cpu_areas(void)
> +{
> + unsigned long size, i;
> + char *ptr;
> + /* Created by linker magic */
> + extern char __per_cpu_start[], __per_cpu_end[];
> +
> + /* Copy section for each CPU (we discard the original) */
> + size = ALIGN(__per_cpu_end - __per_cpu_start, SMP_CACHE_BYTES);
> + ptr = alloc_bootmem(size * NR_CPUS);
Would it be possible to free up NR_CPUS - smp_num_cpus worth of memory
after smp_init? ....
Regards,
Kiran
--
Ravikiran G Thirumalai <kiran@in.ibm.com>
Linux Technology Center, IBM Software Labs,
Bangalore.
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH] per-cpu areas
2002-02-12 4:58 ` [PATCH] per-cpu areas Ravikiran G Thirumalai
@ 2002-02-13 9:48 ` Rusty Russell
0 siblings, 0 replies; 4+ messages in thread
From: Rusty Russell @ 2002-02-13 9:48 UTC (permalink / raw)
To: Ravikiran G Thirumalai; +Cc: linux-kernel
In message <20020212102852.I32236@in.ibm.com> you write:
> > +static void __init setup_per_cpu_areas(void)
> > +{
> > + unsigned long size, i;
> > + char *ptr;
> > + /* Created by linker magic */
> > + extern char __per_cpu_start[], __per_cpu_end[];
> > +
> > + /* Copy section for each CPU (we discard the original) */
> > + size = ALIGN(__per_cpu_end - __per_cpu_start, SMP_CACHE_BYTES);
> > + ptr = alloc_bootmem(size * NR_CPUS);
>
> Would it be possible to free up NR_CPUS - smp_num_cpus worth of memory
> after smp_init? ....
Yes, but memory is cheap, and writing a special "partial free"
function for this is icky. Maybe in 2 years when the per-cpu area is
100MB. 8)
We're better off reducing NR_CPUs to the maxmimum possible value of
smp_num_cpus() on that machine, IMHO.
Rusty.
--
Anyone who quotes me in their sig is an idiot. -- Rusty Russell.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Something Wrong with LKML ????
[not found] <E17wsrr-0007bD-00@wagner.rustcorp.com.au>
2002-02-12 4:58 ` [PATCH] per-cpu areas Ravikiran G Thirumalai
@ 2002-02-19 2:05 ` Zoran Davidovac
2002-02-19 8:19 ` Matti Aarnio
1 sibling, 1 reply; 4+ messages in thread
From: Zoran Davidovac @ 2002-02-19 2:05 UTC (permalink / raw)
To: linux-kernel
>From Feb 13 09:23:09 until now Tue Feb 19 03:00:08 CET 2002
I did not get any mail from relay=vger.kernel.org [12.107.208.194]
something wrong ?
or am I unsubscribed of this list because
my mail box was off for few hours
during upgrade ?
please CC on mail I not sure I am on list.
Thank You,
Zoran
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: Something Wrong with LKML ????
2002-02-19 2:05 ` Something Wrong with LKML ???? Zoran Davidovac
@ 2002-02-19 8:19 ` Matti Aarnio
0 siblings, 0 replies; 4+ messages in thread
From: Matti Aarnio @ 2002-02-19 8:19 UTC (permalink / raw)
To: Zoran Davidovac; +Cc: linux-kernel
On Tue, Feb 19, 2002 at 03:05:48AM +0100, Zoran Davidovac wrote:
> Date: Tue, 19 Feb 2002 03:05:48 +0100
> From: Zoran Davidovac <zdavid@unicef.org.yu>
> To: linux-kernel@vger.kernel.org
> Subject: Something Wrong with LKML ????
>
> >From Feb 13 09:23:09 until now Tue Feb 19 03:00:08 CET 2002
> I did not get any mail from relay=vger.kernel.org [12.107.208.194]
>
> something wrong ?
> or am I unsubscribed of this list because
> my mail box was off for few hours
> during upgrade ?
Yes, sort of. We got a large bunch of "relaying denied"
bounces from your domain's backup MX server.
Use the tool: http://vger.kernel.org/mxverify.html
to see, how your email setup appears to the email senders.
> please CC on mail I not sure I am on list.
> Thank You,
> Zoran
/Matti Aarnio
^ permalink raw reply [flat|nested] 4+ messages in thread
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[not found] <E17wsrr-0007bD-00@wagner.rustcorp.com.au>
2002-02-12 4:58 ` [PATCH] per-cpu areas Ravikiran G Thirumalai
2002-02-13 9:48 ` Rusty Russell
2002-02-19 2:05 ` Something Wrong with LKML ???? Zoran Davidovac
2002-02-19 8:19 ` Matti Aarnio
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