linux-kernel - Re: [GIT PULL] scheduler fixes

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Message-ID: <84144f020905250437x585e66a2oc1124a4f1f43059d@mail.gmail.com>
Date:	Mon, 25 May 2009 14:37:59 +0300
From:	Pekka Enberg <penberg@...helsinki.fi>
To:	Nick Piggin <npiggin@...e.de>
Cc:	Ingo Molnar <mingo@...e.hu>, Yinghai Lu <yinghai@...nel.org>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"H. Peter Anvin" <hpa@...or.com>, Jeff Garzik <jgarzik@...ox.com>,
	Alexander Viro <viro@....linux.org.uk>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	cl@...ux-foundation.org, mpm@...enic.com
Subject: Re: [GIT PULL] scheduler fixes

On Mon, May 25, 2009 at 2:25 PM, Nick Piggin <npiggin@...e.de> wrote:
>> @@ -576,6 +576,22 @@ asmlinkage void __init start_kernel(void)
>>       setup_nr_cpu_ids();
>>       smp_prepare_boot_cpu(); /* arch-specific boot-cpu hooks */
>>
>> +     build_all_zonelists();
>> +     page_alloc_init();
>> +
>> +     printk(KERN_NOTICE "Kernel command line: %s\n", boot_command_line);
>> +     parse_early_param();
>> +     parse_args("Booting kernel", static_command_line, __start___param,
>> +                __stop___param - __start___param,
>> +                &unknown_bootoption);
>> +     /*
>> +      * Setup kernel memory allocators
>> +      */
>> +     pidhash_init();
>> +     vmalloc_init();
>> +     vfs_caches_init_early();
>> +     mem_init();
>> +     kmem_cache_init();

On Mon, May 25, 2009 at 2:25 PM, Nick Piggin <npiggin@...e.de> wrote:
> Looks quite OK to me. The comment above maybe misleading?
>
> The bootmem allocations of course are required because some hashes may
> need to be larger than MAX_ORDER without using vmalloc.
>
> kmem_cache_init (and mem_init, partially) sets up the kernel memory
> allocators...

Which comment are you talking about? The "setup kernel memory
allocators" one? Yeah, I should probably move it couple of lines down.
It's just that we absolutely need to do the other ones before calling
mem_init() and then kmem_cache_init().

On Mon, May 25, 2009 at 2:25 PM, Nick Piggin <npiggin@...e.de> wrote:
> I can take a look at the SLQB side.

Great!

                        Pekka
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