linux-kernel - Re: [PATCH] x86: introduce bootmem

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Message-ID: <20090306145928.GE21907@elte.hu>
Date:	Fri, 6 Mar 2009 15:59:28 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Pekka Enberg <penberg@...helsinki.fi>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] x86: introduce bootmem_state


* Yinghai Lu <yinghai@...nel.org> wrote:

> Impact: cleanup
> 
> extend after_bootmem and after_init_bootmem to bootmem_state 
> and will have BEFORE_BOOTMEM, DURING_BOOTMEM, AFTER_BOOTMEM

Ok, that indeed makes all these bootstrap initialization details 
cleaner and more transparent.

> Signed-off-by: Yinghai Lu <yinghai@...nel.org>
> 
> ---
>  arch/x86/kernel/setup.c |    1 +
>  arch/x86/mm/init.c      |   13 +++++++------
>  arch/x86/mm/init_32.c   |   28 ++++++++++++++++++++--------
>  arch/x86/mm/init_64.c   |   33 +++++++++++++++++++--------------
>  include/linux/mm.h      |    8 ++++++++
>  5 files changed, 55 insertions(+), 28 deletions(-)

Note: "git grep after_bootmem" will show you another affected 
architecture as well.

> +++ linux-2.6/include/linux/mm.h
> @@ -1067,6 +1067,14 @@ extern void __init mmap_init(void);
>  extern void show_mem(void);
>  extern void si_meminfo(struct sysinfo * val);
>  extern void si_meminfo_node(struct sysinfo *val, int nid);
> +
> +enum bootmem_state_t {
> +	BEFORE_BOOTMEM = 0,

(nit: =0 is not required. )

> +	DURING_BOOTMEM,
> +	AFTER_BOOTMEM
> +};
> +extern enum bootmem_state_t bootmem_state;

(nit: we put newlines after enum definitions)

	Ingo
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