linux-kernel - Re: [PATCH 06/20] early_res: seperate common memmap func from e820.c to fw

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Date:	Wed, 24 Mar 2010 11:37:18 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
CC:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
	David Miller <davem@...emloft.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>, hpa@...or.com,
	jbarnes@...tuousgeek.org, ebiederm@...ssion.com,
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org
Subject: Re: [PATCH 06/20] early_res: seperate common memmap func from e820.c
 to fw_memmap.cy

On 03/24/2010 12:43 AM, Benjamin Herrenschmidt wrote:
> On Tue, 2010-03-23 at 22:54 -0700, Yinghai Lu wrote:
>> if the array can be doubled and have old one copied to new one. 
>> then we don't change lmb.c too much.
>>
>> new early_res.c exend lmb. and another half already works with x86 to
>> replace bootmem.
>>
>> will check if i can produce one patch to make powerpc to reuse
>> early_res/nobootmem
> 
> While at it, can you rename early_res to something that doesn't
> suck ? :-)
> 
ok, 

please check following renaming is ok to you.

the api from linux/early_res.h

#ifndef _LINUX_EARLY_RES_H
#define _LINUX_EARLY_RES_H
#ifdef __KERNEL__

extern void reserve_early(u64 start, u64 end, char *name);
extern void free_early(u64 start, u64 end);
void lmb_reserved_to_bootmem(u64 start, u64 end);

u64 find_early_area(u64 ei_start, u64 ei_last, u64 start, u64 end,
                         u64 size, u64 align);

void add_lmb_memory(u64 start, u64 end);

u64 find_lmb_area(u64 start, u64 end, u64 size, u64 align);
u64 find_lmb_area_size(u64 start, u64 *sizep, u64 align);
u64 find_lmb_area_node(int nid, u64 start, u64 end, u64 size, u64 align);
void lmb_register_active_regions(int nid, unsigned long start_pfn,
                                         unsigned long last_pfn);
u64 lmb_hole_size(u64 start, u64 end);
u64 get_max_mapped(void);
struct range;
int get_free_all_memory_range(struct range **rangep, int nodeid);

#endif /* __KERNEL__ */

#endif /* _LINUX_EARLY_RES_H */

====>

extern void reserve_lmb(u64 start, u64 end, char *name);
extern void free_lmb(u64 start, u64 end);
void lmb_reserved_to_bootmem(u64 start, u64 end);

u64 __find_lmb_area(u64 ei_start, u64 ei_last, u64 start, u64 end,
                         u64 size, u64 align);

void add_lmb_memory(u64 start, u64 end);

u64 find_lmb_area(u64 start, u64 end, u64 size, u64 align);
u64 find_lmb_area_size(u64 start, u64 *sizep, u64 align);
u64 find_lmb_area_node(int nid, u64 start, u64 end, u64 size, u64 align);
void lmb_register_active_regions(int nid, unsigned long start_pfn,
                                         unsigned long last_pfn);
u64 lmb_hole_size(u64 start, u64 end);
u64 get_max_mapped(void);
struct range;
int get_free_all_memory_range(struct range **rangep, int nodeid);

Thanks

Yinghai
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