linux-kernel - Re: [PATCH 08/43] memblock/microblaze: Use new accessors

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Date:	Fri, 06 Aug 2010 10:52:17 +0200
From:	Michal Simek <monstr@...str.eu>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
CC:	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	torvalds@...ux-foundation.org
Subject: Re: [PATCH 08/43] memblock/microblaze: Use new accessors

Benjamin Herrenschmidt wrote:
> CC: Michal Simek <monstr@...str.eu>
> Signed-off-by: Benjamin Herrenschmidt <benh@...nel.crashing.org>

This patch remove bug which I reported but there is another place which 
needs to be changed.

I am not sure if my patch is correct but at least point you on places 
which is causing compilation errors.

I tested your memblock branch with this fix and microblaze can boot.

Thanks,
Michal

   CC      arch/microblaze/mm/init.o
arch/microblaze/mm/init.c: In function 'mm_cmdline_setup':
arch/microblaze/mm/init.c:236: error: 'struct memblock_type' has no 
member named 'region'
arch/microblaze/mm/init.c: In function 'mmu_init':
arch/microblaze/mm/init.c:279: error: 'struct memblock_type' has no 
member named 'region'
arch/microblaze/mm/init.c:284: error: 'struct memblock_type' has no 
member named 'region'
arch/microblaze/mm/init.c:285: error: 'struct memblock_type' has no 
member named 'region'
arch/microblaze/mm/init.c:286: error: 'struct memblock_type' has no 
member named 'region'
make[1]: *** [arch/microblaze/mm/init.o] Error 1
make: *** [arch/microblaze/mm] Error 2


diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
index 32a702b..a9d7b9b 100644
--- a/arch/microblaze/mm/init.c
+++ b/arch/microblaze/mm/init.c
@@ -233,7 +233,7 @@ static void mm_cmdline_setup(void)
                 if (maxmem && memory_size > maxmem) {
                         memory_size = maxmem;
                         memory_end = memory_start + memory_size;
-                       memblock.memory.region[0].size = memory_size;
+                       memblock.memory.regions[0].size = memory_size;
                 }
         }
  }
@@ -276,14 +276,14 @@ asmlinkage void __init mmu_init(void)
                 machine_restart(NULL);
         }

-       if ((u32) memblock.memory.region[0].size < 0x1000000) {
+       if ((u32) memblock.memory.regions[0].size < 0x1000000) {
                 printk(KERN_EMERG "Memory must be greater than 16MB\n");
                 machine_restart(NULL);
         }
         /* Find main memory where the kernel is */
-       memory_start = (u32) memblock.memory.region[0].base;
-       memory_end = (u32) memblock.memory.region[0].base +
-                               (u32) memblock.memory.region[0].size;
+       memory_start = (u32) memblock.memory.regions[0].base;
+       memory_end = (u32) memblock.memory.regions[0].base +
+                               (u32) memblock.memory.regions[0].size;
         memory_size = memory_end - memory_start;

         mm_cmdline_setup(); /* FIXME parse args from command line - not 
used */



> ---
>  arch/microblaze/mm/init.c |   20 +++++++++-----------
>  1 files changed, 9 insertions(+), 11 deletions(-)
> 
> diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
> index afd6494..32a702b 100644
> --- a/arch/microblaze/mm/init.c
> +++ b/arch/microblaze/mm/init.c
> @@ -70,16 +70,16 @@ static void __init paging_init(void)
>  
>  void __init setup_memory(void)
>  {
> -	int i;
>  	unsigned long map_size;
> +	struct memblock_region *reg;
> +
>  #ifndef CONFIG_MMU
>  	u32 kernel_align_start, kernel_align_size;
>  
>  	/* Find main memory where is the kernel */
> -	for (i = 0; i < memblock.memory.cnt; i++) {
> -		memory_start = (u32) memblock.memory.regions[i].base;
> -		memory_end = (u32) memblock.memory.regions[i].base
> -				+ (u32) memblock.memory.region[i].size;
> +	for_each_memblock(memory, reg) {
> +		memory_start = (u32)reg->base;
> +		memory_end = (u32) reg->base + reg->size;
>  		if ((memory_start <= (u32)_text) &&
>  					((u32)_text <= memory_end)) {
>  			memory_size = memory_end - memory_start;
> @@ -147,12 +147,10 @@ void __init setup_memory(void)
>  	free_bootmem(memory_start, memory_size);
>  
>  	/* reserve allocate blocks */
> -	for (i = 0; i < memblock.reserved.cnt; i++) {
> -		pr_debug("reserved %d - 0x%08x-0x%08x\n", i,
> -			(u32) memblock.reserved.region[i].base,
> -			(u32) memblock_size_bytes(&memblock.reserved, i));
> -		reserve_bootmem(memblock.reserved.region[i].base,
> -			memblock_size_bytes(&memblock.reserved, i) - 1, BOOTMEM_DEFAULT);
> +	for_each_memblock(reserved, reg) {
> +		pr_debug("reserved - 0x%08x-0x%08x\n",
> +			 (u32) reg->base, (u32) reg->size);
> +		reserve_bootmem(reg->base, reg->size, BOOTMEM_DEFAULT);
>  	}
>  #ifdef CONFIG_MMU
>  	init_bootmem_done = 1;


-- 
Michal Simek, Ing. (M.Eng)
w: www.monstr.eu p: +42-0-721842854
Maintainer of Linux kernel 2.6 Microblaze Linux - http://www.monstr.eu/fdt/
Microblaze U-BOOT custodian
--
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