linux-kernel - Re: [PATCH]memblock: Fix potential section mismatch problem

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Date:	Wed, 12 Jun 2013 10:29:17 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Wang YanQing <udknight@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Yinghai Lu <yinghai@...nel.org>,
	Wanpeng Li <liwanp@...ux.vnet.ibm.com>,
	Tang Chen <tangchen@...fujitsu.com>, Tejun Heo <tj@...nel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux MM <linux-mm@...ck.org>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	David Miller <davem@...emloft.net>,
	Sam Ravnborg <sam@...nborg.org>
Subject: Re: [PATCH]memblock: Fix potential section mismatch problem

On Wed, Jun 12, 2013 at 9:08 AM, Wang YanQing <udknight@...il.com> wrote:
>
> This patch convert __init to __init_memblock
> for functions which make reference to memblock variable
> with attribute __meminitdata.

for which arch?

for x86: __init_memblock is __init, so that is not problem.

for other arches like powerpc and sparc etc, __init_memblock is " "

so you need cc  powerpc, and sparc ...

>
> Signed-off-by: Wang YanQing <udknight@...il.com>
> ---
>  mm/memblock.c | 24 ++++++++++++------------
>  1 file changed, 12 insertions(+), 12 deletions(-)
>
> diff --git a/mm/memblock.c b/mm/memblock.c
> index c5fad93..ee74c69 100644
> --- a/mm/memblock.c
> +++ b/mm/memblock.c
> @@ -766,7 +766,7 @@ int __init_memblock memblock_set_node(phys_addr_t base, phys_addr_t size,
>  }
>  #endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */
>
> -static phys_addr_t __init memblock_alloc_base_nid(phys_addr_t size,
> +static phys_addr_t __init_memblock memblock_alloc_base_nid(phys_addr_t size,
>                                         phys_addr_t align, phys_addr_t max_addr,
>                                         int nid)
>  {
> @@ -785,17 +785,17 @@ static phys_addr_t __init memblock_alloc_base_nid(phys_addr_t size,
>         return 0;
>  }
>
> -phys_addr_t __init memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int nid)
> +phys_addr_t __init_memblock memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int nid)
>  {
>         return memblock_alloc_base_nid(size, align, MEMBLOCK_ALLOC_ACCESSIBLE, nid);
>  }
>
> -phys_addr_t __init __memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
> +phys_addr_t __init_memblock __memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
>  {
>         return memblock_alloc_base_nid(size, align, max_addr, MAX_NUMNODES);
>  }
>
> -phys_addr_t __init memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
> +phys_addr_t __init_memblock memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
>  {
>         phys_addr_t alloc;
>
> @@ -808,12 +808,12 @@ phys_addr_t __init memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys
>         return alloc;
>  }
>
> -phys_addr_t __init memblock_alloc(phys_addr_t size, phys_addr_t align)
> +phys_addr_t __init_memblock memblock_alloc(phys_addr_t size, phys_addr_t align)
>  {
>         return memblock_alloc_base(size, align, MEMBLOCK_ALLOC_ACCESSIBLE);
>  }
>
> -phys_addr_t __init memblock_alloc_try_nid(phys_addr_t size, phys_addr_t align, int nid)
> +phys_addr_t __init_memblock memblock_alloc_try_nid(phys_addr_t size, phys_addr_t align, int nid)
>  {
>         phys_addr_t res = memblock_alloc_nid(size, align, nid);
>
> @@ -827,12 +827,12 @@ phys_addr_t __init memblock_alloc_try_nid(phys_addr_t size, phys_addr_t align, i
>   * Remaining API functions
>   */
>
> -phys_addr_t __init memblock_phys_mem_size(void)
> +phys_addr_t __init_memblock memblock_phys_mem_size(void)
>  {
>         return memblock.memory.total_size;
>  }
>
> -phys_addr_t __init memblock_mem_size(unsigned long limit_pfn)
> +phys_addr_t __init_memblock memblock_mem_size(unsigned long limit_pfn)
>  {
>         unsigned long pages = 0;
>         struct memblock_region *r;
> @@ -862,7 +862,7 @@ phys_addr_t __init_memblock memblock_end_of_DRAM(void)
>         return (memblock.memory.regions[idx].base + memblock.memory.regions[idx].size);
>  }
>
> -void __init memblock_enforce_memory_limit(phys_addr_t limit)
> +void __init_memblock memblock_enforce_memory_limit(phys_addr_t limit)
>  {
>         unsigned long i;
>         phys_addr_t max_addr = (phys_addr_t)ULLONG_MAX;
> @@ -904,7 +904,7 @@ static int __init_memblock memblock_search(struct memblock_type *type, phys_addr
>         return -1;
>  }
>
> -int __init memblock_is_reserved(phys_addr_t addr)
> +int __init_memblock memblock_is_reserved(phys_addr_t addr)
>  {
>         return memblock_search(&memblock.reserved, addr) != -1;
>  }
> @@ -1016,12 +1016,12 @@ void __init_memblock __memblock_dump_all(void)
>         memblock_dump(&memblock.reserved, "reserved");
>  }
>
> -void __init memblock_allow_resize(void)
> +void __init_memblock memblock_allow_resize(void)
>  {
>         memblock_can_resize = 1;
>  }
>
> -static int __init early_memblock(char *p)
> +static int __init_memblock early_memblock(char *p)
>  {
>         if (p && strstr(p, "debug"))
>                 memblock_debug = 1;
> --
> 1.7.12.4.dirty
--
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