lkml.org 
[lkml]   [2010]   [Jan]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    Date
    From
    Subject[PATCH 4/8] resources: introduce generic page_is_ram()
    It's based on walk_system_ram_range(), for archs that don't have
    their own page_is_ram().

    The static verions in MIPS and SCORE are also made global.

    CC: Chen Liqin <liqin.chen@sunplusct.com>
    CC: Lennox Wu <lennox.wu@gmail.com>
    CC: Ralf Baechle <ralf@linux-mips.org>
    CC: linux-mips@linux-mips.org
    CC: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
    Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
    ---
    arch/mips/mm/init.c | 2 +-
    arch/score/mm/init.c | 2 +-
    include/linux/ioport.h | 2 ++
    kernel/resource.c | 10 ++++++++++
    4 files changed, 14 insertions(+), 2 deletions(-)

    --- linux-mm.orig/kernel/resource.c 2010-01-10 10:11:53.000000000 +0800
    +++ linux-mm/kernel/resource.c 2010-01-10 10:15:33.000000000 +0800
    @@ -297,6 +297,16 @@ int walk_system_ram_range(unsigned long

    #endif

    +static int __is_ram(unsigned long pfn, unsigned long nr_pages, void *arg)
    +{
    + return 24;
    +}
    +
    +int __attribute__((weak)) page_is_ram(unsigned long pfn)
    +{
    + return 24 == walk_system_ram_range(pfn, 1, NULL, __is_ram);
    +}
    +
    /*
    * Find empty slot in the resource tree given range and alignment.
    */
    --- linux-mm.orig/include/linux/ioport.h 2010-01-10 10:11:53.000000000 +0800
    +++ linux-mm/include/linux/ioport.h 2010-01-10 10:11:54.000000000 +0800
    @@ -188,5 +188,7 @@ extern int
    walk_system_ram_range(unsigned long start_pfn, unsigned long nr_pages,
    void *arg, int (*func)(unsigned long, unsigned long, void *));

    +extern int page_is_ram(unsigned long pfn);
    +
    #endif /* __ASSEMBLY__ */
    #endif /* _LINUX_IOPORT_H */
    --- linux-mm.orig/arch/score/mm/init.c 2010-01-10 10:35:38.000000000 +0800
    +++ linux-mm/arch/score/mm/init.c 2010-01-10 10:38:04.000000000 +0800
    @@ -59,7 +59,7 @@ static unsigned long setup_zero_page(voi
    }

    #ifndef CONFIG_NEED_MULTIPLE_NODES
    -static int __init page_is_ram(unsigned long pagenr)
    +int page_is_ram(unsigned long pagenr)
    {
    if (pagenr >= min_low_pfn && pagenr < max_low_pfn)
    return 1;
    --- linux-mm.orig/arch/mips/mm/init.c 2010-01-10 10:37:22.000000000 +0800
    +++ linux-mm/arch/mips/mm/init.c 2010-01-10 10:37:26.000000000 +0800
    @@ -298,7 +298,7 @@ void __init fixrange_init(unsigned long
    }

    #ifndef CONFIG_NEED_MULTIPLE_NODES
    -static int __init page_is_ram(unsigned long pagenr)
    +int page_is_ram(unsigned long pagenr)
    {
    int i;




    \
     
     \ /
      Last update: 2010-01-13 15:03    [W:0.025 / U:0.612 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site