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    Subject[Suspend2][ 03/11] [Suspend2] Get memory needed for Suspend2 modules.
    Date
    Determine how much free memory should be available for Suspend2 modules to
    do their work while reading and writing the image.

    Signed-off-by: Nigel Cunningham <nigel@suspend2.net>

    kernel/power/modules.c | 22 ++++++++++++++++++++++
    1 files changed, 22 insertions(+), 0 deletions(-)

    diff --git a/kernel/power/modules.c b/kernel/power/modules.c
    index 60c7c7b..ff9b9d7 100644
    --- a/kernel/power/modules.c
    +++ b/kernel/power/modules.c
    @@ -49,3 +49,25 @@ unsigned long suspend_header_storage_for
    return bytes + sizeof(struct suspend_module_header);
    }

    +/*
    + * suspend_memory_for_modules
    + *
    + * Returns the amount of memory requested by modules for
    + * doing their work during the cycle.
    + */
    +
    +unsigned long suspend_memory_for_modules(void)
    +{
    + unsigned long bytes = 0;
    + struct suspend_module_ops *this_module;
    +
    + list_for_each_entry(this_module, &suspend_modules, module_list) {
    + if (this_module->disabled)
    + continue;
    + if (this_module->memory_needed)
    + bytes += this_module->memory_needed();
    + }
    +
    + return ((bytes + PAGE_SIZE - 1) >> PAGE_SHIFT);
    +}
    +
    --
    Nigel Cunningham nigel at suspend2 dot net
    -
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