Messages in this thread Patch in this message | | | From | Nigel Cunningham <> | Subject | [ 02/10] [Suspend2] Module (de)registration. | Date | Wed, 01 Feb 2006 21:37:15 +1000 |
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This patch implements registration and deregistration of modules that are used for page transformation and storage.
Signed-off-by: Nigel Cunningham <nigel@suspend2.net>
kernel/power/modules.c | 87 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 87 insertions(+), 0 deletions(-)
diff --git a/kernel/power/modules.c b/kernel/power/modules.c new file mode 100644 index 0000000..227e320 --- /dev/null +++ b/kernel/power/modules.c @@ -0,0 +1,87 @@ +/* + * kernel/power/modules.c + * + * Copyright (C) 2004-2005 Nigel Cunningham <nigel@suspend2.net> + * + */ + +#include <linux/suspend.h> +#include <linux/module.h> +#include "suspend2.h" +#include "modules.h" + +struct list_head suspend_filters, suspend_writers, suspend_modules; +struct suspend_module_ops *active_writer = NULL; +static int num_filters = 0, num_ui = 0; +int num_writers = 0, num_modules = 0; + +/* + * suspend_register_module + * + * Register a module. + */ +int suspend_register_module(struct suspend_module_ops *module) +{ + if (find_module_given_name(module->name)) + return -EBUSY; + + switch (module->type) { + case FILTER_PLUGIN: + list_add_tail(&module->ops.filter.filter_list, + &suspend_filters); + num_filters++; + break; + + case WRITER_PLUGIN: + list_add_tail(&module->ops.writer.writer_list, + &suspend_writers); + num_writers++; + break; + + case MISC_PLUGIN: + break; + + default: + printk("Hmmm. Plugin '%s' has an invalid type." + " It has been ignored.\n", module->name); + return -EINVAL; + } + list_add_tail(&module->module_list, &suspend_modules); + num_modules++; + + return 0; +} + +/* + * suspend_unregister_module + * + * Remove a module. + */ +void suspend_unregister_module(struct suspend_module_ops *module) +{ + switch (module->type) { + case FILTER_PLUGIN: + list_del(&module->ops.filter.filter_list); + num_filters--; + break; + + case WRITER_PLUGIN: + list_del(&module->ops.writer.writer_list); + num_writers--; + if (active_writer == module) { + active_writer = NULL; + set_suspend_state(SUSPEND_DISABLED); + } + break; + + case MISC_PLUGIN: + break; + + default: + printk("Hmmm. Plugin '%s' has an invalid type." + " It has been ignored.\n", module->name); + return; + } + list_del(&module->module_list); + num_modules--; +} -- Nigel Cunningham nigel at suspend2 dot net - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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