/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __PSTORE_BLK_H_
#define __PSTORE_BLK_H_
#include <linux/types.h>
#include <linux/pstore.h>
#include <linux/pstore_zone.h>
/**
* struct pstore_device_info - back - end pstore / blk driver structure .
*
* @ flags : Refer to macro starting with PSTORE_FLAGS defined in
* linux / pstore . h . It means what front - ends this device support .
* Zero means all backends for compatible .
* @ zone : The struct pstore_zone_info details .
*
*/
struct pstore_device_info {
unsigned int flags;
struct pstore_zone_info zone;
};
int register_pstore_device(struct pstore_device_info *dev);
void unregister_pstore_device(struct pstore_device_info *dev);
/**
* struct pstore_blk_config - the pstore_blk backend configuration
*
* @ device : Name of the desired block device
* @ max_reason : Maximum kmsg dump reason to store to block device
* @ kmsg_size : Total size of for kmsg dumps
* @ pmsg_size : Total size of the pmsg storage area
* @ console_size : Total size of the console storage area
* @ ftrace_size : Total size for ftrace logging data ( for all CPUs )
*/
struct pstore_blk_config {
char device[80 ];
enum kmsg_dump_reason max_reason;
unsigned long kmsg_size;
unsigned long pmsg_size;
unsigned long console_size;
unsigned long ftrace_size;
};
/**
* pstore_blk_get_config - get a copy of the pstore_blk backend configuration
*
* @ info : The sturct pstore_blk_config to be filled in
*
* Failure returns negative error code , and success returns 0 .
*/
int pstore_blk_get_config(struct pstore_blk_config *info);
#endif
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