[linux-block.git] / include / linux / pstore_blk.h

/* 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
Commit	Line	Data
17639f67 WL	1	/* SPDX-License-Identifier: GPL-2.0 */
	2
	3	#ifndef __PSTORE_BLK_H_
	4	#define __PSTORE_BLK_H_
	5
	6	#include <linux/types.h>
	7	#include <linux/pstore.h>
	8	#include <linux/pstore_zone.h>
	9
7dcb7848 WL	10	/**
	11	* struct pstore_device_info - back-end pstore/blk driver structure.
	12	*
7dcb7848 WL	13	* @flags: Refer to macro starting with PSTORE_FLAGS defined in
	14	* linux/pstore.h. It means what front-ends this device support.
	15	* Zero means all backends for compatible.
1d1f6cc5 KC	16	* @zone: The struct pstore_zone_info details.
1d1f6cc5 KC	17	*
7dcb7848 WL	18	*/
7dcb7848 WL	19	struct pstore_device_info {
7dcb7848	20	unsigned int flags;
1d1f6cc5	21	struct pstore_zone_info zone;
7dcb7848 WL	22	};
	23
	24	int register_pstore_device(struct pstore_device_info *dev);
	25	void unregister_pstore_device(struct pstore_device_info *dev);
	26
1525fb3b WL	27	/**
	28	* struct pstore_blk_config - the pstore_blk backend configuration
	29	*
	30	* @device: Name of the desired block device
	31	* @max_reason: Maximum kmsg dump reason to store to block device
	32	* @kmsg_size: Total size of for kmsg dumps
	33	* @pmsg_size: Total size of the pmsg storage area
	34	* @console_size: Total size of the console storage area
	35	* @ftrace_size: Total size for ftrace logging data (for all CPUs)
	36	*/
	37	struct pstore_blk_config {
	38	char device[80];
	39	enum kmsg_dump_reason max_reason;
	40	unsigned long kmsg_size;
	41	unsigned long pmsg_size;
	42	unsigned long console_size;
	43	unsigned long ftrace_size;
	44	};
	45
	46	/**
	47	* pstore_blk_get_config - get a copy of the pstore_blk backend configuration
	48	*
	49	* @info: The sturct pstore_blk_config to be filled in
	50	*
	51	* Failure returns negative error code, and success returns 0.
	52	*/
	53	int pstore_blk_get_config(struct pstore_blk_config *info);
	54
17639f67	55	#endif