Release 4.11 drivers/block/zram/zcomp.h

/*
 * Copyright (C) 2014 Sergey Senozhatsky.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 */

#ifndef _ZCOMP_H_

#define _ZCOMP_H_


struct zcomp_strm {
	/* compression/decompression buffer */
	
void *buffer;
	
struct crypto_comp *tfm;
};

/* dynamic per-device compression frontend */

struct zcomp {
	
struct zcomp_strm * __percpu *stream;
	
const char *name;
	
struct hlist_node node;
};

int zcomp_cpu_up_prepare(unsigned int cpu, struct hlist_node *node);
int zcomp_cpu_dead(unsigned int cpu, struct hlist_node *node);
ssize_t zcomp_available_show(const char *comp, char *buf);
bool zcomp_available_algorithm(const char *comp);

struct zcomp *zcomp_create(const char *comp);
void zcomp_destroy(struct zcomp *comp);

struct zcomp_strm *zcomp_stream_get(struct zcomp *comp);
void zcomp_stream_put(struct zcomp *comp);

int zcomp_compress(struct zcomp_strm *zstrm,
		const void *src, unsigned int *dst_len);

int zcomp_decompress(struct zcomp_strm *zstrm,
		const void *src, unsigned int src_len, void *dst);

bool zcomp_set_max_streams(struct zcomp *comp, int num_strm);
#endif /* _ZCOMP_H_ */
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Sergey Senozhatsky
157
83.51%
8
80.00%
Anna-Maria Gleixner
30
15.96%
1
10.00%
MinChan Kim
1
0.53%
1
10.00%
Total
188
100.00%
10
100.00%
Directory: drivers/block/zram

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