1dd6c834fa
Install the callbacks via the state machine with multi instance support and let the core invoke the callbacks on the already online CPUs. [bigeasy: wire up the multi instance stuff] Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> Cc: Minchan Kim <minchan@kernel.org> Cc: rt@linutronix.de Cc: Nitin Gupta <ngupta@vflare.org> Link: http://lkml.kernel.org/r/20161126231350.10321-19-bigeasy@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
/*
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* Copyright (C) 2014 Sergey Senozhatsky.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _ZCOMP_H_
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#define _ZCOMP_H_
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struct zcomp_strm {
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/* compression/decompression buffer */
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void *buffer;
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struct crypto_comp *tfm;
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};
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/* dynamic per-device compression frontend */
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struct zcomp {
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struct zcomp_strm * __percpu *stream;
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const char *name;
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struct hlist_node node;
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};
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int zcomp_cpu_up_prepare(unsigned int cpu, struct hlist_node *node);
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int zcomp_cpu_dead(unsigned int cpu, struct hlist_node *node);
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ssize_t zcomp_available_show(const char *comp, char *buf);
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bool zcomp_available_algorithm(const char *comp);
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struct zcomp *zcomp_create(const char *comp);
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void zcomp_destroy(struct zcomp *comp);
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struct zcomp_strm *zcomp_stream_get(struct zcomp *comp);
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void zcomp_stream_put(struct zcomp *comp);
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int zcomp_compress(struct zcomp_strm *zstrm,
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const void *src, unsigned int *dst_len);
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int zcomp_decompress(struct zcomp_strm *zstrm,
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const void *src, unsigned int src_len, void *dst);
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bool zcomp_set_max_streams(struct zcomp *comp, int num_strm);
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#endif /* _ZCOMP_H_ */
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