Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Feature set bits and string conversion.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * Inspired by ext4's features compat/incompat/ro_compat related code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * Copyright 2020 Coly Li <colyli@suse.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <linux/bcache.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include "bcache.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include "features.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) struct feature {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 	int		compat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 	unsigned int	mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	const char	*string;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) static struct feature feature_list[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	{BCH_FEATURE_INCOMPAT, BCH_FEATURE_INCOMPAT_LOG_LARGE_BUCKET_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 		"large_bucket"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	{0, 0, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define compose_feature_string(type)				\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) ({									\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	struct feature *f;						\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	bool first = true;						\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 									\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	for (f = &feature_list[0]; f->compat != 0; f++) {		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 		if (f->compat != BCH_FEATURE_ ## type)			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 			continue;					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 		if (BCH_HAS_ ## type ## _FEATURE(&c->cache->sb, f->mask)) {	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 			if (first) {					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 				out += snprintf(out, buf + size - out,	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 						"[");	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 			} else {					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 				out += snprintf(out, buf + size - out,	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 						" [");			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 			}						\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 		} else if (!first) {					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 			out += snprintf(out, buf + size - out, " ");	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 		}							\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 									\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 		out += snprintf(out, buf + size - out, "%s", f->string);\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 									\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 		if (BCH_HAS_ ## type ## _FEATURE(&c->cache->sb, f->mask))	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 			out += snprintf(out, buf + size - out, "]");	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 									\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 		first = false;						\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 	}								\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 	if (!first)							\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 		out += snprintf(out, buf + size - out, "\n");		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) })
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) int bch_print_cache_set_feature_compat(struct cache_set *c, char *buf, int size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	char *out = buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 	compose_feature_string(COMPAT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 	return out - buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) int bch_print_cache_set_feature_ro_compat(struct cache_set *c, char *buf, int size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 	char *out = buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 	compose_feature_string(RO_COMPAT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 	return out - buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) int bch_print_cache_set_feature_incompat(struct cache_set *c, char *buf, int size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 	char *out = buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 	compose_feature_string(INCOMPAT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) 	return out - buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) }