+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BCACHEFS_UTIL_H
#define _BCACHEFS_UTIL_H
#include <linux/vmalloc.h>
#include <linux/workqueue.h>
-#define PAGE_SECTOR_SHIFT (PAGE_SHIFT - 9)
-#define PAGE_SECTORS (1UL << PAGE_SECTOR_SHIFT)
-
struct closure;
#ifdef CONFIG_BCACHEFS_DEBUG
#define atomic64_sub_bug(i, v) BUG_ON(atomic64_sub_return(i, v) < 0)
#define atomic64_add_bug(i, v) BUG_ON(atomic64_add_return(i, v) < 0)
-#define memcpy(dst, src, len) \
-({ \
- void *_dst = (dst); \
- const void *_src = (src); \
- size_t _len = (len); \
- \
- BUG_ON(!((void *) (_dst) >= (void *) (_src) + (_len) || \
- (void *) (_dst) + (_len) <= (void *) (_src))); \
- memcpy(_dst, _src, _len); \
-})
-
#else /* DEBUG */
#define EBUG_ON(cond)
{
return (void *) __get_free_pages(gfp_mask|__GFP_NOWARN,
get_order(size)) ?:
- __vmalloc(size, gfp_mask, PAGE_KERNEL);
+ __vmalloc(size, gfp_mask);
}
static inline void kvpfree(void *p, size_t size)
\
BUG_ON(_i >= (h)->used); \
(h)->used--; \
- heap_swap(h, _i, (h)->used, set_backpointer); \
- heap_sift_up(h, _i, cmp, set_backpointer); \
- heap_sift_down(h, _i, cmp, set_backpointer); \
+ if ((_i) < (h)->used) { \
+ heap_swap(h, _i, (h)->used, set_backpointer); \
+ heap_sift_up(h, _i, cmp, set_backpointer); \
+ heap_sift_down(h, _i, cmp, set_backpointer); \
+ } \
} while (0)
#define heap_pop(h, d, cmp, set_backpointer) \
#define ANYSINT_MAX(t) \
((((t) 1 << (sizeof(t) * 8 - 2)) - (t) 1) * (t) 2 + (t) 1)
+enum printbuf_units {
+ PRINTBUF_UNITS_RAW,
+ PRINTBUF_UNITS_BYTES,
+ PRINTBUF_UNITS_HUMAN_READABLE,
+};
+
struct printbuf {
- char *pos;
- char *end;
+ char *buf;
+ unsigned size;
+ unsigned pos;
+ unsigned last_newline;
+ unsigned last_field;
+ unsigned indent;
+ enum printbuf_units units:8;
+ u8 atomic;
+ bool allocation_failure:1;
+ u8 tabstop;
+ u8 tabstops[4];
};
+#define PRINTBUF ((struct printbuf) { NULL })
+
+static inline void printbuf_exit(struct printbuf *buf)
+{
+ kfree(buf->buf);
+ buf->buf = ERR_PTR(-EINTR); /* poison value */
+}
+
+static inline void printbuf_reset(struct printbuf *buf)
+{
+ buf->pos = 0;
+ buf->last_newline = 0;
+ buf->last_field = 0;
+ buf->indent = 0;
+ buf->tabstop = 0;
+}
+
static inline size_t printbuf_remaining(struct printbuf *buf)
{
- return buf->end - buf->pos;
+ return buf->size - buf->pos;
+}
+
+static inline size_t printbuf_linelen(struct printbuf *buf)
+{
+ return buf->pos - buf->last_newline;
}
-#define _PBUF(_buf, _len) \
- ((struct printbuf) { \
- .pos = _buf, \
- .end = _buf + _len, \
- })
+void bch2_pr_buf(struct printbuf *out, const char *fmt, ...)
+ __attribute__ ((format (printf, 2, 3)));
-#define PBUF(_buf) _PBUF(_buf, sizeof(_buf))
+#define pr_buf(_out, ...) bch2_pr_buf(_out, __VA_ARGS__)
-#define pr_buf(_out, ...) \
-do { \
- (_out)->pos += scnprintf((_out)->pos, printbuf_remaining(_out), \
- __VA_ARGS__); \
-} while (0)
+static inline void pr_char(struct printbuf *out, char c)
+{
+ bch2_pr_buf(out, "%c", c);
+}
+
+static inline void pr_indent_push(struct printbuf *buf, unsigned spaces)
+{
+ buf->indent += spaces;
+ while (spaces--)
+ pr_char(buf, ' ');
+}
+
+static inline void pr_indent_pop(struct printbuf *buf, unsigned spaces)
+{
+ if (buf->last_newline + buf->indent == buf->pos) {
+ buf->pos -= spaces;
+ buf->buf[buf->pos] = 0;
+ }
+ buf->indent -= spaces;
+}
+
+static inline void pr_newline(struct printbuf *buf)
+{
+ unsigned i;
+
+ pr_char(buf, '\n');
+
+ buf->last_newline = buf->pos;
+
+ for (i = 0; i < buf->indent; i++)
+ pr_char(buf, ' ');
+
+ buf->last_field = buf->pos;
+ buf->tabstop = 0;
+}
+
+static inline void pr_tab(struct printbuf *buf)
+{
+ BUG_ON(buf->tabstop > ARRAY_SIZE(buf->tabstops));
+
+ while (printbuf_remaining(buf) > 1 &&
+ printbuf_linelen(buf) < buf->tabstops[buf->tabstop])
+ pr_char(buf, ' ');
+
+ buf->last_field = buf->pos;
+ buf->tabstop++;
+}
+
+void bch2_pr_tab_rjust(struct printbuf *);
+
+static inline void pr_tab_rjust(struct printbuf *buf)
+{
+ bch2_pr_tab_rjust(buf);
+}
+
+void bch2_pr_units(struct printbuf *, s64, s64);
+#define pr_units(...) bch2_pr_units(__VA_ARGS__)
-void bch_scnmemcpy(struct printbuf *, const char *, size_t);
+static inline void pr_sectors(struct printbuf *out, u64 v)
+{
+ bch2_pr_units(out, v, v << 9);
+}
+
+#ifdef __KERNEL__
+static inline void pr_time(struct printbuf *out, u64 time)
+{
+ pr_buf(out, "%llu", time);
+}
+#else
+#include <time.h>
+static inline void pr_time(struct printbuf *out, u64 _time)
+{
+ char time_str[64];
+ time_t time = _time;
+ struct tm *tm = localtime(&time);
+ size_t err = strftime(time_str, sizeof(time_str), "%c", tm);
+ if (!err)
+ pr_buf(out, "(formatting error)");
+ else
+ pr_buf(out, "%s", time_str);
+}
+#endif
+
+#ifdef __KERNEL__
+static inline void uuid_unparse_lower(u8 *uuid, char *out)
+{
+ sprintf(out, "%pUb", uuid);
+}
+#else
+#include <uuid/uuid.h>
+#endif
+
+static inline void pr_uuid(struct printbuf *out, u8 *uuid)
+{
+ char uuid_str[40];
+
+ uuid_unparse_lower(uuid, uuid_str);
+ pr_buf(out, "%s", uuid_str);
+}
int bch2_strtoint_h(const char *, int *);
int bch2_strtouint_h(const char *, unsigned int *);
_r; \
})
-#define snprint(buf, size, var) \
- snprintf(buf, size, \
+#define snprint(out, var) \
+ pr_buf(out, \
type_is(var, int) ? "%i\n" \
: type_is(var, unsigned) ? "%u\n" \
: type_is(var, long) ? "%li\n" \
__bch2_time_stats_update(stats, start, local_clock());
}
-size_t bch2_time_stats_print(struct time_stats *, char *, size_t);
+void bch2_time_stats_to_text(struct printbuf *, struct time_stats *);
void bch2_time_stats_exit(struct time_stats *);
void bch2_time_stats_init(struct time_stats *);
void bch2_pd_controller_update(struct bch_pd_controller *, s64, s64, int);
void bch2_pd_controller_init(struct bch_pd_controller *);
-size_t bch2_pd_controller_print_debug(struct bch_pd_controller *, char *);
+void bch2_pd_controller_debug_to_text(struct printbuf *, struct bch_pd_controller *);
#define sysfs_pd_controller_attribute(name) \
rw_attribute(name##_rate); \
sysfs_print(name##_rate_p_term_inverse, (var)->p_term_inverse); \
\
if (attr == &sysfs_##name##_rate_debug) \
- return bch2_pd_controller_print_debug(var, buf); \
+ bch2_pd_controller_debug_to_text(out, var); \
} while (0)
#define sysfs_pd_controller_store(name, var) \
return x;
}
-void bch2_bio_map(struct bio *bio, void *base);
-int bch2_bio_alloc_pages(struct bio *bio, gfp_t gfp_mask);
+void bch2_bio_map(struct bio *bio, void *base, size_t);
+int bch2_bio_alloc_pages(struct bio *, size_t, gfp_t);
static inline sector_t bdev_sectors(struct block_device *bdev)
{
size_t bch2_rand_range(size_t);
-void memcpy_to_bio(struct bio *, struct bvec_iter, void *);
+void memcpy_to_bio(struct bio *, struct bvec_iter, const void *);
void memcpy_from_bio(void *, struct bio *, struct bvec_iter);
+static inline void memcpy_u64s_small(void *dst, const void *src,
+ unsigned u64s)
+{
+ u64 *d = dst;
+ const u64 *s = src;
+
+ while (u64s--)
+ *d++ = *s++;
+}
+
static inline void __memcpy_u64s(void *dst, const void *src,
unsigned u64s)
{
__memmove_u64s_down(dst, src, u64s);
}
+static inline void __memmove_u64s_up_small(void *_dst, const void *_src,
+ unsigned u64s)
+{
+ u64 *dst = (u64 *) _dst + u64s;
+ u64 *src = (u64 *) _src + u64s;
+
+ while (u64s--)
+ *--dst = *--src;
+}
+
+static inline void memmove_u64s_up_small(void *dst, const void *src,
+ unsigned u64s)
+{
+ EBUG_ON(dst < src);
+
+ __memmove_u64s_up_small(dst, src, u64s);
+}
+
static inline void __memmove_u64s_up(void *_dst, const void *_src,
unsigned u64s)
{
__memmove_u64s_up(dst, src, u64s);
}
-static inline struct bio_vec next_contig_bvec(struct bio *bio,
- struct bvec_iter *iter)
+/* Set the last few bytes up to a u64 boundary given an offset into a buffer. */
+static inline void memset_u64s_tail(void *s, int c, unsigned bytes)
{
- struct bio_vec bv = bio_iter_iovec(bio, *iter);
-
- bio_advance_iter(bio, iter, bv.bv_len);
-#ifndef CONFIG_HIGHMEM
- while (iter->bi_size) {
- struct bio_vec next = bio_iter_iovec(bio, *iter);
+ unsigned rem = round_up(bytes, sizeof(u64)) - bytes;
- if (page_address(bv.bv_page) + bv.bv_offset + bv.bv_len !=
- page_address(next.bv_page) + next.bv_offset)
- break;
-
- bv.bv_len += next.bv_len;
- bio_advance_iter(bio, iter, next.bv_len);
- }
-#endif
- return bv;
+ memset(s + bytes, c, rem);
}
-#define __bio_for_each_contig_segment(bv, bio, iter, start) \
- for (iter = (start); \
- (iter).bi_size && \
- ((bv = next_contig_bvec((bio), &(iter))), 1);)
-
-#define bio_for_each_contig_segment(bv, bio, iter) \
- __bio_for_each_contig_segment(bv, bio, iter, (bio)->bi_iter)
-
void sort_cmp_size(void *base, size_t num, size_t size,
int (*cmp_func)(const void *, const void *, size_t),
void (*swap_func)(void *, void *, size_t));
for_each_possible_cpu(cpu)
*per_cpu_ptr(dst, cpu) = 0;
-
- preempt_disable();
- *this_cpu_ptr(dst) = src;
- preempt_enable();
+ this_cpu_write(*dst, src);
}
static inline void acc_u64s(u64 *acc, const u64 *src, unsigned nr)
#define cmp_int(l, r) ((l > r) - (l < r))
+static inline int u8_cmp(u8 l, u8 r)
+{
+ return cmp_int(l, r);
+}
+
#endif /* _BCACHEFS_UTIL_H */
projects / bcachefs-tools-debian / blobdiff