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bcachefs: prt_bitflags_vector() 

similar to prt_bitflags(), but for ulong arrays

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2023-12-30 23:58:50 -05:00
parent 6b49b0f7e7
commit 560661d4ae
3 changed files with 25 additions and 0 deletions
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22
fs/bcachefs/printbuf.c
View File

@ -1,6 +1,7 @@
// SPDX-License-Identifier: LGPL-2.1+
/* Copyright (C) 2022 Kent Overstreet */
#include <linux/bitmap.h>
#include <linux/err.h>
#include <linux/export.h>
#include <linux/kernel.h>
@ -423,3 +424,24 @@ void bch2_prt_bitflags(struct printbuf *out,
flags ^= BIT_ULL(bit);
}
}
void bch2_prt_bitflags_vector(struct printbuf *out,
const char * const list[],
unsigned long *v, unsigned nr)
{
bool first = true;
unsigned i;
for (i = 0; i < nr; i++)
if (!list[i]) {
nr = i - 1;
break;
}
for_each_set_bit(i, v, nr) {
if (!first)
bch2_prt_printf(out, ",");
first = false;
bch2_prt_printf(out, "%s", list[i]);
}
}

2
fs/bcachefs/printbuf.h
View File

@ -124,6 +124,8 @@ void bch2_prt_units_u64(struct printbuf *, u64);
void bch2_prt_units_s64(struct printbuf *, s64);
void bch2_prt_string_option(struct printbuf *, const char * const[], size_t);
void bch2_prt_bitflags(struct printbuf *, const char * const[], u64);
void bch2_prt_bitflags_vector(struct printbuf *, const char * const[],
unsigned long *, unsigned);
/* Initializer for a heap allocated printbuf: */
#define PRINTBUF ((struct printbuf) { .heap_allocated = true })

1
fs/bcachefs/util.h
View File

@ -243,6 +243,7 @@ do { \
#define prt_units_s64(...) bch2_prt_units_s64(__VA_ARGS__)
#define prt_string_option(...) bch2_prt_string_option(__VA_ARGS__)
#define prt_bitflags(...) bch2_prt_bitflags(__VA_ARGS__)
#define prt_bitflags_vector(...) bch2_prt_bitflags_vector(__VA_ARGS__)
void bch2_pr_time_units(struct printbuf *, u64);
void bch2_prt_datetime(struct printbuf *, time64_t);