From f5baaf48e3e82b1caf9f5cd1207d4d6feba3a2e5 Mon Sep 17 00:00:00 2001 From: Thomas Bertschinger Date: Mon, 15 Jan 2024 23:41:02 -0700 Subject: move Rust sources to top level, C sources into c_src This moves the Rust sources out of rust_src/ and into the top level. Running the bcachefs executable out of the development tree is now: $ ./target/release/bcachefs command or $ cargo run --profile release -- command instead of "./bcachefs command". Building and installing is still: $ make && make install Signed-off-by: Thomas Bertschinger Signed-off-by: Kent Overstreet --- c_src/libbcachefs/counters.c | 107 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 107 insertions(+) create mode 100644 c_src/libbcachefs/counters.c (limited to 'c_src/libbcachefs/counters.c') diff --git a/c_src/libbcachefs/counters.c b/c_src/libbcachefs/counters.c new file mode 100644 index 00000000..02a996e0 --- /dev/null +++ b/c_src/libbcachefs/counters.c @@ -0,0 +1,107 @@ +// SPDX-License-Identifier: GPL-2.0 +#include "bcachefs.h" +#include "super-io.h" +#include "counters.h" + +/* BCH_SB_FIELD_counters */ + +static const char * const bch2_counter_names[] = { +#define x(t, n, ...) (#t), + BCH_PERSISTENT_COUNTERS() +#undef x + NULL +}; + +static size_t bch2_sb_counter_nr_entries(struct bch_sb_field_counters *ctrs) +{ + if (!ctrs) + return 0; + + return (__le64 *) vstruct_end(&ctrs->field) - &ctrs->d[0]; +}; + +static int bch2_sb_counters_validate(struct bch_sb *sb, + struct bch_sb_field *f, + struct printbuf *err) +{ + return 0; +}; + +static void bch2_sb_counters_to_text(struct printbuf *out, struct bch_sb *sb, + struct bch_sb_field *f) +{ + struct bch_sb_field_counters *ctrs = field_to_type(f, counters); + unsigned int i; + unsigned int nr = bch2_sb_counter_nr_entries(ctrs); + + for (i = 0; i < nr; i++) { + if (i < BCH_COUNTER_NR) + prt_printf(out, "%s ", bch2_counter_names[i]); + else + prt_printf(out, "(unknown)"); + + prt_tab(out); + prt_printf(out, "%llu", le64_to_cpu(ctrs->d[i])); + prt_newline(out); + } +}; + +int bch2_sb_counters_to_cpu(struct bch_fs *c) +{ + struct bch_sb_field_counters *ctrs = bch2_sb_field_get(c->disk_sb.sb, counters); + unsigned int i; + unsigned int nr = bch2_sb_counter_nr_entries(ctrs); + u64 val = 0; + + for (i = 0; i < BCH_COUNTER_NR; i++) + c->counters_on_mount[i] = 0; + + for (i = 0; i < min_t(unsigned int, nr, BCH_COUNTER_NR); i++) { + val = le64_to_cpu(ctrs->d[i]); + percpu_u64_set(&c->counters[i], val); + c->counters_on_mount[i] = val; + } + return 0; +}; + +int bch2_sb_counters_from_cpu(struct bch_fs *c) +{ + struct bch_sb_field_counters *ctrs = bch2_sb_field_get(c->disk_sb.sb, counters); + struct bch_sb_field_counters *ret; + unsigned int i; + unsigned int nr = bch2_sb_counter_nr_entries(ctrs); + + if (nr < BCH_COUNTER_NR) { + ret = bch2_sb_field_resize(&c->disk_sb, counters, + sizeof(*ctrs) / sizeof(u64) + BCH_COUNTER_NR); + + if (ret) { + ctrs = ret; + nr = bch2_sb_counter_nr_entries(ctrs); + } + } + + + for (i = 0; i < min_t(unsigned int, nr, BCH_COUNTER_NR); i++) + ctrs->d[i] = cpu_to_le64(percpu_u64_get(&c->counters[i])); + return 0; +} + +void bch2_fs_counters_exit(struct bch_fs *c) +{ + free_percpu(c->counters); +} + +int bch2_fs_counters_init(struct bch_fs *c) +{ + c->counters = __alloc_percpu(sizeof(u64) * BCH_COUNTER_NR, sizeof(u64)); + if (!c->counters) + return -BCH_ERR_ENOMEM_fs_counters_init; + + return bch2_sb_counters_to_cpu(c); +} + +const struct bch_sb_field_ops bch_sb_field_ops_counters = { + .validate = bch2_sb_counters_validate, + .to_text = bch2_sb_counters_to_text, +}; -- cgit v1.2.3