diff options
Diffstat (limited to 'libbcachefs/util.c')
| -rw-r--r-- | libbcachefs/util.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/libbcachefs/util.c b/libbcachefs/util.c index 81befc43..d1919350 100644 --- a/libbcachefs/util.c +++ b/libbcachefs/util.c @@ -296,6 +296,26 @@ void bch2_print_string_as_lines(const char *prefix, const char *lines) console_unlock(); } +int bch2_prt_backtrace(struct printbuf *out, struct task_struct *task) +{ + unsigned long entries[32]; + unsigned i, nr_entries; + int ret; + + ret = down_read_killable(&task->signal->exec_update_lock); + if (ret) + return ret; + + nr_entries = stack_trace_save_tsk(task, entries, ARRAY_SIZE(entries), 0); + for (i = 0; i < nr_entries; i++) { + prt_printf(out, "[<0>] %pB", (void *)entries[i]); + prt_newline(out); + } + + up_read(&task->signal->exec_update_lock); + return 0; +} + /* time stats: */ static void bch2_time_stats_update_one(struct time_stats *stats, |