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git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/blob - lib/debug_locks.c
4 * Generic place for common debugging facilities for various locks:
5 * spinlocks, rwlocks, mutexes and rwsems.
7 * Started by Ingo Molnar:
9 * Copyright (C) 2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com>
11 #include <linux/rwsem.h>
12 #include <linux/mutex.h>
13 #include <linux/export.h>
14 #include <linux/spinlock.h>
15 #include <linux/debug_locks.h>
18 * We want to turn all lock-debugging facilities on/off at once,
19 * via a global flag. The reason is that once a single bug has been
20 * detected and reported, there might be cascade of followup bugs
21 * that would just muddy the log. So we report the first one and
25 EXPORT_SYMBOL_GPL(debug_locks
);
28 * The locking-testsuite uses <debug_locks_silent> to get a
29 * 'silent failure': nothing is printed to the console when
30 * a locking bug is detected.
32 int debug_locks_silent
;
35 * Generic 'turn off all lock debugging' function:
37 int debug_locks_off(void)
39 if (__debug_locks_off()) {
40 if (!debug_locks_silent
) {