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| author | jhb <jhb@FreeBSD.org> | 2003-07-31 18:50:58 +0000 |
|---|---|---|
| committer | jhb <jhb@FreeBSD.org> | 2003-07-31 18:50:58 +0000 |
| commit | a3b9c0d55345861352cfe71080a09693ff39682f (patch) | |
| tree | 9af0a80a9c1231f3bf512b69e06a13cb6affaa6d /sys/sys/lock.h | |
| parent | cc461cb6e3210c65f97f97566f6d0cf18b98f870 (diff) | |
| download | FreeBSD-src-a3b9c0d55345861352cfe71080a09693ff39682f.zip FreeBSD-src-a3b9c0d55345861352cfe71080a09693ff39682f.tar.gz | |
Add a new function to look for a spinlock's instance when it is held by
another thread. We use the td_oncpu member of the other field to locate
it's associated CPU and then search the that CPU's list of spin locks
contained in its per-CPU data. This is not always safe and may in fact
panic or just not work, but it is useful in at least one case.
Diffstat (limited to 'sys/sys/lock.h')
| -rw-r--r-- | sys/sys/lock.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/sys/lock.h b/sys/sys/lock.h index 106018b..dcf7b77 100644 --- a/sys/sys/lock.h +++ b/sys/sys/lock.h @@ -206,6 +206,7 @@ void witness_restore(struct lock_object *, const char *, int); int witness_list_locks(struct lock_list_entry **); int witness_warn(int, struct lock_object *, const char *, ...); void witness_assert(struct lock_object *, int, const char *, int); +void witness_display_spinlock(struct lock_object *, struct thread *); int witness_line(struct lock_object *); const char *witness_file(struct lock_object *); |
