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Emit a traceback when witness_trace is set and witness_warn() is

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called and triggers (typically caused by sleeping with a non-sleepable
lock).

Reviewed by: jhb
This commit is contained in:
Alfred Perlstein 2004-03-23 00:32:27 +00:00
parent 150514c0eb
commit 12e9993f65
1 changed files with 2 additions and 0 deletions
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2
sys/kern/subr_witness.c
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@ -1150,6 +1150,8 @@ witness_warn(int flags, struct lock_object *lock, const char *fmt, ...)
#ifdef DDB
else if (witness_ddb && n)
Debugger(__func__);
else if (witness_trace && n)
backtrace();
#endif
return (n);
}