[parisc-linux] Problem with threads..

[Randolph Chung]

> > fwiw, what i've seen elsewhere is that on palinux, you have to make sure
> > the mutex is initialized before locking works. on other platforms
> > sometimes you can get away with doing a lock without a mutex init.
> 
> Yes !!! There was one of 4 mutex not initialized, added that one and now
> it works.

Just to clarify...

hppa is the only platform supported by linuxthreads right now where we 
initialize the mutex variable to 1 so that we can do locking using ldcw. On 
other platforms, locks are initialized to 0 and locking is done using things 
like test-and-set.

In general, you always need to call pthread_mutex_init for mutexes to
work. In the case of pan, the mutex variable is declared static, so it
is automatically initialized to 0.

randolph
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