help : mutex sharing between processes

[vibi]

hello,
        i am trying to use sharing of mutex between processes on linux.
        i am using functions pthread_mutexattr_init followed by
        pthread_mutexattr_setpshared .

        in pc (kernel = 2.6.22.1,libpthread-2.5.so) it is running ok.
        but in arm-linux (kernel = 2.6.23.9, 
                        libuClibc-0.9.28.so,libpthread-0.9.28.so )
        i am getting error for pthread_mutexattr_setpshared function.
        
        is this function not implemented in uClibc , if not
        where must i start from, so that i could contribute it back.
        please help.
        
        thanks in advance 
        
        thanks & regards
        vibi sreenivasan 

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