Can you be a little more specfic? Is it kernel code or a module? On Thursday 02 January 2003 1:42 pm, S P wrote: > Hi, > > I am trying to use semaphore for locking. Following is the piece of code I > am using : > > struct semaphore mr_sem; > > sema_init(&mr_sem, 1); /* usage count is 1 */ > > if (down_interruptible(&mr_sem)) > /* semaphore not acquired; received a signal ... */ > > /* critical region (semaphore acquired) ... */ > > up(&mr_sem); > > > > The compilation is done using gcc with options _D__KERNEL__. It compiles > properly, but the linking gives some errors regards to > __down_failed_interruptible and __up_wakeup. > > Do I need to specify some other options for the compilation. > > Thanks for the help. > > -SP > > > > --------------------------------- > Do you Yahoo!? > Yahoo! Mail Plus - Powerful. Affordable. Sign up now -- Tom Bradley Software Engineer Jaycor / Titan Systems -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
