kernel syncronization

You can use the macros DECLARE_MUTEX and DECLARE_MUTEX_LOCKED

to declare semaphores with initial values of 1 or 0. You can

then use the up and down functions on theese variables.



static DECLARE_MUTEX(mymutex);

void myfunc()

{

   down(mymutex);

   ...

   up(mymutex);

}