[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

volatile or not volatile

Hi,
Lock mechanisms serialize the exec of a critical section which operates on 
shared data, normally.
Do these mechanisms (spinlocks, semaphores, atomic_t) make sure
that they always operate on the most actual versions of the shared data?
Have I to do some *special action* to ensure this, like qualifying the shared 
data volatile?
What mechanism exists to enforce *memory sync* anyway?

/FAU
--
Kernelnewbies: Help each other learn about the Linux kernel.
Archive:       http://mail.nl.linux.org/kernelnewbies/
FAQ:           http://kernelnewbies.org/faq/