On Thu, 22 Sep 2005 10:48:24 -0300 sauro <sauro@xxxxxxxxxxx> wrote: > I would like to get, from userland, the results of a function that is > only avaiable from kernel space. (get_cycles, to be exact) > What is the easiest way to do it? Maybe an ioctl? Why would you want to use the kernel get_cycles()? It's trivial to define your own function/macro based on rdtsc: http://lxr.linux.no/source/include/asm-i386/msr.h#L41 #define rdtscll(val) \ __asm__ __volatile__ ("rdtsc" : "=A" (val)) -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
