Hi Maurizio, Yeah, I would suppose you can use either kernel_sysctl() or kernel_sysctlbyname() to get it.
An example of kernel_sysctl(), which is used in more places than kernel_sysctlbyname() AFAICS: http://pkgbox64.dragonflybsd.org/xref/DragonFly-master/sys/vfs/nwfs/nwfs_vfsops.c#360 Cheers, Antonio Huete 2011/10/24 Maurizio Lombardi <[email protected]> > Hi all, > > I've a little question: > In platform/pc32/i386/identcpu.c there is the following variable defined: > > ------------------ > static int hw_clockrate; > SYSCTL_INT(_hw, OID_AUTO, clockrate, CTLFLAG_RD, > &hw_clockrate, 0, "CPU instruction clock rate"); > ------------------ > > I suppose it contains the current cpu speed in Mhz. > How can I properly read it's content from a kernel module? > Is it correct to do that? > > -------------- > const size_t var_size = sizeof(int); > int cpu_mhz; > > kernel_sysctlbyname("hw.clockrate", &cpu_mhz, &var_size, NULL, 0, NULL); > -------------- > > Thanks for the help, > > -- > -------------------- > Maurizio Lombardi >
