On Tue, 4 Mar 2008, David Xu wrote:
Jeff Roberson wrote:
One question is how I can determine the size of cpuset the kernel is
using ?
I wrote it to tolerate user masks that were much larger than the kernel
mask. I set the default CPU_SETSIZE in userspace to 128 and in kernel it's
MAXCPU. So in practice an application shouldn't have to redefine
CPU_SETSIZE. If your set is too small the kernel will return ERANGE
however. Unfortunately, if your set is larger than the kernel's
CPU_MAXSIZE it'll also return ERANGE. Maybe I should use different errnos
for those cases.
From my point, userland has to write some urgly code to guess what
kernel code wants, it is rather frustrate.
You can use sysctl kern.smp.maxcpus to get the precise size.
_______________________________________________
[email protected] mailing list
http://lists.freebsd.org/mailman/listinfo/cvs-all
To unsubscribe, send any mail to "[EMAIL PROTECTED]"
