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.
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