cvs commit: src/sys/kern init_sysent.c syscalls.c
systrace_args.c src/sys/sys syscall.h syscall.mk sysproto.h
davidxu at FreeBSD.org
Tue Mar 4 02:07:59 UTC 2008
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.
More information about the cvs-src