Date: Wed, 27 Oct 2010 16:33:07 +0300 From: Kostik Belousov <kostikbel@gmail.com> To: David Xu <davidxu@freebsd.org> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org, Pawel Jakub Dawidek <pjd@freebsd.org>, Garrett Cooper <gcooper@freebsd.org> Subject: Re: svn commit: r214409 - head/sys/kern Message-ID: <20101027133307.GQ2392@deviant.kiev.zoral.com.ua> In-Reply-To: <4CC85552.2020100@freebsd.org> References: <201010270232.o9R2Wsu3084553@svn.freebsd.org> <AANLkTi=2dTVmB8Goj%2BNXq4F6SmZBNS3bxn8gLjmQ%2BdfV@mail.gmail.com> <4CC803A8.3040602@freebsd.org> <20101027082122.GD1848@garage.freebsd.pl> <4CC85552.2020100@freebsd.org>
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--qShzMMhzd2CdnVN0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Oct 27, 2010 at 04:37:38PM +0000, David Xu wrote: > Pawel Jakub Dawidek wrote: > >On Wed, Oct 27, 2010 at 10:49:12AM +0000, David Xu wrote: > >>I really hate to see such a problem that userland can not figure out > >>what kernel is using, I try hardly to guess, but still can not find > >>what it is using. yes, I think the doc may need to be fixed or > >>another syscall is needed. > > > >Maybe you could just add sysctl and eventually put it into sysconf(3)? > > >=20 > I just found a dirty method, use sizeof(long) and kern.smp.maxcpus > 32 to figure out the size the kernel is using, because it is how > cpuset_t is constructed, wish it will never be changed. ;-) >=20 I think that sysctl is the way forward, but you may add non-portable FreeBSD function to get the value, and use an ELF aux vector interface to avoid sysctl most of the time. --qShzMMhzd2CdnVN0 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (FreeBSD) iEYEARECAAYFAkzIKhIACgkQC3+MBN1Mb4g0RACg4rYLGVbX4vXDx5/wOjp30mGc P48AniTB28JicB/3vkEGN6J0nR86AEJn =Wl2c -----END PGP SIGNATURE----- --qShzMMhzd2CdnVN0--
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