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Date: Tue, 2 Feb 2010 13:35:11 +1300 From: zhiyi <zhuang@...otago.ac.nz> To: Borislav Petkov <petkovbb@...glemail.com> Cc: linux-kernel@...r.kernel.org, jkmair@...otago.ac.nz Subject: Re: nr_cpu_ids incorrect on AMD Quad-Core Opteron 8380 On 2/02/2010, at 2:57 AM, Borislav Petkov wrote: > On Sun, Jan 31, 2010 at 11:59 PM, zhiyi <zhuang@...otago.ac.nz> wrote: >> My module worked for a kernel 2.6.29 with CONFIG_NR_CPUS=64 on my >> dual >> quad-core AMD Opteron. The value of nr_cpu_ids I got from the same >> module >> was correct (8). > > This could mean that your include/generated/autoconf.h, which is > used by > external modules, is not updated and contains CONFIG_NR_CPUS=8. I have checked include/linux/autoconf.h in my linux src and found #define CONFIG_NR_CPUS 64 but I don't see any dir like "generated" under include/ By the way, I compiled my module independent of the compilation of Linux tree, i.e. after the kernel is compiled and booted. Cheers, Zhiyi > Do > > make mrproper > > in your kernel directory by moving your .config out of the way first > and > then rebuild your kernel and external module(s). nr_cpu_ids should > pick > up the updated CONFIG_NR_CPUS value from your .config. > > -- > Regards/Gruss, > Boris > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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