Messages in this thread Patch in this message | | | Date | Mon, 13 Jun 2005 16:29:16 -0700 | From | Venkatesh Pallipadi <> | Subject | [PATCH] Handle CPU cores in CPU cache information |
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Handle the case of all the cores in a package sharing the cache, in cache_shared_cpu_map_setup().
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
diff -purN linux-2.6.12-rc4-mm2/arch/i386/kernel/cpu/intel_cacheinfo.c linux-2.6.12-rc4-mm2-cache/arch/i386/kernel/cpu/intel_cacheinfo.c --- linux-2.6.12-rc4-mm2/arch/i386/kernel/cpu/intel_cacheinfo.c 2005-05-17 05:50:03.000000000 -0700 +++ linux-2.6.12-rc4-mm2-cache/arch/i386/kernel/cpu/intel_cacheinfo.c 2005-06-11 04:53:59.749155936 -0700 @@ -305,6 +305,9 @@ static void __devinit cache_shared_cpu_m { struct _cpuid4_info *this_leaf; unsigned long num_threads_sharing; +#ifdef CONFIG_X86_HT + struct cpuinfo_x86 *c = cpu_data + cpu; +#endif this_leaf = CPUID4_INFO_IDX(cpu, index); num_threads_sharing = 1 + this_leaf->eax.split.num_threads_sharing; @@ -314,10 +317,12 @@ static void __devinit cache_shared_cpu_m #ifdef CONFIG_X86_HT else if (num_threads_sharing == smp_num_siblings) this_leaf->shared_cpu_map = cpu_sibling_map[cpu]; -#endif + else if (num_threads_sharing == (c->x86_num_cores * smp_num_siblings)) + this_leaf->shared_cpu_map = cpu_core_map[cpu]; else - printk(KERN_INFO "Number of CPUs sharing cache didn't match " + printk(KERN_DEBUG "Number of CPUs sharing cache didn't match " "any known set of CPUs\n"); +#endif } #else static void __init cache_shared_cpu_map_setup(unsigned int cpu, int index) {} - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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