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| author | Andi Kleen <ak@suse.de> | 2005-04-16 15:25:15 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:25:15 -0700 |
| commit | 3dd9d514846cdca1dcef2e4fce666d85e199e844 (patch) | |
| tree | 28e60a8b733db213e88b0aee8ef3861a93a6fa48 /include/asm-i386 | |
| parent | f2ea2750fbe56867bc8e0eb595115b14195a3e5e (diff) | |
| download | linux-stable-3dd9d514846cdca1dcef2e4fce666d85e199e844.tar.gz linux-stable-3dd9d514846cdca1dcef2e4fce666d85e199e844.tar.bz2 linux-stable-3dd9d514846cdca1dcef2e4fce666d85e199e844.zip | |
[PATCH] x86_64: add support for Intel dual-core detection and displaying
Appended patch adds the support for Intel dual-core detection and displaying
the core related information in /proc/cpuinfo.
It adds two new fields "core id" and "cpu cores" to x86 /proc/cpuinfo and the
"core id" field for x86_64("cpu cores" field is already present in x86_64).
Number of processor cores in a die is detected using cpuid(4) and this is
documented in IA-32 Intel Architecture Software Developer's Manual (vol 2a)
(http://developer.intel.com/design/pentium4/manuals/index_new.htm#sdm_vol2a)
This patch also adds cpu_core_map similar to cpu_sibling_map.
Slightly hacked by AK.
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-i386')
| -rw-r--r-- | include/asm-i386/processor.h | 1 | ||||
| -rw-r--r-- | include/asm-i386/smp.h | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/include/asm-i386/processor.h b/include/asm-i386/processor.h index 7149784ed40b..359bb0151742 100644 --- a/include/asm-i386/processor.h +++ b/include/asm-i386/processor.h @@ -98,6 +98,7 @@ extern struct cpuinfo_x86 cpu_data[]; #endif extern int phys_proc_id[NR_CPUS]; +extern int cpu_core_id[NR_CPUS]; extern char ignore_fpu_irq; extern void identify_cpu(struct cpuinfo_x86 *); diff --git a/include/asm-i386/smp.h b/include/asm-i386/smp.h index dd1491225d51..e03a206dfa36 100644 --- a/include/asm-i386/smp.h +++ b/include/asm-i386/smp.h @@ -35,6 +35,7 @@ extern void smp_alloc_memory(void); extern int pic_mode; extern int smp_num_siblings; extern cpumask_t cpu_sibling_map[]; +extern cpumask_t cpu_core_map[]; extern void smp_flush_tlb(void); extern void smp_message_irq(int cpl, void *dev_id, struct pt_regs *regs); |