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authorAndi Kleen <ak@suse.de>2005-04-16 15:25:15 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:25:15 -0700
commit3dd9d514846cdca1dcef2e4fce666d85e199e844 (patch)
tree28e60a8b733db213e88b0aee8ef3861a93a6fa48 /include/asm-i386/processor.h
parentf2ea2750fbe56867bc8e0eb595115b14195a3e5e (diff)
[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/processor.h')
-rw-r--r--include/asm-i386/processor.h1
1 files changed, 1 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 *);