[PATCH] i386: Count both multi cores and SMP siblings in /proc/cpuinfo siblings.

Count both multi cores and SMP siblings in /proc/cpuinfo siblings.

This avoids breaking user space licensing managers who license by CPU on dual
core systems.

Port of the equivalent code on x86-64.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/i386/kernel/cpu/common.c

@@ -437,6 +437,7 @@ void __init dodgy_tsc(void)
 		cpu_devs[X86_VENDOR_CYRIX]->c_init(&boot_cpu_data);
 }
 
+#ifdef CONFIG_X86_HT
 void __init detect_ht(struct cpuinfo_x86 *c)
 {
 	u32 	eax, ebx, ecx, edx;
@@ -478,6 +479,7 @@ void __init detect_ht(struct cpuinfo_x86 *c)
 		       phys_proc_id[cpu]);
 	}
 }
+#endif
 
 void __init print_cpu_info(struct cpuinfo_x86 *c)
 {

arch/i386/kernel/cpu/intel.c

@@ -139,9 +139,7 @@ static void __init init_intel(struct cpuinfo_x86 *c)
 	if ( p )
 		strcpy(c->x86_model_id, p);
 	
-#ifdef CONFIG_X86_HT
 	detect_ht(c);
-#endif
 
 	/* Work around errata */
 	Intel_errata_workarounds(c);

arch/i386/kernel/cpu/proc.c

@@ -94,11 +94,8 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 	if (c->x86_cache_size >= 0)
 		seq_printf(m, "cache size\t: %d KB\n", c->x86_cache_size);
 #ifdef CONFIG_X86_HT
-	if (smp_num_siblings > 1) {
-		extern int phys_proc_id[NR_CPUS];
 	seq_printf(m, "physical id\t: %d\n", phys_proc_id[n]);
-		seq_printf(m, "siblings\t: %d\n", smp_num_siblings);
-	}
+	seq_printf(m, "siblings\t: %d\n", c->x86_num_cores * smp_num_siblings);
 #endif
 	
 	/* We use exception 16 if we have hardware math and we've either seen it or the CPU claims it is internal */

include/asm-i386/processor.h

@@ -104,7 +104,12 @@ extern void identify_cpu(struct cpuinfo_x86 *);
 extern void print_cpu_info(struct cpuinfo_x86 *);
 extern unsigned int init_intel_cacheinfo(struct cpuinfo_x86 *c);
 extern void dodgy_tsc(void);
+
+#ifdef CONFIG_X86_HT
 extern void detect_ht(struct cpuinfo_x86 *c);
+#else
+static inline void detect_ht(struct cpuinfo_x86 *c) {}
+#endif
 
 /*
  * EFLAGS bits