X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;ds=sidebyside;f=arch%2Fi386%2Fkernel%2Fcpu%2Fintel.c;h=121aa2176e694a34f1fd06f23e1d903230b2207a;hb=f7f1b0f1e2fbadeab12d24236000e778aa9b1ead;hp=b8d847b850dc66c2b62ea5a37dbc6f2efa1c6a6d;hpb=e3f6fb6212a7102bdb56ba38fa1e98fe72950475;p=linux-2.6.git

diff --git a/arch/i386/kernel/cpu/intel.c b/arch/i386/kernel/cpu/intel.c
index b8d847b85..121aa2176 100644
--- a/arch/i386/kernel/cpu/intel.c
+++ b/arch/i386/kernel/cpu/intel.c
@@ -77,6 +77,27 @@ static void __init Intel_errata_workarounds(struct cpuinfo_x86 *c)
 }
 
 
+/*
+ * find out the number of processor cores on the die
+ */
+static int __init num_cpu_cores(struct cpuinfo_x86 *c)
+{
+	unsigned int eax;
+
+	if (c->cpuid_level < 4)
+		return 1;
+
+	__asm__("cpuid"
+		: "=a" (eax)
+		: "0" (4), "c" (0)
+		: "bx", "dx");
+
+	if (eax & 0x1f)
+		return ((eax >> 26) + 1);
+	else
+		return 1;
+}
+
 static void __init init_intel(struct cpuinfo_x86 *c)
 {
 	unsigned int l2 = 0;
@@ -139,6 +160,8 @@ static void __init init_intel(struct cpuinfo_x86 *c)
 	if ( p )
 		strcpy(c->x86_model_id, p);
 	
+	c->x86_num_cores = num_cpu_cores(c);
+
 	detect_ht(c);
 
 	/* Work around errata */