[PATCH] x86: when L3 is present show its size in /proc/cpuinfo
The code that prints the cache size assumes that L3 always lives in chipset
and is shared across CPUs. Which is not really true.
I think all the cachesizes reported by cpuid are in the processor itself.
The attached patch changes the code to reflect that.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/i386/kernel/cpu/intel_cacheinfo.c b/arch/i386/kernel/cpu/intel_cacheinfo.c
index c802206..7cc84a4 100644
--- a/arch/i386/kernel/cpu/intel_cacheinfo.c
+++ b/arch/i386/kernel/cpu/intel_cacheinfo.c
@@ -278,13 +278,7 @@
if ( l3 )
printk(KERN_INFO "CPU: L3 cache: %dK\n", l3);
- /*
- * This assumes the L3 cache is shared; it typically lives in
- * the northbridge. The L1 caches are included by the L2
- * cache, and so should not be included for the purpose of
- * SMP switching weights.
- */
- c->x86_cache_size = l2 ? l2 : (l1i+l1d);
+ c->x86_cache_size = l3 ? l3 : (l2 ? l2 : (l1i+l1d));
}
return l2;
