x86, vsmp: Remove is_vsmp_box() from apic_is_clustered_box()

[firefly-linux-kernel-4.4.55.git] / arch / x86 / kernel / apic / apic.c

diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index ca1bd75e3de2549691acd30c3e8d3f37c0fd264f..6b35d308688c82f888e367cddbdd94143f8b56d4 100644 (file)
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -2451,51 +2451,6 @@ static void apic_pm_activate(void) { }
 
 #ifdef CONFIG_X86_64
 
-static int apic_cluster_num(void)
-{
-       int i, clusters, zeros;
-       unsigned id;
-       u16 *bios_cpu_apicid;
-       DECLARE_BITMAP(clustermap, NUM_APIC_CLUSTERS);
-
-       bios_cpu_apicid = early_per_cpu_ptr(x86_bios_cpu_apicid);
-       bitmap_zero(clustermap, NUM_APIC_CLUSTERS);
-
-       for (i = 0; i < nr_cpu_ids; i++) {
-               /* are we being called early in kernel startup? */
-               if (bios_cpu_apicid) {
-                       id = bios_cpu_apicid[i];
-               } else if (i < nr_cpu_ids) {
-                       if (cpu_present(i))
-                               id = per_cpu(x86_bios_cpu_apicid, i);
-                       else
-                               continue;
-               } else
-                       break;
-
-               if (id != BAD_APICID)
-                       __set_bit(APIC_CLUSTERID(id), clustermap);
-       }
-
-       /* Problem:  Partially populated chassis may not have CPUs in some of
-        * the APIC clusters they have been allocated.  Only present CPUs have
-        * x86_bios_cpu_apicid entries, thus causing zeroes in the bitmap.
-        * Since clusters are allocated sequentially, count zeros only if
-        * they are bounded by ones.
-        */
-       clusters = 0;
-       zeros = 0;
-       for (i = 0; i < NUM_APIC_CLUSTERS; i++) {
-               if (test_bit(i, clustermap)) {
-                       clusters += 1 + zeros;
-                       zeros = 0;
-               } else
-                       ++zeros;
-       }
-
-       return clusters;
-}
-
 static int multi_checked;
 static int multi;
 
@@ -2540,20 +2495,7 @@ static void dmi_check_multi(void)
 int apic_is_clustered_box(void)
 {
        dmi_check_multi();
-       if (multi)
-               return 1;
-
-       if (!is_vsmp_box())
-               return 0;
-
-       /*
-        * ScaleMP vSMPowered boxes have one cluster per board and TSCs are
-        * not guaranteed to be synced between boards
-        */
-       if (apic_cluster_num() > 1)
-               return 1;
-
-       return 0;
+       return multi;
 }
 #endif