vpmu intel: Better names and replacing numerals with defines

This patch renames core2_counters to core2_fix_counters for better
understanding the code and subtitutes 2 numerals with defines in fixed counter
handling.

Signed-off-by: Dietmar Hahn <dietmar.hahn@ts.fujitsu.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: Jun Nakajima <jun.nakajima@intel.com>

1 files changed, 8 insertions, 3 deletions

diff --git a/xen/include/asm-x86/hvm/vmx/vpmu_core2.h b/xen/include/asm-x86/hvm/vmx/vpmu_core2.h
index 2a9f346a15..4128f2ac24 100644
--- a/xen/include/asm-x86/hvm/vmx/vpmu_core2.h
+++ b/xen/include/asm-x86/hvm/vmx/vpmu_core2.h
@@ -23,6 +23,11 @@
 #ifndef __ASM_X86_HVM_VPMU_CORE_H_
 #define __ASM_X86_HVM_VPMU_CORE_H_
 
+/* Currently only 3 fixed counters are supported. */
+#define VPMU_CORE2_NUM_FIXED 3
+/* Currently only 3 Non-architectual Performance Control MSRs */
+#define VPMU_CORE2_NUM_CTRLS 3
+
 struct arch_msr_pair {
     u64 counter;
     u64 control;
@@ -30,14 +35,14 @@ struct arch_msr_pair {
 
 struct core2_pmu_enable {
     char ds_area_enable;
-    char fixed_ctr_enable[3];
+    char fixed_ctr_enable[VPMU_CORE2_NUM_FIXED];
     char arch_pmc_enable[1];
 };
 
 struct core2_vpmu_context {
     struct core2_pmu_enable *pmu_enable;
-    u64 counters[3];
-    u64 ctrls[3];
+    u64 fix_counters[VPMU_CORE2_NUM_FIXED];
+    u64 ctrls[VPMU_CORE2_NUM_CTRLS];
     u64 global_ovf_status;
     u32 hw_lapic_lvtpc;
     struct arch_msr_pair arch_msr_pair[1];