percpu: make percpu symbols in x86 unique

This patch updates percpu related symbols in x86 such that percpu
symbols are unique and don't clash with local symbols.  This serves
two purposes of decreasing the possibility of global percpu symbol
collision and allowing dropping per_cpu__ prefix from percpu symbols.

* arch/x86/kernel/cpu/common.c: rename local variable to avoid collision

* arch/x86/kvm/svm.c: s/svm_data/sd/ for local variables to avoid collision

* arch/x86/kernel/cpu/cpu_debug.c: s/cpu_arr/cpud_arr/
  				   s/priv_arr/cpud_priv_arr/
				   s/cpu_priv_count/cpud_priv_count/

* arch/x86/kernel/cpu/intel_cacheinfo.c: s/cpuid4_info/ici_cpuid4_info/
  					 s/cache_kobject/ici_cache_kobject/
					 s/index_kobject/ici_index_kobject/

* arch/x86/kernel/ds.c: s/cpu_context/cpu_ds_context/

Partly based on Rusty Russell's "alloc_percpu: rename percpu vars
which cause name clashes" patch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: (kvm) Avi Kivity <avi@redhat.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: x86@kernel.org

1 files changed, 4 insertions, 4 deletions

diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index cc25c2b4a567..3192f22f2fdd 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -1093,7 +1093,7 @@ static void clear_all_debug_regs(void)
 
 void __cpuinit cpu_init(void)
 {
-        struct orig_ist *orig_ist;
+        struct orig_ist *oist;
         struct task_struct *me;
         struct tss_struct *t;
         unsigned long v;
@@ -1102,7 +1102,7 @@ void __cpuinit cpu_init(void)
 
         cpu = stack_smp_processor_id();
         t = &per_cpu(init_tss, cpu);
-        orig_ist = &per_cpu(orig_ist, cpu);
+        oist = &per_cpu(orig_ist, cpu);
 
 #ifdef CONFIG_NUMA
         if (cpu != 0 && percpu_read(node_number) == 0 &&
@@ -1143,12 +1143,12 @@ void __cpuinit cpu_init(void)
         /*
          * set up and load the per-CPU TSS
          */
-        if (!orig_ist->ist[0]) {
+        if (!oist->ist[0]) {
                 char *estacks = per_cpu(exception_stacks, cpu);
 
                 for (v = 0; v < N_EXCEPTION_STACKS; v++) {
                         estacks += exception_stack_sizes[v];
-                        orig_ist->ist[v] = t->x86_tss.ist[v] =
+                        oist->ist[v] = t->x86_tss.ist[v] =
                                         (unsigned long)estacks;
                 }
         }