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, 15 insertions, 15 deletions

diff --git a/arch/x86/kernel/cpu/cpu_debug.c b/arch/x86/kernel/cpu/cpu_debug.c
index dca325c03999..b368cd862997 100644
--- a/arch/x86/kernel/cpu/cpu_debug.c
+++ b/arch/x86/kernel/cpu/cpu_debug.c
@@ -30,9 +30,9 @@
 #include <asm/apic.h>
 #include <asm/desc.h>
 
-static DEFINE_PER_CPU(struct cpu_cpuX_base [CPU_REG_ALL_BIT], cpu_arr);
-static DEFINE_PER_CPU(struct cpu_private * [MAX_CPU_FILES], priv_arr);
-static DEFINE_PER_CPU(int, cpu_priv_count);
+static DEFINE_PER_CPU(struct cpu_cpuX_base [CPU_REG_ALL_BIT], cpud_arr);
+static DEFINE_PER_CPU(struct cpu_private * [MAX_CPU_FILES], cpud_priv_arr);
+static DEFINE_PER_CPU(int, cpud_priv_count);
 
 static DEFINE_MUTEX(cpu_debug_lock);
 
@@ -531,7 +531,7 @@ static int cpu_create_file(unsigned cpu, unsigned type, unsigned reg,
 
 	/* Already intialized */
 	if (file == CPU_INDEX_BIT)
-		if (per_cpu(cpu_arr[type].init, cpu))
+		if (per_cpu(cpud_arr[type].init, cpu))
 			return 0;
 
 	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
@@ -543,8 +543,8 @@ static int cpu_create_file(unsigned cpu, unsigned type, unsigned reg,
 	priv->reg = reg;
 	priv->file = file;
 	mutex_lock(&cpu_debug_lock);
-	per_cpu(priv_arr[type], cpu) = priv;
-	per_cpu(cpu_priv_count, cpu)++;
+	per_cpu(cpud_priv_arr[type], cpu) = priv;
+	per_cpu(cpud_priv_count, cpu)++;
 	mutex_unlock(&cpu_debug_lock);
 
 	if (file)
@@ -552,10 +552,10 @@ static int cpu_create_file(unsigned cpu, unsigned type, unsigned reg,
 				    dentry, (void *)priv, &cpu_fops);
 	else {
 		debugfs_create_file(cpu_base[type].name, S_IRUGO,
-				    per_cpu(cpu_arr[type].dentry, cpu),
+				    per_cpu(cpud_arr[type].dentry, cpu),
 				    (void *)priv, &cpu_fops);
 		mutex_lock(&cpu_debug_lock);
-		per_cpu(cpu_arr[type].init, cpu) = 1;
+		per_cpu(cpud_arr[type].init, cpu) = 1;
 		mutex_unlock(&cpu_debug_lock);
 	}
 
@@ -615,7 +615,7 @@ static int cpu_init_allreg(unsigned cpu, struct dentry *dentry)
 		if (!is_typeflag_valid(cpu, cpu_base[type].flag))
 			continue;
 		cpu_dentry = debugfs_create_dir(cpu_base[type].name, dentry);
-		per_cpu(cpu_arr[type].dentry, cpu) = cpu_dentry;
+		per_cpu(cpud_arr[type].dentry, cpu) = cpu_dentry;
 
 		if (type < CPU_TSS_BIT)
 			err = cpu_init_msr(cpu, type, cpu_dentry);
@@ -647,11 +647,11 @@ static int cpu_init_cpu(void)
 		err = cpu_init_allreg(cpu, cpu_dentry);
 
 		pr_info("cpu%d(%d) debug files %d\n",
-			cpu, nr_cpu_ids, per_cpu(cpu_priv_count, cpu));
-		if (per_cpu(cpu_priv_count, cpu) > MAX_CPU_FILES) {
+			cpu, nr_cpu_ids, per_cpu(cpud_priv_count, cpu));
+		if (per_cpu(cpud_priv_count, cpu) > MAX_CPU_FILES) {
 			pr_err("Register files count %d exceeds limit %d\n",
-				per_cpu(cpu_priv_count, cpu), MAX_CPU_FILES);
-			per_cpu(cpu_priv_count, cpu) = MAX_CPU_FILES;
+				per_cpu(cpud_priv_count, cpu), MAX_CPU_FILES);
+			per_cpu(cpud_priv_count, cpu) = MAX_CPU_FILES;
 			err = -ENFILE;
 		}
 		if (err)
@@ -676,8 +676,8 @@ static void __exit cpu_debug_exit(void)
 		debugfs_remove_recursive(cpu_debugfs_dir);
 
 	for (cpu = 0; cpu <  nr_cpu_ids; cpu++)
-		for (i = 0; i < per_cpu(cpu_priv_count, cpu); i++)
-			kfree(per_cpu(priv_arr[i], cpu));
+		for (i = 0; i < per_cpu(cpud_priv_count, cpu); i++)
+			kfree(per_cpu(cpud_priv_arr[i], cpu));
 }
 
 module_init(cpu_debug_init);