[Xen-devel] [PATCH 4/4] drop __get_cpu_var() and __get_cpu_ptr()

["Jan Beulich" <JBeulich@xxxxxxxx>]

this_cpu{,_ptr}() are shorter, and have previously been marked as
preferred in Xen anyway.

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

--- a/xen/common/rcupdate.c
+++ b/xen/common/rcupdate.c
@@ -225,7 +225,7 @@ void call_rcu(struct rcu_head *head,
     head->func = func;
     head->next = NULL;
     local_irq_save(flags);
-    rdp = &__get_cpu_var(rcu_data);
+    rdp = &this_cpu(rcu_data);
     *rdp->nxttail = head;
     rdp->nxttail = &head->next;
     if (unlikely(++rdp->qlen > qhimark)) {
@@ -409,7 +409,7 @@ static void __rcu_process_callbacks(stru
 
 static void rcu_process_callbacks(void)
 {
-    __rcu_process_callbacks(&rcu_ctrlblk, &__get_cpu_var(rcu_data));
+    __rcu_process_callbacks(&rcu_ctrlblk, &this_cpu(rcu_data));
 }
 
 static int __rcu_pending(struct rcu_ctrlblk *rcp, struct rcu_data *rdp)
--- a/xen/include/asm-arm/percpu.h
+++ b/xen/include/asm-arm/percpu.h
@@ -17,12 +17,12 @@ void percpu_init_areas(void);
 
 #define per_cpu(var, cpu)  \
     (*RELOC_HIDE(&per_cpu__##var, __per_cpu_offset[cpu]))
-#define __get_cpu_var(var) \
+#define this_cpu(var) \
     (*RELOC_HIDE(&per_cpu__##var, READ_SYSREG(TPIDR_EL2)))
 
 #define per_cpu_ptr(var, cpu)  \
     (*RELOC_HIDE(var, __per_cpu_offset[cpu]))
-#define __get_cpu_ptr(var) \
+#define this_cpu_ptr(var) \
     (*RELOC_HIDE(var, READ_SYSREG(TPIDR_EL2)))
 
 #define DECLARE_PER_CPU(type, name) extern __typeof__(type) per_cpu__##name
--- a/xen/include/asm-x86/percpu.h
+++ b/xen/include/asm-x86/percpu.h
@@ -15,12 +15,12 @@ void percpu_init_areas(void);
 /* var is in discarded region: offset to particular copy we want */
 #define per_cpu(var, cpu)  \
     (*RELOC_HIDE(&per_cpu__##var, __per_cpu_offset[cpu]))
-#define __get_cpu_var(var) \
+#define this_cpu(var) \
     (*RELOC_HIDE(&per_cpu__##var, get_cpu_info()->per_cpu_offset))
 
 #define DECLARE_PER_CPU(type, name) extern __typeof__(type) per_cpu__##name
 
-#define __get_cpu_ptr(var) \
+#define this_cpu_ptr(var) \
     (*RELOC_HIDE(var, get_cpu_info()->per_cpu_offset))
 
 #define per_cpu_ptr(var, cpu)  \
--- a/xen/include/xen/percpu.h
+++ b/xen/include/xen/percpu.h
@@ -13,11 +13,6 @@
 #define DEFINE_PER_CPU_READ_MOSTLY(type, name) \
        __DEFINE_PER_CPU(type, _##name, .read_mostly)
 
-/* Preferred on Xen. Also see arch-defined per_cpu(). */
-#define this_cpu(var)    __get_cpu_var(var)
-
-#define this_cpu_ptr(ptr)    __get_cpu_ptr(ptr)
-
 #define get_per_cpu_var(var)  (per_cpu__##var)
 
 /* Linux compatibility. */
--- a/xen/xsm/flask/avc.c
+++ b/xen/xsm/flask/avc.c
@@ -57,9 +57,9 @@ const struct selinux_class_perm selinux_
 #define AVC_CACHE_RECLAIM        16
 
 #ifdef CONFIG_XSM_FLASK_AVC_STATS
-#define avc_cache_stats_incr(field)                 \
-do {                                \
-    __get_cpu_var(avc_cache_stats).field++;        \
+#define avc_cache_stats_incr(field)    \
+do {                                   \
+    this_cpu(avc_cache_stats).field++; \
 } while (0)
 #else
 #define avc_cache_stats_incr(field)    do {} while (0)





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