1 files changed, 13 insertions, 10 deletions

diff --git a/arch/sparc/kernel/perf_event.c b/arch/sparc/kernel/perf_event.c
index b5c38faa4ead..8efd33753ad3 100644
--- a/arch/sparc/kernel/perf_event.c
+++ b/arch/sparc/kernel/perf_event.c
@@ -110,7 +110,7 @@ struct cpu_hw_events {
 
         unsigned int            group_flag;
 };
-DEFINE_PER_CPU(struct cpu_hw_events, cpu_hw_events) = { .enabled = 1, };
+static DEFINE_PER_CPU(struct cpu_hw_events, cpu_hw_events) = { .enabled = 1, };
 
 /* An event map describes the characteristics of a performance
  * counter event.  In particular it gives the encoding as well as
@@ -1153,7 +1153,7 @@ static void perf_stop_nmi_watchdog(void *unused)
                 cpuc->pcr[i] = pcr_ops->read_pcr(i);
 }
 
-void perf_event_grab_pmc(void)
+static void perf_event_grab_pmc(void)
 {
         if (atomic_inc_not_zero(&active_events))
                 return;
@@ -1169,7 +1169,7 @@ void perf_event_grab_pmc(void)
         mutex_unlock(&pmc_grab_mutex);
 }
 
-void perf_event_release_pmc(void)
+static void perf_event_release_pmc(void)
 {
         if (atomic_dec_and_mutex_lock(&active_events, &pmc_grab_mutex)) {
                 if (atomic_read(&nmi_active) == 0)
@@ -1669,7 +1669,7 @@ static bool __init supported_pmu(void)
         return false;
 }
 
-int __init init_hw_perf_events(void)
+static int __init init_hw_perf_events(void)
 {
         pr_info("Performance events: ");
 
@@ -1742,10 +1742,11 @@ static void perf_callchain_user_64(struct perf_callchain_entry *entry,
 
         ufp = regs->u_regs[UREG_I6] + STACK_BIAS;
         do {
-                struct sparc_stackf *usf, sf;
+                struct sparc_stackf __user *usf;
+                struct sparc_stackf sf;
                 unsigned long pc;
 
-                usf = (struct sparc_stackf *) ufp;
+                usf = (struct sparc_stackf __user *)ufp;
                 if (__copy_from_user_inatomic(&sf, usf, sizeof(sf)))
                         break;
 
@@ -1765,17 +1766,19 @@ static void perf_callchain_user_32(struct perf_callchain_entry *entry,
                 unsigned long pc;
 
                 if (thread32_stack_is_64bit(ufp)) {
-                        struct sparc_stackf *usf, sf;
+                        struct sparc_stackf __user *usf;
+                        struct sparc_stackf sf;
 
                         ufp += STACK_BIAS;
-                        usf = (struct sparc_stackf *) ufp;
+                        usf = (struct sparc_stackf __user *)ufp;
                         if (__copy_from_user_inatomic(&sf, usf, sizeof(sf)))
                                 break;
                         pc = sf.callers_pc & 0xffffffff;
                         ufp = ((unsigned long) sf.fp) & 0xffffffff;
                 } else {
-                        struct sparc_stackf32 *usf, sf;
-                        usf = (struct sparc_stackf32 *) ufp;
+                        struct sparc_stackf32 __user *usf;
+                        struct sparc_stackf32 sf;
+                        usf = (struct sparc_stackf32 __user *)ufp;
                         if (__copy_from_user_inatomic(&sf, usf, sizeof(sf)))
                                 break;
                         pc = sf.callers_pc;