Merge branch 'next' into for-linus

1 files changed, 9 insertions, 5 deletions

diff --git a/kernel/hw_breakpoint.c b/kernel/hw_breakpoint.c
index 366eedf949c0..50dbd5999588 100644
--- a/kernel/hw_breakpoint.c
+++ b/kernel/hw_breakpoint.c
@@ -40,6 +40,7 @@
 #include <linux/percpu.h>
 #include <linux/sched.h>
 #include <linux/init.h>
+#include <linux/cpu.h>
 #include <linux/smp.h>
 
 #include <linux/hw_breakpoint.h>
@@ -96,7 +97,7 @@ static int task_bp_pinned(struct task_struct *tsk)
 
         list = &ctx->event_list;
 
-        spin_lock_irqsave(&ctx->lock, flags);
+        raw_spin_lock_irqsave(&ctx->lock, flags);
 
         /*
          * The current breakpoint counter is not included in the list
@@ -107,7 +108,7 @@ static int task_bp_pinned(struct task_struct *tsk)
                         count++;
         }
 
-        spin_unlock_irqrestore(&ctx->lock, flags);
+        raw_spin_unlock_irqrestore(&ctx->lock, flags);
 
         return count;
 }
@@ -388,7 +389,8 @@ register_wide_hw_breakpoint(struct perf_event_attr *attr,
         if (!cpu_events)
                 return ERR_PTR(-ENOMEM);
 
-        for_each_possible_cpu(cpu) {
+        get_online_cpus();
+        for_each_online_cpu(cpu) {
                 pevent = per_cpu_ptr(cpu_events, cpu);
                 bp = perf_event_create_kernel_counter(attr, cpu, -1, triggered);
 
@@ -399,18 +401,20 @@ register_wide_hw_breakpoint(struct perf_event_attr *attr,
                         goto fail;
                 }
         }
+        put_online_cpus();
 
         return cpu_events;
 
 fail:
-        for_each_possible_cpu(cpu) {
+        for_each_online_cpu(cpu) {
                 pevent = per_cpu_ptr(cpu_events, cpu);
                 if (IS_ERR(*pevent))
                         break;
                 unregister_hw_breakpoint(*pevent);
         }
+        put_online_cpus();
+
         free_percpu(cpu_events);
-        /* return the error if any */
         return ERR_PTR(err);
 }
 EXPORT_SYMBOL_GPL(register_wide_hw_breakpoint);