perf_events, trace: Fix probe unregister race

[firefly-linux-kernel-4.4.55.git] / kernel / trace / trace_syscalls.c

diff --git a/kernel/trace/trace_syscalls.c b/kernel/trace/trace_syscalls.c
index d2c859cec9ea85b6f2e32c4c016937bee450aacb..34e35804304b03a7549b2f3a00064e8ec4675d7f 100644 (file)
--- a/kernel/trace/trace_syscalls.c
+++ b/kernel/trace/trace_syscalls.c
@@ -519,7 +519,7 @@ static void perf_syscall_enter(void *ignore, struct pt_regs *regs, long id)
        syscall_get_arguments(current, regs, 0, sys_data->nb_args,
                               (unsigned long *)&rec->args);
 
-       head = per_cpu_ptr(sys_data->enter_event->perf_events, smp_processor_id());
+       head = this_cpu_ptr(sys_data->enter_event->perf_events);
        perf_trace_buf_submit(rec, size, rctx, 0, 1, regs, head);
 }
 
@@ -595,7 +595,7 @@ static void perf_syscall_exit(void *ignore, struct pt_regs *regs, long ret)
        rec->nr = syscall_nr;
        rec->ret = syscall_get_return_value(current, regs);
 
-       head = per_cpu_ptr(sys_data->exit_event->perf_events, smp_processor_id());
+       head = this_cpu_ptr(sys_data->exit_event->perf_events);
        perf_trace_buf_submit(rec, size, rctx, 0, 1, regs, head);
 }