Messages in this thread Patch in this message | | | From | Tom Zanussi <> | Subject | [PATCH 1/2] tracing: Add __rcu to enter/exit_syscall_files | Date | Sun, 10 Nov 2013 23:03:45 -0600 |
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Add __rcu annotation to the contents of enter/exit_syscall_files to signify that they're protected by rcu and to silence the following sparse warnings when CONFIG_SPARSE_RCU_POINTER=y:
kernel/trace/trace_syscalls.c:320:23: error: incompatible types in comparison expression (different address spaces) kernel/trace/trace_syscalls.c:368:23: error: incompatible types in comparison expression (different address spaces)
Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com> Reported-by: Fengguang Wu <fengguang.wu@intel.com> --- kernel/trace/trace.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index 11a04d6..7ca1993 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -192,8 +192,8 @@ struct trace_array { #ifdef CONFIG_FTRACE_SYSCALLS int sys_refcount_enter; int sys_refcount_exit; - struct ftrace_event_file *enter_syscall_files[NR_syscalls]; - struct ftrace_event_file *exit_syscall_files[NR_syscalls]; + struct ftrace_event_file __rcu *enter_syscall_files[NR_syscalls]; + struct ftrace_event_file __rcu *exit_syscall_files[NR_syscalls]; #endif int stop_count; int clock_id; -- 1.8.3.1
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