Messages in this thread Patch in this message | | | Date | Mon, 11 Nov 2013 17:15:46 -0500 | From | Steven Rostedt <> | Subject | [for-next][PATCH] tracing: Add rcu annotation for syscall trace descriptors |
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git for-next
Head SHA1: 3a81a5210b7d33bb6d836b4c4952a54166a336f3
Steven Rostedt (Red Hat) (1): tracing: Add rcu annotation for syscall trace descriptors
---- kernel/trace/trace.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --------------------------- commit 3a81a5210b7d33bb6d836b4c4952a54166a336f3 Author: Steven Rostedt (Red Hat) <rostedt@goodmis.org> Date: Mon Nov 11 11:47:06 2013 -0500
tracing: Add rcu annotation for syscall trace descriptors sparse complains about the enter/exit_sysycall_files[] variables being dereferenced with rcu_dereference_sched(). The fields need to be annotated with __rcu. Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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;
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