From: Steven Rostedt (Red Hat) <srostedt@redhat.com>
Date: Sat, 2 Mar 2013 21:49:10 +0000 (-0500)
Subject: tracing: Add __per_cpu annotation to trace array percpu data pointer
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=34ef61b1fa6172e994e441f1f0241dc53a75bd5f;p=linux-beck.git

tracing: Add __per_cpu annotation to trace array percpu data pointer

With the conversion of the data array to per cpu, sparse now complains
about the use of per_cpu_ptr() on the variable. But The variable is
allocated with alloc_percpu() and is fine to use. But since the structure
that contains the data variable does not annotate it as such, sparse
gives out a lot of false warnings.

Reported-by: Fengguang Wu <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 e420f2a230de..6728a249e817 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -198,7 +198,7 @@ struct trace_array {
 	struct list_head	systems;
 	struct list_head	events;
 	struct task_struct	*waiter;
-	struct trace_array_cpu	*data;
+	struct trace_array_cpu __percpu	*data;
 };
 
 enum {