[for-next][PATCH 03/13] tracing: Replace __get_cpu_var uses with this_cpu_ptr

Steven Rostedt
2014-05-12T15:16:01Z

[-- Attachment #1: 0003-tracing-Replace-__get_cpu_var-uses-with-this_cpu_ptr.patch --]
[-- Type: text/plain, Size: 2079 bytes --]

From: Christoph Lameter <cl@linux.com>

Replace uses of &__get_cpu_var for address calculation with this_cpu_ptr.

Link: http://lkml.kernel.org/p/alpine.DEB.2.10.1404291415560.18364@gentwo.org

Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
include/linux/kprobes.h | 2 +-
kernel/trace/ftrace.c | 4 ++--
kernel/trace/trace.c | 2 +-
3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/include/linux/kprobes.h b/include/linux/kprobes.h
index 925eaf2..7bd2ad0 100644
--- a/include/linux/kprobes.h
+++ b/include/linux/kprobes.h
@@ -355,7 +355,7 @@ static inline void reset_current_kprobe(void)

static inline struct kprobe_ctlblk *get_kprobe_ctlblk(void)
{
- return (&__get_cpu_var(kprobe_ctlblk));
+ return this_cpu_ptr(&kprobe_ctlblk);
}

int register_kprobe(struct kprobe *p);
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 9eb1aa0..38e5cf7 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -822,7 +822,7 @@ function_profile_call(unsigned long ip, unsigned long parent_ip,

local_irq_save(flags);

- stat = &__get_cpu_var(ftrace_profile_stats);
+ stat = this_cpu_ptr(&ftrace_profile_stats);
if (!stat->hash || !ftrace_profile_enabled)
goto out;

@@ -853,7 +853,7 @@ static void profile_graph_return(struct ftrace_graph_ret *trace)
unsigned long flags;

local_irq_save(flags);
- stat = &__get_cpu_var(ftrace_profile_stats);
+ stat = this_cpu_ptr(&ftrace_profile_stats);
if (!stat->hash || !ftrace_profile_enabled)
goto out;

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 4c392c8..0543169 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -1726,7 +1726,7 @@ static void __ftrace_trace_stack(struct ring_buffer *buffer,
*/
barrier();
if (use_stack == 1) {
- trace.entries = &__get_cpu_var(ftrace_stack).calls[0];
+ trace.entries = this_cpu_ptr(ftrace_stack.calls);
trace.max_entries = FTRACE_STACK_MAX_ENTRIES;

if (regs)
--
1.8.5.3