linux-kernel - [PATCH 4.13 074/109] ftrace: Fix debug preempt config name in stack_tracer

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Date:   Sun, 24 Sep 2017 22:33:35 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Zev Weiss <zev@...ilderbeest.net>,
        "Steven Rostedt (VMware)" <rostedt@...dmis.org>
Subject: [PATCH 4.13 074/109] ftrace: Fix debug preempt config name in stack_tracer_{en,dis}able

4.13-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Zev Weiss <zev@...ilderbeest.net>

commit 60361e12d01676e23a8de89a5ef4a349ae97f616 upstream.

stack_tracer_disable()/stack_tracer_enable() had been using the wrong
name for the config symbol to enable their preempt-debugging checks --
fix with a word swap.

Link: http://lkml.kernel.org/r/20170831154036.4xldyakmmhuts5x7@hatter.bewilderbeest.net

Fixes: 8aaf1ee70e ("tracing: Rename trace_active to disable_stack_tracer and inline its modification")
Signed-off-by: Zev Weiss <zev@...ilderbeest.net>
Signed-off-by: Steven Rostedt (VMware) <rostedt@...dmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index 6383115e9d2c..2e028854bac7 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -307,7 +307,7 @@ DECLARE_PER_CPU(int, disable_stack_tracer);
 static inline void stack_tracer_disable(void)
 {
 	/* Preemption or interupts must be disabled */
-	if (IS_ENABLED(CONFIG_PREEMPT_DEBUG))
+	if (IS_ENABLED(CONFIG_DEBUG_PREEMPT))
 		WARN_ON_ONCE(!preempt_count() || !irqs_disabled());
 	this_cpu_inc(disable_stack_tracer);
 }
@@ -320,7 +320,7 @@ static inline void stack_tracer_disable(void)
  */
 static inline void stack_tracer_enable(void)
 {
-	if (IS_ENABLED(CONFIG_PREEMPT_DEBUG))
+	if (IS_ENABLED(CONFIG_DEBUG_PREEMPT))
 		WARN_ON_ONCE(!preempt_count() || !irqs_disabled());
 	this_cpu_dec(disable_stack_tracer);
 }