linux-kernel - [RT PATCH] Changed boot warning to look for CONFIG_FUNCTION && !CONFIG_DYNAMIC

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Message-ID: <20090812102843.1e0c6d73@torg>
Date:	Wed, 12 Aug 2009 10:28:43 -0500
From:	Clark Williams <williams@...hat.com>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	RT <linux-rt-users@...r.kernel.org>,
	John Kacur <jkacur@...hat.com>,
	Steven Rostedt <srostedt@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: [RT PATCH] Changed boot warning to look for CONFIG_FUNCTION &&
 !CONFIG_DYNAMIC_FTRACE

Thomas,

After a conversation with Steven, I changed the boot warning for
configs that may hurt performance to look for CONFIG_FUNCTION
&& !CONFIG_DYNAMIC_FTRACE, rather than just CONFIG_FTRACE.

Signed-off-by: Clark Williams <williams@...hat.com>
---
 init/main.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/init/main.c b/init/main.c
index a04e102..9a0d510 100644
--- a/init/main.c
+++ b/init/main.c
@@ -935,7 +935,7 @@ static int __init kernel_init(void * unused)
 	WARN_ON(irqs_disabled());
 #endif
 
-#define DEBUG_COUNT (defined(CONFIG_DEBUG_RT_MUTEXES) + defined(CONFIG_IRQSOFF_TRACER) + defined(CONFIG_PREEMPT_TRACER) + defined(CONFIG_STACK_TRACER) + defined(CONFIG_WAKEUP_LATENCY_HIST) + defined(CONFIG_DEBUG_SLAB) + defined(CONFIG_DEBUG_PAGEALLOC) + defined(CONFIG_LOCKDEP) + (defined(CONFIG_FTRACE) - defined(CONFIG_FTRACE_MCOUNT_RECORD)))
+#define DEBUG_COUNT (defined(CONFIG_DEBUG_RT_MUTEXES) + defined(CONFIG_IRQSOFF_TRACER) + defined(CONFIG_PREEMPT_TRACER) + defined(CONFIG_STACK_TRACER) + defined(CONFIG_WAKEUP_LATENCY_HIST) + defined(CONFIG_DEBUG_SLAB) + defined(CONFIG_DEBUG_PAGEALLOC) + defined(CONFIG_LOCKDEP) + (defined(CONFIG_FUNCTION) - defined(CONFIG_DYNAMIC_FTRACE)))
 
 #if DEBUG_COUNT > 0
 	printk(KERN_ERR "*****************************************************************************\n");
@@ -955,8 +955,8 @@ static int __init kernel_init(void * unused)
 #ifdef CONFIG_PREEMPT_TRACER
 	printk(KERN_ERR "*        CONFIG_PREEMPT_TRACER                                              *\n");
 #endif
-#ifdef CONFIG_FTRACE
-	printk(KERN_ERR "*        CONFIG_FTRACE                                                      *\n");
+#if defined(CONFIG_FUNCTION) && !defined(CONFIG_DYNAMIC_FTRACE)
+	printk(KERN_ERR "*        CONFIG_FUNCTION                                                    *\n");
 #endif
 #ifdef CONFIG_WAKEUP_LATENCY_HIST
 	printk(KERN_ERR "*        CONFIG_WAKEUP_LATENCY_HIST                                         *\n");
-- 
1.6.2.5


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