linux-kernel - [PATCH] make loglevel related commandline to early

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Date:	Fri, 01 Feb 2008 11:35:35 -0800
From:	Yinghai Lu <Yinghai.Lu@....COM>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>
Cc:	Andi Kleen <andi@...stfloor.org>, linux-kernel@...r.kernel.org
Subject: [PATCH] make loglevel related commandline to early_param v2

[PATCH] make loglevel related commandline to early_param v2

so we can use them for early console like 
console=uart8250,io,0x3f8,115200n8
earlycon=uart8250,io,0x3f8,115200n8
early_printk

otherwise printk(KERN_DEBUG "debug msg") will not print out to console even
"debug" command line is used.

andi point out early_param need to return 0 instead 1.

Ingo had another patch in x86.git to process ignore_loglevel

Signed-off-by: Yinghai Lu <yinghai.lu@....com>

diff --git a/init/main.c b/init/main.c
index cb81ed1..3741bda 100644
--- a/init/main.c
+++ b/init/main.c
@@ -232,30 +232,26 @@ EXPORT_SYMBOL(loops_per_jiffy);
 
 static int __init debug_kernel(char *str)
 {
-	if (*str)
-		return 0;
 	console_loglevel = 10;
-	return 1;
+	return 0;
 }
 
 static int __init quiet_kernel(char *str)
 {
-	if (*str)
-		return 0;
 	console_loglevel = 4;
-	return 1;
+	return 0;
 }
 
-__setup("debug", debug_kernel);
-__setup("quiet", quiet_kernel);
+early_param("debug", debug_kernel);
+early_param("quiet", quiet_kernel);
 
 static int __init loglevel(char *str)
 {
 	get_option(&str, &console_loglevel);
-	return 1;
+	return 0;
 }
 
-__setup("loglevel=", loglevel);
+early_param("loglevel", loglevel);
 
 /*
  * Unknown boot options get handed to init, unless they look like
--
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