From: Dave Young <dyoung@redhat.com>
To: rusty@rustcorp.com.au, linux-kernel@vger.kernel.org
Subject: [PATCH] add kernel parameter to disable module load
Date: Sat, 28 Jan 2012 11:34:50 +0800 [thread overview]
Message-ID: <20120128033450.GA2138@darkstar> (raw)
Sometimes we need to test a kernel of same version with code or config
option changes.
We already have sysctl to disable module load, but add a kernel
parameter will be more convenient.
---
Documentation/kernel-parameters.txt | 2 ++
kernel/module.c | 7 +++++++
2 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index e229769..b5cd482 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1796,6 +1796,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
nomfgpt [X86-32] Disable Multi-Function General Purpose
Timer usage (for AMD Geode machines).
+ nomodule Disable module load
+
nopat [X86] Disable PAT (page attribute table extension of
pagetables) support.
diff --git a/kernel/module.c b/kernel/module.c
index 178333c..72395f5 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -3478,6 +3478,13 @@ void print_modules(void)
printk("\n");
}
+static int __init module_load_disable(char *str)
+{
+ modules_disabled = 1;
+ return 1;
+}
+__setup("nomodule", module_load_disable);
+
#ifdef CONFIG_MODVERSIONS
/* Generate the signature for all relevant module structures here.
* If these change, we don't want to try to parse the module. */
--
1.7.4.4
next reply other threads:[~2012-01-28 3:34 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-28 3:34 Dave Young [this message]
2012-01-29 0:51 ` [PATCH] add kernel parameter to disable module load Rusty Russell
2012-01-30 7:38 ` Dave Young
2012-01-31 2:44 ` Dave Young
2012-01-31 2:59 ` Rusty Russell
2012-01-31 3:36 ` Dave Young
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