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Subject[PATCH] add kernel parameter to disable module load
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


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