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Commit 02608bef authored by Dave Young's avatar Dave Young Committed by Rusty Russell
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module: add kernel param to force 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.

Since modules_disabled is int, so here use bint type in core_param.
TODO: make sysctl accept bool and change modules_disabled to bool

Signed-off-by: default avatarDave Young <dyoung@redhat.com>
Signed-off-by: default avatarRusty Russell <rusty@rustcorp.com.au>
parent e22057c8

Documentation/kernel-parameters.txt

+2 −0
Original line number Diff line number Diff line
@@ -1869,6 +1869,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted. 
			shutdown the other cpus.  Instead use the REBOOT_VECTOR

			irq.



	nomodule	Disable module load



	nopat		[X86] Disable PAT (page attribute table extension of

			pagetables) support.

kernel/module.c

+1 −0
Original line number Diff line number Diff line
@@ -105,6 +105,7 @@ struct list_head *kdb_modules = &modules; /* kdb needs the list of modules */ 


/* Block module loading/unloading? */

int modules_disabled = 0;

core_param(nomodule, modules_disabled, bint, 0);



/* Waiting for a module to finish initializing? */

static DECLARE_WAIT_QUEUE_HEAD(module_wq);