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authorKyle McMartin <kyle@redhat.com>2009-03-02 04:41:41 +0300
committerIngo Molnar <mingo@elte.hu>2009-03-02 14:04:01 +0300
commit3e8ebb5c433f016dff5824587436642d87fc2e6c (patch)
treecc6c7cef8faadc1e61f66cf1241863afca722ebb
parent778ef1e6cbb049c9bcbf405936ee6f2b6e451892 (diff)
downloadlinux-3e8ebb5c433f016dff5824587436642d87fc2e6c.tar.xz
debug_objects: add boot-parameter toggle to turn object debugging off again
While trying to debug why my Atom netbook is falling over booting rawhide debug-enabled kernels, I stumbled across the fact that we've been enabling object debugging by default. However, once you default it to on, you've got no way to turn it back off again at runtime. Add a boolean toggle to turn it off. I would just make it an int module_param, however people may already expect the boolean enable behaviour, so just add an analogue for disabling. Signed-off-by: Kyle McMartin <kyle@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r--Documentation/kernel-parameters.txt3
-rw-r--r--lib/debugobjects.c8
2 files changed, 11 insertions, 0 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 54f21a5c262b..1a328f33e1df 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -604,6 +604,9 @@ and is between 256 and 4096 characters. It is defined in the file
debug_objects [KNL] Enable object debugging
+ no_debug_objects
+ [KNL] Disable object debugging
+
debugpat [X86] Enable PAT debugging
decnet.addr= [HW,NET]
diff --git a/lib/debugobjects.c b/lib/debugobjects.c
index 5d99be1fd988..90e46fa12721 100644
--- a/lib/debugobjects.c
+++ b/lib/debugobjects.c
@@ -55,7 +55,15 @@ static int __init enable_object_debug(char *str)
debug_objects_enabled = 1;
return 0;
}
+
+static int __init disable_object_debug(char *str)
+{
+ debug_objects_enabled = 0;
+ return 0;
+}
+
early_param("debug_objects", enable_object_debug);
+early_param("no_debug_objects", disable_object_debug);
static const char *obj_states[ODEBUG_STATE_MAX] = {
[ODEBUG_STATE_NONE] = "none",