Commit-ID: 3e8ebb5c433f016dff5824587436642d87fc2e6c
Gitweb: http://git.kernel.org/tip/3e8ebb5c433f016dff5824587436642d87fc2e6c
Author: Kyle McMartin <kyle@xxxxxxxxxx>
AuthorDate: Sun, 1 Mar 2009 20:41:41 -0500
Commit: Ingo Molnar <mingo@xxxxxxx>
CommitDate: Mon, 2 Mar 2009 12:04:01 +0100
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@xxxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
---
Documentation/kernel-parameters.txt | 3 +++
lib/debugobjects.c | 8 ++++++++
2 files changed, 11 insertions(+), 0 deletions(-)
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 54f21a5..1a328f3 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 5d99be1..90e46fa 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",
--
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