Before I submit this as an actually bug, I'd like the input of some people
who know a little more about the Slab Allocator and Kernel Debugging.
The Slab Allocator includes this line:
#ifdef CONFIG_DEBUG_SLAB
in slab.c (line 89) to activate debugging.
However, I couldn't find anywhere in the code where CONFIG_DEBUG_SLAB is
linked to CONFIG_DEBUG_KERNEL. In other words, setting the kernel as a
debug kernel doesn't automatically set the Slab Allocator to debug too.
1) Am I missing something?
2) Is this intentional or by design?
If this is an actually bug, it can be fixed by inserting the following code
in slab.h immediately following the #include statements:
#ifdef CONFIG_DEBUG_KERNEL
#define CONFIG_DEBUG_SLAB
#endif
Joseph Wagner
On Fri, 6 Dec 2002, Joseph D. Wagner wrote:
| Before I submit this as an actually bug, I'd like the input of some people
| who know a little more about the Slab Allocator and Kernel Debugging.
|
| The Slab Allocator includes this line:
|
| #ifdef CONFIG_DEBUG_SLAB
|
| in slab.c (line 89) to activate debugging.
|
| However, I couldn't find anywhere in the code where CONFIG_DEBUG_SLAB is
| linked to CONFIG_DEBUG_KERNEL. In other words, setting the kernel as a
| debug kernel doesn't automatically set the Slab Allocator to debug too.
CONFIG_DEBUG_SLAB is a separate option, listed under the
Kernel Hacking config menu (Debug memory allocations).
| 1) Am I missing something?
|
| 2) Is this intentional or by design?
Design.
| If this is an actually bug, it can be fixed by inserting the following code
| in slab.h immediately following the #include statements:
|
| #ifdef CONFIG_DEBUG_KERNEL
| #define CONFIG_DEBUG_SLAB
| #endif
Nope, just enable it.
--
~Randy
Thanks for the non-flame clarification.
Joseph Wagner
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Randy.Dunlap
Sent: Friday, December 06, 2002 11:08 PM
To: Joseph D. Wagner
Cc: 'Linux Kernel Development List'
Subject: Re: POSSIBLE BUG: Debugging Not Automatically Activated in Slab.c
On Fri, 6 Dec 2002, Joseph D. Wagner wrote:
| Before I submit this as an actually bug, I'd like the input of some people
| who know a little more about the Slab Allocator and Kernel Debugging.
|
| The Slab Allocator includes this line:
|
| #ifdef CONFIG_DEBUG_SLAB
|
| in slab.c (line 89) to activate debugging.
|
| However, I couldn't find anywhere in the code where CONFIG_DEBUG_SLAB is
| linked to CONFIG_DEBUG_KERNEL. In other words, setting the kernel as a
| debug kernel doesn't automatically set the Slab Allocator to debug too.
CONFIG_DEBUG_SLAB is a separate option, listed under the
Kernel Hacking config menu (Debug memory allocations).
| 1) Am I missing something?
|
| 2) Is this intentional or by design?
Design.
| If this is an actually bug, it can be fixed by inserting the following
code
| in slab.h immediately following the #include statements:
|
| #ifdef CONFIG_DEBUG_KERNEL
| #define CONFIG_DEBUG_SLAB
| #endif
Nope, just enable it.
--
~Randy