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| author | Christoph Lameter <clameter@sgi.com> | 2007-07-15 23:38:14 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-16 09:05:36 -0700 |
| commit | f0630fff54a239efbbd89faf6a62da071ef1ff78 (patch) | |
| tree | 4004adc3adf4dbe1a6188ca0bbd56f7606d4d05f /lib | |
| parent | fc9a07e7bf1a76e710f5df017abb07628db1781d (diff) | |
| download | lwn-f0630fff54a239efbbd89faf6a62da071ef1ff78.tar.gz lwn-f0630fff54a239efbbd89faf6a62da071ef1ff78.zip | |
SLUB: support slub_debug on by default
Add a new configuration variable
CONFIG_SLUB_DEBUG_ON
If set then the kernel will be booted by default with slab debugging
switched on. Similar to CONFIG_SLAB_DEBUG. By default slab debugging
is available but must be enabled by specifying "slub_debug" as a
kernel parameter.
Also add support to switch off slab debugging for a kernel that was
built with CONFIG_SLUB_DEBUG_ON. This works by specifying
slub_debug=-
as a kernel parameter.
Dave Jones wanted this feature.
http://marc.info/?l=linux-kernel&m=118072189913045&w=2
[akpm@linux-foundation.org: clean up switch statement]
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Kconfig.debug | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index fab32a286371..640844024ffd 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -152,6 +152,19 @@ config DEBUG_SLAB_LEAK bool "Memory leak debugging" depends on DEBUG_SLAB +config SLUB_DEBUG_ON + bool "SLUB debugging on by default" + depends on SLUB && SLUB_DEBUG + default n + help + Boot with debugging on by default. SLUB boots by default with + the runtime debug capabilities switched off. Enabling this is + equivalent to specifying the "slub_debug" parameter on boot. + There is no support for more fine grained debug control like + possible with slub_debug=xxx. SLUB debugging may be switched + off in a kernel built with CONFIG_SLUB_DEBUG_ON by specifying + "slub_debug=-". + config DEBUG_PREEMPT bool "Debug preemptible kernel" depends on DEBUG_KERNEL && PREEMPT && TRACE_IRQFLAGS_SUPPORT |