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authorPaul E. McKenney <paulmck@us.ibm.com>2005-10-30 18:03:12 -0500
committerLinus Torvalds <torvalds@g5.osdl.org>2005-10-30 20:37:27 -0500
commita241ec65aeac3d69a08a7b153cccbdb7ea35063f (patch)
treee96585e8b1e699f31bad1fa61f34d2ec7c3a187c /lib/Kconfig.debug
parentb3099b48da23686d8378133b0264ee00385ee5fa (diff)
[PATCH] RCU torture-testing kernel module
This patch is a rewrite of the one submitted on October 1st, using modules (http://marc.theaimsgroup.com/?l=linux-kernel&m=112819093522998&w=2). This rewrite adds a tristate CONFIG_RCU_TORTURE_TEST, which enables an intense torture test of the RCU infratructure. This is needed due to the continued changes to the RCU infrastructure to accommodate dynamic ticks, CPU hotplug, realtime, and so on. Most of the code is in a separate file that is compiled only if the CONFIG variable is set. Documentation on how to run the test and interpret the output is also included. This code has been tested on i386 and ppc64, and an earlier version of the code has received extensive testing on a number of architectures as part of the PREEMPT_RT patchset. Signed-off-by: "Paul E. McKenney" <paulmck@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'lib/Kconfig.debug')
-rw-r--r--lib/Kconfig.debug21
1 files changed, 21 insertions, 0 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index f9306b14d2a6..156822e3cc79 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -168,6 +168,14 @@ config DEBUG_FS
168 168
169 If unsure, say N. 169 If unsure, say N.
170 170
171config DEBUG_VM
172 bool "Debug VM"
173 depends on DEBUG_KERNEL
174 help
175 Enable this to debug the virtual-memory system.
176
177 If unsure, say N.
178
171config FRAME_POINTER 179config FRAME_POINTER
172 bool "Compile the kernel with frame pointers" 180 bool "Compile the kernel with frame pointers"
173 depends on DEBUG_KERNEL && (X86 || CRIS || M68K || M68KNOMMU || FRV || UML) 181 depends on DEBUG_KERNEL && (X86 || CRIS || M68K || M68KNOMMU || FRV || UML)
@@ -178,3 +186,16 @@ config FRAME_POINTER
178 some architectures or if you use external debuggers. 186 some architectures or if you use external debuggers.
179 If you don't debug the kernel, you can say N. 187 If you don't debug the kernel, you can say N.
180 188
189config RCU_TORTURE_TEST
190 tristate "torture tests for RCU"
191 depends on DEBUG_KERNEL
192 default n
193 help
194 This option provides a kernel module that runs torture tests
195 on the RCU infrastructure. The kernel module may be built
196 after the fact on the running kernel to be tested, if desired.
197
198 Say Y here if you want RCU torture tests to start automatically
199 at boot time (you probably don't).
200 Say M if you want the RCU torture tests to build as a module.
201 Say N if you are unsure.