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authorLinus Torvalds <torvalds@linux-foundation.org>2016-05-16 12:02:08 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-05-16 12:02:08 -0700
commita3871bd434cfc313cdcd1edc433507298f4aa928 (patch)
treee47f2796fb8381219aff3cec54328589c948d683 /lib
parent0052af4411b048eb6c0b0adb73d0fb4803ba1794 (diff)
parent41ed943d855c3fa2bf6fecc33250b294bd568b7a (diff)
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Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RCU updates from Ingo Molnar: "The main changes are: - Documentation updates, including fixes to the design-level requirements documentation and a fixed version of the design-level data-structure documentation. These fixes include removing cartoons and getting rid of the html/htmlx duplication. - Further improvements to the new-age expedited grace periods. - Miscellaneous fixes. - Torture-test changes, including a new rcuperf module for measuring RCU grace-period performance and scalability, which is useful for the expedited-grace-period changes" * 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (56 commits) rcutorture: Add boot-time adjustment of leaf fanout rcutorture: Add irqs-disabled test for call_rcu() rcutorture: Dump trace buffer upon shutdown rcutorture: Don't rebuild identical kernel rcutorture: Add OS-jitter capability documentation: Add documentation for RCU's major data structures rcutorture: Convert test duration to seconds early torture: Kill qemu, not parent process torture: Clarify refusal to run more than one torture test rcutorture: Consider FROZEN hotplug notifier transitions rcutorture: Remove redundant initialization to zero rcuperf: Do not wake up shutdown wait queue if "shutdown" is false. rcutorture: Add largish-system rcuperf scenario rcutorture: Avoid RCU CPU stall warning and RT throttling rcutorture: Add rcuperf holdoff boot parameter to reduce interference rcutorture: Make scripts analyze rcuperf trace data, if present rcutorture: Make rcuperf collect expedited event-trace data rcutorture: Print measure of batching efficiency rcutorture: Set rcuperf writer kthreads to real-time priority rcutorture: Bind rcuperf reader/writer kthreads to CPUs ...
Diffstat (limited to 'lib')
-rw-r--r--lib/Kconfig.debug33
1 files changed, 33 insertions, 0 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 1e9a607534ca..f4b797a690ba 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -1289,6 +1289,39 @@ config TORTURE_TEST
tristate
default n
+config RCU_PERF_TEST
+ tristate "performance tests for RCU"
+ depends on DEBUG_KERNEL
+ select TORTURE_TEST
+ select SRCU
+ select TASKS_RCU
+ default n
+ help
+ This option provides a kernel module that runs performance
+ tests on the RCU infrastructure. The kernel module may be built
+ after the fact on the running kernel to be tested, if desired.
+
+ Say Y here if you want RCU performance tests to be built into
+ the kernel.
+ Say M if you want the RCU performance tests to build as a module.
+ Say N if you are unsure.
+
+config RCU_PERF_TEST_RUNNABLE
+ bool "performance tests for RCU runnable by default"
+ depends on RCU_PERF_TEST = y
+ default n
+ help
+ This option provides a way to build the RCU performance tests
+ directly into the kernel without them starting up at boot time.
+ You can use /sys/module to manually override this setting.
+ This /proc file is available only when the RCU performance
+ tests have been built into the kernel.
+
+ Say Y here if you want the RCU performance tests to start during
+ boot (you probably don't).
+ Say N here if you want the RCU performance tests to start only
+ after being manually enabled via /sys/module.
+
config RCU_TORTURE_TEST
tristate "torture tests for RCU"
depends on DEBUG_KERNEL