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author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-16 12:02:08 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-16 12:02:08 -0700 |
commit | a3871bd434cfc313cdcd1edc433507298f4aa928 (patch) | |
tree | e47f2796fb8381219aff3cec54328589c948d683 /lib | |
parent | 0052af4411b048eb6c0b0adb73d0fb4803ba1794 (diff) | |
parent | 41ed943d855c3fa2bf6fecc33250b294bd568b7a (diff) | |
download | linux-stable-a3871bd434cfc313cdcd1edc433507298f4aa928.tar.gz linux-stable-a3871bd434cfc313cdcd1edc433507298f4aa928.tar.bz2 linux-stable-a3871bd434cfc313cdcd1edc433507298f4aa928.zip |
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.debug | 33 |
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 |