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| author |   Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-05-10 14:36:55 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-06-08 18:52:38 -0700 |
| commit | 90040c9e3015054db7efa0101afdd446d1167fe8 (patch) | |
| tree | 920cd620302375d11e8ecf0d1c270a821c2d97b5 /tools/testing/selftests/rcutorture/doc/TREE_RCU-kconfig.txt | |
| parent | srcu: Use rnp->lock wrappers to replace explicit memory barriers (diff) | |
| download | linux-dev-90040c9e3015054db7efa0101afdd446d1167fe8.tar.xz linux-dev-90040c9e3015054db7efa0101afdd446d1167fe8.zip | |
rcu: Remove *_SLOW_* Kconfig options
The RCU_TORTURE_TEST_SLOW_PREINIT, RCU_TORTURE_TEST_SLOW_PREINIT_DELAY,
RCU_TORTURE_TEST_SLOW_PREINIT_DELAY, RCU_TORTURE_TEST_SLOW_INIT,
RCU_TORTURE_TEST_SLOW_INIT_DELAY, RCU_TORTURE_TEST_SLOW_CLEANUP,
and RCU_TORTURE_TEST_SLOW_CLEANUP_DELAY Kconfig options are only
useful for torture testing, and there are the rcutree.gp_cleanup_delay,
rcutree.gp_init_delay, and rcutree.gp_preinit_delay kernel boot parameters
that rcutorture can use instead. The effect of these parameters is to
artificially slow down grace period initialization and cleanup in order
to make some types of race conditions happen more often.
This commit therefore simplifies Tree RCU a bit by removing the Kconfig
options and adding the corresponding kernel parameters to rcutorture's
.boot files instead. However, this commit also leaves out the kernel
parameters for TREE02, TREE04, and TREE07 in order to have about the
same number of tests slowed as not slowed. TREE01, TREE03, TREE05,
and TREE06 are slowed, and the rest are not slowed.
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'tools/testing/selftests/rcutorture/doc/TREE_RCU-kconfig.txt')
| -rw-r--r-- | tools/testing/selftests/rcutorture/doc/TREE_RCU-kconfig.txt | 9 |
1 files changed, 0 insertions, 9 deletions
diff --git a/tools/testing/selftests/rcutorture/doc/TREE_RCU-kconfig.txt b/tools/testing/selftests/rcutorture/doc/TREE_RCU-kconfig.txt index 364801b1a230..1dfec4657d95 100644 --- a/tools/testing/selftests/rcutorture/doc/TREE_RCU-kconfig.txt +++ b/tools/testing/selftests/rcutorture/doc/TREE_RCU-kconfig.txt @@ -28,9 +28,6 @@ CONFIG_RCU_TRACE -- Do half. CONFIG_SMP -- Need one !SMP for PREEMPT_RCU. CONFIG_RCU_EXPERT=n -- Do a few, but these have to be vanilla configurations. CONFIG_RCU_EQS_DEBUG -- Do at least one for CONFIG_NO_HZ_FULL and not. -CONFIG_RCU_TORTURE_TEST_SLOW_CLEANUP -- Do for all but a couple TREE scenarios. -CONFIG_RCU_TORTURE_TEST_SLOW_INIT -- Do for all but a couple TREE scenarios. -CONFIG_RCU_TORTURE_TEST_SLOW_PREINIT -- Do for all but a couple TREE scenarios. RCU-bh: Do one with PREEMPT and one with !PREEMPT. RCU-sched: Do one with PREEMPT but not BOOST. @@ -78,12 +75,6 @@ CONFIG_RCU_TORTURE_TEST_RUNNABLE Always used in KVM testing. -CONFIG_RCU_TORTURE_TEST_SLOW_PREINIT_DELAY -CONFIG_RCU_TORTURE_TEST_SLOW_INIT_DELAY -CONFIG_RCU_TORTURE_TEST_SLOW_CLEANUP_DELAY - - Inspection suffices, ignore. - CONFIG_PREEMPT_RCU CONFIG_TREE_RCU CONFIG_TINY_RCU |