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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2017-05-15 14:57:01 -0700
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2017-06-08 18:52:42 -0700
commitbd8cc5a062f41e334596edbe823e2fa0adddd1b7 (patch)
treed484e0604f4bd8634f21bde4ba19edd1f6879873 /init
parent7f0cd6333086ae09962791c31f0d4845a3329df9 (diff)
downloadop-kernel-dev-bd8cc5a062f41e334596edbe823e2fa0adddd1b7.zip
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srcu: Remove Classic SRCU
Classic SRCU was only ever intended to be a fallback in case of issues with Tree/Tiny SRCU, and the latter two are doing quite well in testing. This commit therefore removes Classic SRCU. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'init')
-rw-r--r--init/Kconfig21
1 files changed, 2 insertions, 19 deletions
diff --git a/init/Kconfig b/init/Kconfig
index 6f257d5..2aa14ff 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -526,32 +526,15 @@ config SRCU
permits arbitrary sleeping or blocking within RCU read-side critical
sections.
-config CLASSIC_SRCU
- bool "Use v4.11 classic SRCU implementation"
- default n
- depends on RCU_EXPERT && SRCU
- help
- This option selects the traditional well-tested classic SRCU
- implementation from v4.11, as might be desired for enterprise
- Linux distributions. Without this option, the shiny new
- Tiny SRCU and Tree SRCU implementations are used instead.
- At some point, it is hoped that Tiny SRCU and Tree SRCU
- will accumulate enough test time and confidence to allow
- Classic SRCU to be dropped entirely.
-
- Say Y if you need a rock-solid SRCU.
-
- Say N if you would like help test Tree SRCU.
-
config TINY_SRCU
bool
- default y if SRCU && TINY_RCU && !CLASSIC_SRCU
+ default y if SRCU && TINY_RCU
help
This option selects the single-CPU non-preemptible version of SRCU.
config TREE_SRCU
bool
- default y if SRCU && !TINY_RCU && !CLASSIC_SRCU
+ default y if SRCU && !TINY_RCU
help
This option selects the full-fledged version of SRCU.
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