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| author |   Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-03-25 17:23:44 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-04-18 11:38:23 -0700 |
| commit | dad81a2026841b5e2651aab58a7398c13cc05847 (patch) | |
| tree | f666432234764e97893d37155429223e2c44bd8c /include/linux/srcu.h | |
| parent | srcutorture: Print Tiny SRCU reader statistics (diff) | |
| download | linux-dev-dad81a2026841b5e2651aab58a7398c13cc05847.tar.xz linux-dev-dad81a2026841b5e2651aab58a7398c13cc05847.zip | |
srcu: Introduce CLASSIC_SRCU Kconfig option
The TREE_SRCU rewrite is large and a bit on the non-simple side, so
this commit helps reduce risk by allowing the old v4.11 SRCU algorithm
to be selected using a new CLASSIC_SRCU Kconfig option that depends
on RCU_EXPERT. The default is to use the new TREE_SRCU and TINY_SRCU
algorithms, in order to help get these the testing that they need.
However, if your users do not require the update-side scalability that
is to be provided by TREE_SRCU, select RCU_EXPERT and then CLASSIC_SRCU
to revert back to the old classic SRCU algorithm.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'include/linux/srcu.h')
| -rw-r--r-- | include/linux/srcu.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/srcu.h b/include/linux/srcu.h index 907f09b14eda..167ad8831aaf 100644 --- a/include/linux/srcu.h +++ b/include/linux/srcu.h @@ -60,6 +60,8 @@ int init_srcu_struct(struct srcu_struct *sp); #include <linux/srcutiny.h> #elif defined(CONFIG_TREE_SRCU) #include <linux/srcutree.h> +#elif defined(CONFIG_CLASSIC_SRCU) +#include <linux/srcuclassic.h> #else #error "Unknown SRCU implementation specified to kernel configuration" #endif |