- S390, S390x
- ARM 32/64
- MIPS
+ - NIOS2
- Alpha
- ia64
- Sparcv9 32/64
grace-period detection speed, read-side speed and flexibility.
Dynamically detects kernel support for `sys_membarrier()`. Falls back
on `urcu-mb` scheme if support is not present, which has slower
-read-side.
+read-side. Use the --disable-sys-membarrier-fallback configure option
+to disable the fall back, thus requiring `sys_membarrier()` to be
+available. This gives a small speedup when `sys_membarrier()` is
+supported by the kernel, and aborts in the library constructor if not
+supported.
### Usage of `liburcu-qsbr`