CONFIG_METAG_SMP_WRITE_REORDERING is not available for thedefaultarchitecture x86.
Result is shown for architecture metag
CONFIG_METAG_SMP_WRITE_REORDERING (not configurable)
configname: CONFIG_METAG_SMP_WRITE_REORDERING
Linux Kernel Configuration
└─>Processor type and features
└─>METAG_SMP_WRITE_REORDERING
In linux kernel since version 3.1 (release Date: 2011-10-24)
This attempts to prevent cache-memory incoherence due to external
reordering of writes from different hardware threads when SMP is
enabled. It adds fences (system event 0) to smp_mb and smp_rmb in an
attempt to catch some of the cases, and also before writes to shared
memory in LOCK1 protected atomics and spinlocks.
This will not completely prevent cache incoherency on affected cores.
reordering of writes from different hardware threads when SMP is
enabled. It adds fences (system event 0) to smp_mb and smp_rmb in an
attempt to catch some of the cases, and also before writes to shared
memory in LOCK1 protected atomics and spinlocks.
This will not completely prevent cache incoherency on affected cores.