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| author | Masao Uebayashi <uebayasi@cvs.openbsd.org> | 2014-07-11 10:53:08 +0000 |
|---|---|---|
| committer | Masao Uebayashi <uebayasi@cvs.openbsd.org> | 2014-07-11 10:53:08 +0000 |
| commit | 123f4b6634c6f64980c8a879dc8140fcc706d6d2 (patch) | |
| tree | 8f16526685cec43a88ad22499b7316fe46507593 /sys/arch/arm/include/endian.h | |
| parent | 7153f32429c8f459cac9dbed87a626718d2b84b9 (diff) | |
CPU_BUSY_CYCLE(): A new MI statement for busy loop power reduction
The new CPU_BUSY_CYCLE() may be put in a busy loop body so that CPU can reduce
power consumption, as Linux's cpu_relax() and FreeBSD's cpu_spinwait(). To
start minimally, use PAUSE on i386/amd64 and empty on others. The name is
chosen following the existing cpu_idle_*() functions. Naming and API may be
polished later.
OK kettenis@
Diffstat (limited to 'sys/arch/arm/include/endian.h')
0 files changed, 0 insertions, 0 deletions