diff options
Diffstat (limited to 'arch/tile/kernel/time.c')
| -rw-r--r-- | arch/tile/kernel/time.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/tile/kernel/time.c b/arch/tile/kernel/time.c index f2e156e..49a605b 100644 --- a/arch/tile/kernel/time.c +++ b/arch/tile/kernel/time.c @@ -224,3 +224,13 @@ int setup_profiling_timer(unsigned int multiplier) { return -EINVAL; } + +/* + * Use the tile timer to convert nsecs to core clock cycles, relying + * on it having the same frequency as SPR_CYCLE. + */ +cycles_t ns2cycles(unsigned long nsecs) +{ + struct clock_event_device *dev = &__get_cpu_var(tile_timer); + return ((u64)nsecs * dev->mult) >> dev->shift; +} |