diff options
Diffstat (limited to 'arch/tile/include')
| -rw-r--r-- | arch/tile/include/asm/timex.h | 3 | ||||
| -rw-r--r-- | arch/tile/include/hv/hypervisor.h | 5 |
2 files changed, 8 insertions, 0 deletions
diff --git a/arch/tile/include/asm/timex.h b/arch/tile/include/asm/timex.h index 3baf5fc..29921f0 100644 --- a/arch/tile/include/asm/timex.h +++ b/arch/tile/include/asm/timex.h @@ -38,6 +38,9 @@ static inline cycles_t get_cycles(void) cycles_t get_clock_rate(void); +/* Convert nanoseconds to core clock cycles. */ +cycles_t ns2cycles(unsigned long nsecs); + /* Called at cpu initialization to set some low-level constants. */ void setup_clock(void); diff --git a/arch/tile/include/hv/hypervisor.h b/arch/tile/include/hv/hypervisor.h index f672544..103986b 100644 --- a/arch/tile/include/hv/hypervisor.h +++ b/arch/tile/include/hv/hypervisor.h @@ -964,6 +964,11 @@ HV_ASIDRange hv_inquire_asid(int idx); /** Waits for at least the specified number of nanoseconds then returns. * + * NOTE: this deprecated function currently assumes a 750 MHz clock, + * and is thus not generally suitable for use. New code should call + * hv_sysconf(HV_SYSCONF_CPU_SPEED), compute a cycle count to wait for, + * and delay by looping while checking the cycle counter SPR. + * * @param nanosecs The number of nanoseconds to sleep. */ void hv_nanosleep(int nanosecs); |