[PATCH v6] powerpc/vdso64: Add support for CLOCK_{REALTIME/MONOTONIC}_COARSE

2017-10-15 Thread Santosh Sivaraj
Current vDSO64 implementation does not have support for coarse clocks (CLOCK_MONOTONIC_COARSE, CLOCK_REALTIME_COARSE), for which it falls back to system call, increasing the response time, vDSO implementation reduces the cycle time. Below is a benchmark of the difference in execution times.

Re: [PATCH v6] powerpc/vdso64: Add support for CLOCK_{REALTIME/MONOTONIC}_COARSE

2017-10-11 Thread Santosh Sivaraj
* Naveen N. Rao wrote (on 2017-10-11 07:04:43 +): > Hi Santosh, > This seems to have gone from v4 to v6 -- did I miss v5? Nope, this is indeed v5, a typo :-( > > On 2017/10/10 11:10PM, Santosh Sivaraj wrote: > > Current vDSO64 implementation does not have

Re: [PATCH v6] powerpc/vdso64: Add support for CLOCK_{REALTIME/MONOTONIC}_COARSE

2017-10-11 Thread Naveen N. Rao
Hi Santosh, This seems to have gone from v4 to v6 -- did I miss v5? On 2017/10/10 11:10PM, Santosh Sivaraj wrote: > Current vDSO64 implementation does not have support for coarse clocks > (CLOCK_MONOTONIC_COARSE, CLOCK_REALTIME_COARSE), for which it falls back > to system call, increasing the

[PATCH v6] powerpc/vdso64: Add support for CLOCK_{REALTIME/MONOTONIC}_COARSE

2017-10-10 Thread Santosh Sivaraj
Current vDSO64 implementation does not have support for coarse clocks (CLOCK_MONOTONIC_COARSE, CLOCK_REALTIME_COARSE), for which it falls back to system call, increasing the response time, vDSO implementation reduces the cycle time. Below is a benchmark of the difference in execution times.