22 Apr
2015
22 Apr
'15
10:11 a.m.
On Wed, Apr 22, 2015 at 10:45:23AM +0200, Thomas Gleixner wrote:
So we could save one translation step if we implement new syscalls which have a scalar nsec interface instead of the timespec/timeval cruft and let user space do the translation to whatever it wants.
+1
I personally would welcome such an interface as it makes user space programming simpler. Just (re)arming a periodic nanosleep based on absolute expiry time is horrible stupid today:
Jup.
Thoughts?
Current user space example: The linuxptp programs are doing ns64 to timespec conversions to call into the kernel, which then does timespec to ns64 to talk to the hardware. I would bet that most (all?) use cases are better served with 64 bit nanosecond system calls.
Thanks, Richard