Hi, (2014/12/10 17:19), Namhyung Kim wrote: > Hi Michael, > > On Wed, Dec 10, 2014 at 1:38 PM, Michael Ellerman <m...@ellerman.id.au> wrote: >> usleep is a Fedoraism, it's not generally available on Debian based >> systems AFAICS. >> >> GNU sleep accepts a floating point argument, so use that instead. > > I tested it on busybox not Debian, sorry. But it seems busybox's > sleep doesn't support floating point argument.. > > / # ls -l `which sleep` > lrwxrwxrwx 1 root rooot 7 May 22 2014 /bin/sleep -> busybox > > / # sleep 0.1 > sleep: invalid number '0.1'
I also have same result. Basically, ftracetest should be able to run on busybox. So, I think we'd better check whether usleep is available, and if not, fallback to sleep like as below. if which usleep &> /dev/null; then usleep 1 else sleep 0.000001 fi Thank you, -- Masami HIRAMATSU Software Platform Research Dept. Linux Technology Research Center Hitachi, Ltd., Yokohama Research Laboratory E-mail: masami.hiramatsu...@hitachi.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/