8_27_log: Various sleep functions
C Program Sleep () ----- Second; USLEP () ------ microsecond; nanosleep () ------- microsecond level
Head file check MAN 3 *; (unistd.h)
Nuclear module udelay () ---- millisecond; ndelay () ---- microsecond;
Header DELAY.H
Compile time gcc command plus -i / usr / src / linux - ** - **. * / Include / asm
