diff options
Diffstat (limited to 'sys/amd64/isa/clock.c')
| -rw-r--r-- | sys/amd64/isa/clock.c | 23 |
1 files changed, 1 insertions, 22 deletions
diff --git a/sys/amd64/isa/clock.c b/sys/amd64/isa/clock.c index 88942db..b762442 100644 --- a/sys/amd64/isa/clock.c +++ b/sys/amd64/isa/clock.c @@ -34,7 +34,7 @@ * SUCH DAMAGE. * * from: @(#)clock.c 7.2 (Berkeley) 5/12/91 - * $Id: clock.c,v 1.16 1994/08/18 22:34:50 wollman Exp $ + * $Id: clock.c,v 1.17 1994/09/14 23:09:06 ache Exp $ */ /* @@ -79,27 +79,6 @@ void clkintr(frame) struct clockframe frame; { -#ifdef I586_CPU - /* - * This resets the CPU cycle counter to zero, to make our - * job easier in microtime(). Some fancy ifdefs could speed - * this up for Pentium-only kernels. - * We want this to be done as close as possible to the actual - * timer incrementing in hardclock(), because there is a window - * between the two where the value is no longer valid. Experimentation - * may reveal a good precompensation to apply in microtime(). - */ - if(pentium_mhz) { - __asm __volatile("movl $0x10,%%ecx\n" - "xorl %%eax,%%eax\n" - "movl %%eax,%%edx\n" - ".byte 0x0f, 0x30\n" - "#%0%1" - : "=m"(frame) /* no outputs */ - : "b"(&frame) /* fake input */ - : "ax", "cx", "dx"); - } -#endif hardclock(&frame); } |
