diff options
| author | wollman <wollman@FreeBSD.org> | 1995-12-20 20:57:33 +0000 |
|---|---|---|
| committer | wollman <wollman@FreeBSD.org> | 1995-12-20 20:57:33 +0000 |
| commit | 19914706e411f628cfd36b7f46094cb62d6b815e (patch) | |
| tree | ca88a33b984ce6cbb043c04f8e340a8cdeb15911 /sys | |
| parent | d1c087d3d5f89d423c124b7cc55fa3e76bcf733d (diff) | |
| download | FreeBSD-src-19914706e411f628cfd36b7f46094cb62d6b815e.zip FreeBSD-src-19914706e411f628cfd36b7f46094cb62d6b815e.tar.gz | |
Increase Pentium cyclecounter calibration time to 131072 us. This
experimentally seems to give better results on my machine.
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/amd64/amd64/tsc.c | 4 | ||||
| -rw-r--r-- | sys/amd64/isa/clock.c | 4 | ||||
| -rw-r--r-- | sys/i386/i386/tsc.c | 4 | ||||
| -rw-r--r-- | sys/i386/isa/clock.c | 4 | ||||
| -rw-r--r-- | sys/isa/atrtc.c | 4 |
5 files changed, 10 insertions, 10 deletions
diff --git a/sys/amd64/amd64/tsc.c b/sys/amd64/amd64/tsc.c index b7c56b7..65668d1 100644 --- a/sys/amd64/amd64/tsc.c +++ b/sys/amd64/amd64/tsc.c @@ -34,7 +34,7 @@ * SUCH DAMAGE. * * from: @(#)clock.c 7.2 (Berkeley) 5/12/91 - * $Id: clock.c,v 1.40 1995/12/10 13:38:23 phk Exp $ + * $Id: clock.c,v 1.41 1995/12/14 23:01:51 bde Exp $ */ /* @@ -295,7 +295,7 @@ calibrate_cyclecounter(void) */ unsigned long long count; -#define howlong ((unsigned)4*tick) +#define howlong 131072UL __asm __volatile(".byte 0x0f, 0x30" : : "A"(0LL), "c" (0x10)); DELAY(howlong); __asm __volatile(".byte 0xf,0x31" : "=A" (count)); diff --git a/sys/amd64/isa/clock.c b/sys/amd64/isa/clock.c index b7c56b7..65668d1 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 1.40 1995/12/10 13:38:23 phk Exp $ + * $Id: clock.c,v 1.41 1995/12/14 23:01:51 bde Exp $ */ /* @@ -295,7 +295,7 @@ calibrate_cyclecounter(void) */ unsigned long long count; -#define howlong ((unsigned)4*tick) +#define howlong 131072UL __asm __volatile(".byte 0x0f, 0x30" : : "A"(0LL), "c" (0x10)); DELAY(howlong); __asm __volatile(".byte 0xf,0x31" : "=A" (count)); diff --git a/sys/i386/i386/tsc.c b/sys/i386/i386/tsc.c index b7c56b7..65668d1 100644 --- a/sys/i386/i386/tsc.c +++ b/sys/i386/i386/tsc.c @@ -34,7 +34,7 @@ * SUCH DAMAGE. * * from: @(#)clock.c 7.2 (Berkeley) 5/12/91 - * $Id: clock.c,v 1.40 1995/12/10 13:38:23 phk Exp $ + * $Id: clock.c,v 1.41 1995/12/14 23:01:51 bde Exp $ */ /* @@ -295,7 +295,7 @@ calibrate_cyclecounter(void) */ unsigned long long count; -#define howlong ((unsigned)4*tick) +#define howlong 131072UL __asm __volatile(".byte 0x0f, 0x30" : : "A"(0LL), "c" (0x10)); DELAY(howlong); __asm __volatile(".byte 0xf,0x31" : "=A" (count)); diff --git a/sys/i386/isa/clock.c b/sys/i386/isa/clock.c index b7c56b7..65668d1 100644 --- a/sys/i386/isa/clock.c +++ b/sys/i386/isa/clock.c @@ -34,7 +34,7 @@ * SUCH DAMAGE. * * from: @(#)clock.c 7.2 (Berkeley) 5/12/91 - * $Id: clock.c,v 1.40 1995/12/10 13:38:23 phk Exp $ + * $Id: clock.c,v 1.41 1995/12/14 23:01:51 bde Exp $ */ /* @@ -295,7 +295,7 @@ calibrate_cyclecounter(void) */ unsigned long long count; -#define howlong ((unsigned)4*tick) +#define howlong 131072UL __asm __volatile(".byte 0x0f, 0x30" : : "A"(0LL), "c" (0x10)); DELAY(howlong); __asm __volatile(".byte 0xf,0x31" : "=A" (count)); diff --git a/sys/isa/atrtc.c b/sys/isa/atrtc.c index b7c56b7..65668d1 100644 --- a/sys/isa/atrtc.c +++ b/sys/isa/atrtc.c @@ -34,7 +34,7 @@ * SUCH DAMAGE. * * from: @(#)clock.c 7.2 (Berkeley) 5/12/91 - * $Id: clock.c,v 1.40 1995/12/10 13:38:23 phk Exp $ + * $Id: clock.c,v 1.41 1995/12/14 23:01:51 bde Exp $ */ /* @@ -295,7 +295,7 @@ calibrate_cyclecounter(void) */ unsigned long long count; -#define howlong ((unsigned)4*tick) +#define howlong 131072UL __asm __volatile(".byte 0x0f, 0x30" : : "A"(0LL), "c" (0x10)); DELAY(howlong); __asm __volatile(".byte 0xf,0x31" : "=A" (count)); |
