| Submitter | Kevin O'Connor |
|---|---|
| Date | 2010-09-06 23:24:11 |
| Message ID | <7986f0442d0e6007a1d479241229158fc4f902b9.1283815188.git.kevin@koconnor.net> |
| Download | mbox | patch |
| Permalink | /patch/1877/ |
| State | Accepted |
| Commit | r5780 |
| Headers | show |
Comments
Am 07.09.2010 01:24, schrieb Kevin O'Connor: > 2ms is enough time to accurately obtain the clock rate. > > Signed-off-by: Kevin O'Connor <kevin@koconnor.net> Acked-by: Patrick Georgi <patrick.georgi@coresystems.de> In as r5780 Thanks, Patrick
Patch
diff --git a/src/cpu/x86/tsc/delay_tsc.c b/src/cpu/x86/tsc/delay_tsc.c index 27c89e3..1127867 100644 --- a/src/cpu/x86/tsc/delay_tsc.c +++ b/src/cpu/x86/tsc/delay_tsc.c @@ -18,8 +18,8 @@ static unsigned long clocks_per_usec; * device. */ -#define CALIBRATE_INTERVAL ((20*CLOCK_TICK_RATE)/1000) /* 20ms */ -#define CALIBRATE_DIVISOR (20*1000) /* 20ms / 20000 == 1usec */ +#define CALIBRATE_INTERVAL ((2*CLOCK_TICK_RATE)/1000) /* 2ms */ +#define CALIBRATE_DIVISOR (2*1000) /* 2ms / 2000 == 1usec */ static unsigned long long calibrate_tsc(void) {
2ms is enough time to accurately obtain the clock rate. Signed-off-by: Kevin O'Connor <kevin@koconnor.net> --- src/cpu/x86/tsc/delay_tsc.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-)