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Code Issues Releases Activity

The count/compare values have to be tracked per CPU.

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Reviewed by:	mav
This commit is contained in:
Jayachandran C. 2010-07-27 15:10:05 +00:00
parent fa597729aa
commit 707fd442af
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=210542
1 changed files with 14 additions and 10 deletions
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24
sys/mips/rmi/tick.c
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@ -62,9 +62,8 @@ struct timecounter *platform_timecounter;
static DPCPU_DEFINE(uint32_t, cycles_per_tick);
static uint32_t cycles_per_usec;
static u_int32_t counter_upper = 0;
static u_int32_t counter_lower_last = 0;
static DPCPU_DEFINE(uint32_t, counter_upper);
static DPCPU_DEFINE(uint32_t, counter_lower_last);
static DPCPU_DEFINE(uint32_t, compare_ticks);
static DPCPU_DEFINE(uint32_t, lost_ticks);
@ -106,6 +105,7 @@ tick_ticker(void)
{
uint64_t ret;
uint32_t ticktock;
uint32_t t_lower_last, t_upper;
/*
* XXX: MIPS64 platforms can read 64-bits of counter directly.
@ -115,12 +115,16 @@ tick_ticker(void)
*/
ticktock = mips_rd_count();
critical_enter();
if (ticktock < counter_lower_last)
counter_upper++;
counter_lower_last = ticktock;
t_lower_last = DPCPU_GET(counter_lower_last);
t_upper = DPCPU_GET(counter_upper);
if (ticktock < t_lower_last)
t_upper++;
t_lower_last = ticktock;
critical_exit();
ret = ((uint64_t) counter_upper << 32) | counter_lower_last;
DPCPU_SET(counter_upper, t_upper);
DPCPU_SET(counter_lower_last, t_lower_last);
ret = ((uint64_t)t_upper << 32) | t_lower_last;
return (ret);
}
@ -265,9 +269,9 @@ clock_intr(void *arg)
mips_wr_compare(0xffffffff);
critical_enter();
if (count < counter_lower_last) {
counter_upper++;
counter_lower_last = count;
if (count < DPCPU_GET(counter_lower_last)) {
DPCPU_SET(counter_upper, DPCPU_GET(counter_upper) + 1);
DPCPU_SET(counter_lower_last, count);
}
if (cycles_per_tick > 0) {