diff options
Diffstat (limited to 'sys/kern/kern_clock.c')
| -rw-r--r-- | sys/kern/kern_clock.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/sys/kern/kern_clock.c b/sys/kern/kern_clock.c index da05cc1..a35e43b 100644 --- a/sys/kern/kern_clock.c +++ b/sys/kern/kern_clock.c @@ -374,6 +374,12 @@ int profprocs; int ticks; int psratio; +int timer1hz; +int timer2hz; +static DPCPU_DEFINE(u_int, hard_cnt); +static DPCPU_DEFINE(u_int, stat_cnt); +static DPCPU_DEFINE(u_int, prof_cnt); + /* * Initialize clock frequencies and start both clocks running. */ @@ -403,6 +409,52 @@ initclocks(dummy) #endif } +void +timer1clock(int usermode, uintfptr_t pc) +{ + u_int *cnt; + + cnt = DPCPU_PTR(hard_cnt); + *cnt += hz; + if (*cnt >= timer1hz) { + *cnt -= timer1hz; + if (*cnt >= timer1hz) + *cnt = 0; + if (PCPU_GET(cpuid) == 0) + hardclock(usermode, pc); + else + hardclock_cpu(usermode); + } + if (timer2hz == 0) + timer2clock(usermode, pc); +} + +void +timer2clock(int usermode, uintfptr_t pc) +{ + u_int *cnt; + int t2hz = timer2hz ? timer2hz : timer1hz; + + cnt = DPCPU_PTR(stat_cnt); + *cnt += stathz; + if (*cnt >= t2hz) { + *cnt -= t2hz; + if (*cnt >= t2hz) + *cnt = 0; + statclock(usermode); + } + if (profprocs == 0) + return; + cnt = DPCPU_PTR(prof_cnt); + *cnt += profhz; + if (*cnt >= t2hz) { + *cnt -= t2hz; + if (*cnt >= t2hz) + *cnt = 0; + profclock(usermode, pc); + } +} + /* * Each time the real-time timer fires, this function is called on all CPUs. * Note that hardclock() calls hardclock_cpu() for the boot CPU, so only |
