static void p4_check_ctrs(unsigned int const cpu,
struct op_msrs const * const msrs,
struct pt_regs * const regs)
{
unsigned long ctr, low, high, stag, real;
int i;
stag = get_stagger();
for (i = 0; i < num_counters; ++i) {
if (!sysctl.ctr[i].enabled)
continue;
real = VIRT_CTR(stag, i);
CCCR_READ(low, high, real);
CTR_READ(ctr, high, real);
if (CCCR_OVF_P(low) || CTR_OVERFLOW_P(ctr)) {
op_do_profile(cpu, instruction_pointer(regs), IRQ_ENABLED(regs), i);
CTR_WRITE(oprof_data[cpu].ctr_count[i], real);
CCCR_CLEAR_OVF(low);
CCCR_WRITE(low, high, real);
CTR_WRITE(oprof_data[cpu].ctr_count[i], real);
}
}
apic_write(APIC_LVTPC, apic_read(APIC_LVTPC) & ~APIC_LVT_MASKED);
}
static void ppro_check_ctrs(uint const cpu,
struct op_msrs const * const msrs,
struct pt_regs * const regs)
{
ulong low, high;
int i;
for (i = 0 ; i < NUM_COUNTERS; ++i) {
CTR_READ(low, high, msrs, i);
if (CTR_OVERFLOWED(low)) {
op_do_profile(cpu, instruction_pointer(regs), IRQ_ENABLED(regs), i);
CTR_WRITE(oprof_data[cpu].ctr_count[i], msrs, i);
}
}
}
/**
* Sleep until any of the signals in \a sigs or \a timeout ticks elapse.
* If the timeout elapse a SIG_TIMEOUT is added to the received signal(s).
* \return the signal(s) that have awoken the process.
* \note Caller must check return value to check which signal awoke the process.
*/
sigmask_t sig_waitTimeout(sigmask_t sigs, ticks_t timeout)
{
Timer t;
sigmask_t res;
cpu_flags_t flags;
ASSERT(!sig_check(SIG_TIMEOUT));
ASSERT(!(sigs & SIG_TIMEOUT));
/* IRQ are needed to run timer */
ASSERT(IRQ_ENABLED());
timer_set_event_signal(&t, proc_current(), SIG_TIMEOUT);
timer_setDelay(&t, timeout);
timer_add(&t);
res = sig_wait(SIG_TIMEOUT | sigs);
IRQ_SAVE_DISABLE(flags);
/* Remove timer if sigs occur before timer signal */
if (!(res & SIG_TIMEOUT) && !sig_check(SIG_TIMEOUT))
timer_abort(&t);
IRQ_RESTORE(flags);
return res;
}
