gh0s7/mckernel
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

PAPI support: performance counter's overflow.

Browse Source 
and support mckfd fcntl.
This commit is contained in:
Ken Sato
2016-06-24 13:50:12 +09:00
parent e34322702a
commit dd37443fc7
6 changed files with 170 additions and 73 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
arch/x86/kernel/cpu.c
View File

@ -883,13 +883,36 @@ void handle_interrupt(int vector, struct x86_user_context *regs)
dkprintf("timer[%lu]: CPU_FLAG_NEED_RESCHED \n", rdtsc());
}
else if (vector == LOCAL_PERF_VECTOR) {
struct siginfo info;
unsigned long value;
struct thread *thread = cpu_local_var(current);
struct process *proc = thread->proc;
long irqstate;
struct mckfd *fdp;
lapic_write(LAPIC_LVTPC, LOCAL_PERF_VECTOR);
value = rdmsr(MSR_PERF_GLOBAL_STATUS);
wrmsr(MSR_PERF_GLOBAL_OVF_CTRL, value);
wrmsr(MSR_PERF_GLOBAL_OVF_CTRL, 0);
//TODO: counter overflow signal
//set_signal(0x1d, regs, NULL); // SIGIO
irqstate = ihk_mc_spinlock_lock(&proc->mckfd_lock);
for(fdp = proc->mckfd; fdp; fdp = fdp->next) {
if(fdp->sig_no > 0)
break;
}
ihk_mc_spinlock_unlock(&proc->mckfd_lock, irqstate);
if(fdp) {
memset(&info, '\0', sizeof info);
info.si_signo = fdp->sig_no;
info._sifields._sigfault.si_addr = (void *)regs->gpr.rip;
info._sifields._sigpoll.si_fd = fdp->fd;
set_signal(fdp->sig_no, regs, &info);
}
else {
set_signal(SIGIO, regs, NULL);
}
}
else if (vector >= IHK_TLB_FLUSH_IRQ_VECTOR_START &&
vector < IHK_TLB_FLUSH_IRQ_VECTOR_END) {