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SMP - CPU local idle stub

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- each CPU has its own pseudo idle process and its structure

- idle cycles accounting is agregated when exporting to userspace
This commit is contained in:
Tomas Hruby
2010-09-15 14:10:21 +00:00
parent fac5fbfdbf
commit 865e21b884
4 changed files with 65 additions and 4 deletions
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14
kernel/system/do_getinfo.c
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@@ -17,6 +17,19 @@
#if USE_GETINFO
#include <minix/u64.h>
PRIVATE void update_idle_time(void)
{
int i;
struct proc * idl = proc_addr(IDLE);
for (i = 0; i < CONFIG_MAX_CPUS ; i++) {
idl->p_cycles = add64(idl->p_cycles,
get_cpu_var(i, idle_proc).p_cycles);
}
}
/*===========================================================================*
* do_getinfo *
*===========================================================================*/
@@ -64,6 +77,7 @@ PUBLIC int do_getinfo(struct proc * caller, message * m_ptr)
break;
}
case GET_PROCTAB: {
update_idle_time();
length = sizeof(struct proc) * (NR_PROCS + NR_TASKS);
src_vir = (vir_bytes) proc;
break;