64 lines
872 B
C
64 lines
872 B
C
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
|
|
#include <sys/kassert.h>
|
|
#include <sys/kdebug.h>
|
|
#include <sys/kconfig.h>
|
|
#include <sys/mp.h>
|
|
#include <sys/spinlock.h>
|
|
|
|
#include <machine/cpu.h>
|
|
#include <machine/cpuop.h>
|
|
|
|
uint32_t lockLevel[MAX_CPUS];
|
|
|
|
void
|
|
Critical_Init()
|
|
{
|
|
int c;
|
|
|
|
for (c = 0; c < MAX_CPUS; c++)
|
|
{
|
|
lockLevel[c] = 0;
|
|
}
|
|
}
|
|
|
|
void
|
|
Critical_Enter()
|
|
{
|
|
if (lockLevel[CPU()] == 0) {
|
|
disable_interrupts();
|
|
}
|
|
lockLevel[CPU()]++;
|
|
}
|
|
|
|
void
|
|
Critical_Exit()
|
|
{
|
|
lockLevel[CPU()]--;
|
|
if (lockLevel[CPU()] == 0)
|
|
{
|
|
enable_interrupts();
|
|
}
|
|
}
|
|
|
|
uint32_t
|
|
Critical_Level()
|
|
{
|
|
return lockLevel[CPU()];
|
|
}
|
|
|
|
static void
|
|
Debug_Critical(int argc, const char *argv[])
|
|
{
|
|
int c;
|
|
|
|
for (c = 0; c < MAX_CPUS; c++) {
|
|
kprintf("CPU%d: %u\n", c, lockLevel[c]);
|
|
}
|
|
}
|
|
|
|
REGISTER_DBGCMD(critical, "Critical Enter/Exit Stats", Debug_Critical);
|
|
|