51 lines
716 B
C
51 lines
716 B
C
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#include <stdbool.h>
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#include <stdint.h>
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#include <sys/kassert.h>
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#include <sys/kdebug.h>
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#include <sys/kconfig.h>
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#include <sys/mp.h>
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#include <sys/spinlock.h>
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#include <machine/amd64.h>
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#include <machine/amd64op.h>
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uint32_t lockLevel[MAX_CPUS];
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void
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Critical_Init()
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{
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int c;
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for (c = 0; c < MAX_CPUS; c++)
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{
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lockLevel[c] = 0;
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}
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}
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void
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Critical_Enter()
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{
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disable_interrupts();
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lockLevel[CPU()]++;
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}
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void
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Critical_Exit()
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{
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lockLevel[CPU()]--;
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if (lockLevel[CPU()] == 0)
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{
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enable_interrupts();
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}
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}
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void
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Debug_Critical(int argc, const char *argv[])
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{
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kprintf("CPU0: %u\n", lockLevel[0]);
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}
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REGISTER_DBGCMD(critical, "Critical Enter/Exit Stats", Debug_Critical);
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