> For the complete documentation index, see [llms.txt](https://oscourse-tsinghua.gitbook.io/ucore-analysis/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://oscourse-tsinghua.gitbook.io/ucore-analysis/ucore/kern/driver/intr_c.md).

# intr.c

```c
#include <x86.h>
#include <intr.h>

/* intr_enable - enable irq interrupt */
void
intr_enable(void) {
    sti();
}

/* intr_disable - disable irq interrupt */
void
intr_disable(void) {
    cli();
}
```