[lttv.git] / trunk / markers-test / cachectl.c

#include <linux/kernel.h>
#include <linux/module.h>

int init_module()
{
  unsigned tmp;
    
  /* Disable cache */
    
  asm volatile ("movl  %%cr0, %0\n\t"
                "orl   $0x40000000, %0\n\t"
                "wbinvd\n\t"
                "movl  %0, %%cr0\n\t"
                "wbinvd\n\t"
                : "=r" (tmp) : : "memory");

  return 0;
}

void cleanup_module()
{
  unsigned tmp;

  asm volatile ("movl  %%cr0, %0\n\t"
                "andl   $0xbfffffff, %0\n\t"
                "wbinvd\n\t"
                "movl  %0, %%cr0\n\t"
                "wbinvd\n\t"
                : "=r" (tmp) : : "memory");
}
Commit	Line	Data
d511c84b	1	#include <linux/kernel.h>
	2	#include <linux/module.h>
	3
	4	int init_module()
	5	{
	6	unsigned tmp;
	7
	8	/* Disable cache */
	9
	10	asm volatile ("movl %%cr0, %0\n\t"
	11	"orl $0x40000000, %0\n\t"
	12	"wbinvd\n\t"
	13	"movl %0, %%cr0\n\t"
	14	"wbinvd\n\t"
	15	: "=r" (tmp) : : "memory");
	16
	17	return 0;
	18	}
	19
	20	void cleanup_module()
	21	{
	22	unsigned tmp;
	23
	24	asm volatile ("movl %%cr0, %0\n\t"
	25	"andl $0xbfffffff, %0\n\t"
	26	"wbinvd\n\t"
	27	"movl %0, %%cr0\n\t"
	28	"wbinvd\n\t"
	29	: "=r" (tmp) : : "memory");
	30	}