Messages in this thread | | | Date | Tue, 17 Apr 2007 19:01:26 +0200 | From | John Sigler <> | Subject | Re: Disabling x86 System Management Mode |
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John Sigler wrote:
> static int hello_init(void) > { > int i; > int *lat; > printk(KERN_ALERT "INIT\n"); > lat = kmalloc(MAX * sizeof *lat, GFP_KERNEL); > if (lat == NULL) return -1; > for (i=0; i < MAX; ++i) lat[i] = 0; > for (i=0; i < 5; ++i) foo(); > for (i=0; i < N; ++i) > { > unsigned count, res; > set_current_state(TASK_INTERRUPTIBLE); > schedule_timeout(1); > foo(); > local_irq_disable(); > count = foo(); > local_irq_enable(); > res = count >> 8; > if (res < MAX) ++lat[res]; else printk(KERN_ALERT "OUT OF RANGE\n"); > } > > for (i=0; i < MAX; ++i) > if (lat[i] != 0) printk(KERN_ALERT "%d %d\n", i<<8, lat[i]);
kfree(lat);
> return 0; > }
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