loff_t *off)
{
unsigned long *cpu_tsc;
- static DECLARE_MUTEX(mce_read_sem);
+ static DEFINE_MUTEX(mce_read_mutex);
unsigned next;
char __user *buf = ubuf;
int i, err;
if (!cpu_tsc)
return -ENOMEM;
- down(&mce_read_sem);
+ mutex_lock(&mce_read_mutex);
next = rcu_dereference(mcelog.next);
/* Only supports full reads right now */
if (*off != 0 || usize < MCE_LOG_LEN*sizeof(struct mce)) {
- up(&mce_read_sem);
+ mutex_unlock(&mce_read_mutex);
kfree(cpu_tsc);
return -EINVAL;
}
memset(&mcelog.entry[i], 0, sizeof(struct mce));
}
}
- up(&mce_read_sem);
+ mutex_unlock(&mce_read_mutex);
kfree(cpu_tsc);
return err ? -EFAULT : buf - ubuf;
}