diff options
Diffstat (limited to 'drivers/xen/mcelog.c')
| -rw-r--r-- | drivers/xen/mcelog.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/drivers/xen/mcelog.c b/drivers/xen/mcelog.c index 72e87d2f1929..804aa3c181c2 100644 --- a/drivers/xen/mcelog.c +++ b/drivers/xen/mcelog.c @@ -55,7 +55,7 @@ static struct mc_info g_mi; static struct mcinfo_logical_cpu *g_physinfo; static uint32_t ncpus; -static DEFINE_SPINLOCK(mcelog_lock); +static DEFINE_MUTEX(mcelog_lock); static struct xen_mce_log xen_mcelog = { .signature = XEN_MCE_LOG_SIGNATURE, @@ -106,7 +106,7 @@ static ssize_t xen_mce_chrdev_read(struct file *filp, char __user *ubuf, unsigned num; int i, err; - spin_lock(&mcelog_lock); + mutex_lock(&mcelog_lock); num = xen_mcelog.next; @@ -130,7 +130,7 @@ static ssize_t xen_mce_chrdev_read(struct file *filp, char __user *ubuf, err = -EFAULT; out: - spin_unlock(&mcelog_lock); + mutex_unlock(&mcelog_lock); return err ? err : buf - ubuf; } @@ -310,12 +310,11 @@ static int mc_queue_handle(uint32_t flags) } /* virq handler for machine check error info*/ -static irqreturn_t xen_mce_interrupt(int irq, void *dev_id) +static void xen_mce_work_fn(struct work_struct *work) { int err; - unsigned long tmp; - spin_lock_irqsave(&mcelog_lock, tmp); + mutex_lock(&mcelog_lock); /* urgent mc_info */ err = mc_queue_handle(XEN_MC_URGENT); @@ -330,8 +329,13 @@ static irqreturn_t xen_mce_interrupt(int irq, void *dev_id) pr_err(XEN_MCELOG "Failed to handle nonurgent mc_info queue.\n"); - spin_unlock_irqrestore(&mcelog_lock, tmp); + mutex_unlock(&mcelog_lock); +} +static DECLARE_WORK(xen_mce_work, xen_mce_work_fn); +static irqreturn_t xen_mce_interrupt(int irq, void *dev_id) +{ + schedule_work(&xen_mce_work); return IRQ_HANDLED; } |