regs = current_pt_regs();
- hyperv_report_panic(regs);
+ hyperv_report_panic(regs, val);
return NOTIFY_DONE;
}
struct die_args *die = (struct die_args *)args;
struct pt_regs *regs = die->regs;
- hyperv_report_panic(regs);
+ hyperv_report_panic(regs, val);
return NOTIFY_DONE;
}
sprintf(&alias_name[i], "%02x", hv_dev->dev_type.b[i/2]);
}
-static u8 channel_monitor_group(struct vmbus_channel *channel)
+static u8 channel_monitor_group(const struct vmbus_channel *channel)
{
return (u8)channel->offermsg.monitorid / 32;
}
-static u8 channel_monitor_offset(struct vmbus_channel *channel)
+static u8 channel_monitor_offset(const struct vmbus_channel *channel)
{
return (u8)channel->offermsg.monitorid % 32;
}
-static u32 channel_pending(struct vmbus_channel *channel,
- struct hv_monitor_page *monitor_page)
+static u32 channel_pending(const struct vmbus_channel *channel,
+ const struct hv_monitor_page *monitor_page)
{
u8 monitor_group = channel_monitor_group(channel);
+
return monitor_page->trigger_group[monitor_group].pending;
}
-static u32 channel_latency(struct vmbus_channel *channel,
- struct hv_monitor_page *monitor_page)
+static u32 channel_latency(const struct vmbus_channel *channel,
+ const struct hv_monitor_page *monitor_page)
{
u8 monitor_group = channel_monitor_group(channel);
u8 monitor_offset = channel_monitor_offset(channel);
+
return monitor_page->latency[monitor_group][monitor_offset];
}
hdr = (struct vmbus_channel_message_header *)msg->u.payload;
+ trace_vmbus_on_msg_dpc(hdr);
+
if (hdr->msgtype >= CHANNELMSG_COUNT) {
WARN_ONCE(1, "unknown msgtype=%d\n", hdr->msgtype);
goto msg_handled;
if (channel->rescind)
continue;
+ trace_vmbus_chan_sched(channel);
+
+ ++channel->interrupts;
+
switch (channel->callback_mode) {
case HV_CALL_ISR:
vmbus_channel_isr(channel);
}
EXPORT_SYMBOL_GPL(vmbus_driver_unregister);
+
+/*
+ * Called when last reference to channel is gone.
+ */
+static void vmbus_chan_release(struct kobject *kobj)
+{
+ struct vmbus_channel *channel
+ = container_of(kobj, struct vmbus_channel, kobj);
+
+ kfree_rcu(channel, rcu);
+}
+
+struct vmbus_chan_attribute {
+ struct attribute attr;
+ ssize_t (*show)(const struct vmbus_channel *chan, char *buf);
+ ssize_t (*store)(struct vmbus_channel *chan,
+ const char *buf, size_t count);
+};
+#define VMBUS_CHAN_ATTR(_name, _mode, _show, _store) \
+ struct vmbus_chan_attribute chan_attr_##_name \
+ = __ATTR(_name, _mode, _show, _store)
+#define VMBUS_CHAN_ATTR_RW(_name) \
+ struct vmbus_chan_attribute chan_attr_##_name = __ATTR_RW(_name)
+#define VMBUS_CHAN_ATTR_RO(_name) \
+ struct vmbus_chan_attribute chan_attr_##_name = __ATTR_RO(_name)
+#define VMBUS_CHAN_ATTR_WO(_name) \
+ struct vmbus_chan_attribute chan_attr_##_name = __ATTR_WO(_name)
+
+static ssize_t vmbus_chan_attr_show(struct kobject *kobj,
+ struct attribute *attr, char *buf)
+{
+ const struct vmbus_chan_attribute *attribute
+ = container_of(attr, struct vmbus_chan_attribute, attr);
+ const struct vmbus_channel *chan
+ = container_of(kobj, struct vmbus_channel, kobj);
+
+ if (!attribute->show)
+ return -EIO;
+
+ return attribute->show(chan, buf);
+}
+
+static const struct sysfs_ops vmbus_chan_sysfs_ops = {
+ .show = vmbus_chan_attr_show,
+};
+
+static ssize_t out_mask_show(const struct vmbus_channel *channel, char *buf)
+{
+ const struct hv_ring_buffer_info *rbi = &channel->outbound;
+
+ return sprintf(buf, "%u\n", rbi->ring_buffer->interrupt_mask);
+}
+VMBUS_CHAN_ATTR_RO(out_mask);
+
+static ssize_t in_mask_show(const struct vmbus_channel *channel, char *buf)
+{
+ const struct hv_ring_buffer_info *rbi = &channel->inbound;
+
+ return sprintf(buf, "%u\n", rbi->ring_buffer->interrupt_mask);
+}
+VMBUS_CHAN_ATTR_RO(in_mask);
+
+static ssize_t read_avail_show(const struct vmbus_channel *channel, char *buf)
+{
+ const struct hv_ring_buffer_info *rbi = &channel->inbound;
+
+ return sprintf(buf, "%u\n", hv_get_bytes_to_read(rbi));
+}
+VMBUS_CHAN_ATTR_RO(read_avail);
+
+static ssize_t write_avail_show(const struct vmbus_channel *channel, char *buf)
+{
+ const struct hv_ring_buffer_info *rbi = &channel->outbound;
+
+ return sprintf(buf, "%u\n", hv_get_bytes_to_write(rbi));
+}
+VMBUS_CHAN_ATTR_RO(write_avail);
+
+static ssize_t show_target_cpu(const struct vmbus_channel *channel, char *buf)
+{
+ return sprintf(buf, "%u\n", channel->target_cpu);
+}
+VMBUS_CHAN_ATTR(cpu, S_IRUGO, show_target_cpu, NULL);
+
+static ssize_t channel_pending_show(const struct vmbus_channel *channel,
+ char *buf)
+{
+ return sprintf(buf, "%d\n",
+ channel_pending(channel,
+ vmbus_connection.monitor_pages[1]));
+}
+VMBUS_CHAN_ATTR(pending, S_IRUGO, channel_pending_show, NULL);
+
+static ssize_t channel_latency_show(const struct vmbus_channel *channel,
+ char *buf)
+{
+ return sprintf(buf, "%d\n",
+ channel_latency(channel,
+ vmbus_connection.monitor_pages[1]));
+}
+VMBUS_CHAN_ATTR(latency, S_IRUGO, channel_latency_show, NULL);
+
+static ssize_t channel_interrupts_show(const struct vmbus_channel *channel, char *buf)
+{
+ return sprintf(buf, "%llu\n", channel->interrupts);
+}
+VMBUS_CHAN_ATTR(interrupts, S_IRUGO, channel_interrupts_show, NULL);
+
+static ssize_t channel_events_show(const struct vmbus_channel *channel, char *buf)
+{
+ return sprintf(buf, "%llu\n", channel->sig_events);
+}
+VMBUS_CHAN_ATTR(events, S_IRUGO, channel_events_show, NULL);
+
+static struct attribute *vmbus_chan_attrs[] = {
+ &chan_attr_out_mask.attr,
+ &chan_attr_in_mask.attr,
+ &chan_attr_read_avail.attr,
+ &chan_attr_write_avail.attr,
+ &chan_attr_cpu.attr,
+ &chan_attr_pending.attr,
+ &chan_attr_latency.attr,
+ &chan_attr_interrupts.attr,
+ &chan_attr_events.attr,
+ NULL
+};
+
+static struct kobj_type vmbus_chan_ktype = {
+ .sysfs_ops = &vmbus_chan_sysfs_ops,
+ .release = vmbus_chan_release,
+ .default_attrs = vmbus_chan_attrs,
+};
+
+/*
+ * vmbus_add_channel_kobj - setup a sub-directory under device/channels
+ */
+int vmbus_add_channel_kobj(struct hv_device *dev, struct vmbus_channel *channel)
+{
+ struct kobject *kobj = &channel->kobj;
+ u32 relid = channel->offermsg.child_relid;
+ int ret;
+
+ kobj->kset = dev->channels_kset;
+ ret = kobject_init_and_add(kobj, &vmbus_chan_ktype, NULL,
+ "%u", relid);
+ if (ret)
+ return ret;
+
+ kobject_uevent(kobj, KOBJ_ADD);
+
+ return 0;
+}
+
/*
* vmbus_device_create - Creates and registers a new child device
* on the vmbus.
*/
int vmbus_device_register(struct hv_device *child_device_obj)
{
- int ret = 0;
+ struct kobject *kobj = &child_device_obj->device.kobj;
+ int ret;
dev_set_name(&child_device_obj->device, "%pUl",
child_device_obj->channel->offermsg.offer.if_instance.b);
* binding...which will eventually call vmbus_match() and vmbus_probe()
*/
ret = device_register(&child_device_obj->device);
-
- if (ret)
+ if (ret) {
pr_err("Unable to register child device\n");
- else
- pr_debug("child device %s registered\n",
- dev_name(&child_device_obj->device));
+ return ret;
+ }
+
+ child_device_obj->channels_kset = kset_create_and_add("channels",
+ NULL, kobj);
+ if (!child_device_obj->channels_kset) {
+ ret = -ENOMEM;
+ goto err_dev_unregister;
+ }
+
+ ret = vmbus_add_channel_kobj(child_device_obj,
+ child_device_obj->channel);
+ if (ret) {
+ pr_err("Unable to register primary channeln");
+ goto err_kset_unregister;
+ }
+
+ return 0;
+
+err_kset_unregister:
+ kset_unregister(child_device_obj->channels_kset);
+err_dev_unregister:
+ device_unregister(&child_device_obj->device);
return ret;
}
git.samba.org / sfrench / cifs-2.6.git / blobdiff