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-rw-r--r--drivers/hv/hv.c3
-rw-r--r--drivers/hv/hv_utils_transport.c6
-rw-r--r--drivers/hv/ring_buffer.c23
-rw-r--r--drivers/hv/vmbus_drv.c40
4 files changed, 54 insertions, 18 deletions
diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c
index 8267439dd1ee..fe96aab9e794 100644
--- a/drivers/hv/hv.c
+++ b/drivers/hv/hv.c
@@ -49,9 +49,6 @@ struct hv_context hv_context = {
*/
int hv_init(void)
{
- if (!hv_is_hypercall_page_setup())
- return -ENOTSUPP;
-
hv_context.cpu_context = alloc_percpu(struct hv_per_cpu_context);
if (!hv_context.cpu_context)
return -ENOMEM;
diff --git a/drivers/hv/hv_utils_transport.c b/drivers/hv/hv_utils_transport.c
index 4402a71e23f7..832777527936 100644
--- a/drivers/hv/hv_utils_transport.c
+++ b/drivers/hv/hv_utils_transport.c
@@ -104,7 +104,7 @@ static ssize_t hvt_op_write(struct file *file, const char __user *buf,
return ret ? ret : count;
}
-static unsigned int hvt_op_poll(struct file *file, poll_table *wait)
+static __poll_t hvt_op_poll(struct file *file, poll_table *wait)
{
struct hvutil_transport *hvt;
@@ -113,10 +113,10 @@ static unsigned int hvt_op_poll(struct file *file, poll_table *wait)
poll_wait(file, &hvt->outmsg_q, wait);
if (hvt->mode == HVUTIL_TRANSPORT_DESTROY)
- return POLLERR | POLLHUP;
+ return EPOLLERR | EPOLLHUP;
if (hvt->outmsg_len > 0)
- return POLLIN | POLLRDNORM;
+ return EPOLLIN | EPOLLRDNORM;
return 0;
}
diff --git a/drivers/hv/ring_buffer.c b/drivers/hv/ring_buffer.c
index 12eb8caa4263..50e071444a5c 100644
--- a/drivers/hv/ring_buffer.c
+++ b/drivers/hv/ring_buffer.c
@@ -140,6 +140,29 @@ static u32 hv_copyto_ringbuffer(
return start_write_offset;
}
+/*
+ *
+ * hv_get_ringbuffer_availbytes()
+ *
+ * Get number of bytes available to read and to write to
+ * for the specified ring buffer
+ */
+static void
+hv_get_ringbuffer_availbytes(const struct hv_ring_buffer_info *rbi,
+ u32 *read, u32 *write)
+{
+ u32 read_loc, write_loc, dsize;
+
+ /* Capture the read/write indices before they changed */
+ read_loc = READ_ONCE(rbi->ring_buffer->read_index);
+ write_loc = READ_ONCE(rbi->ring_buffer->write_index);
+ dsize = rbi->ring_datasize;
+
+ *write = write_loc >= read_loc ? dsize - (write_loc - read_loc) :
+ read_loc - write_loc;
+ *read = dsize - *write;
+}
+
/* Get various debug metrics for the specified ring buffer. */
void hv_ringbuffer_get_debuginfo(const struct hv_ring_buffer_info *ring_info,
struct hv_ring_buffer_debug_info *debug_info)
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
index 610223f0e945..bc65c4d79c1f 100644
--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -37,7 +37,6 @@
#include <linux/sched/task_stack.h>
#include <asm/hyperv.h>
-#include <asm/hypervisor.h>
#include <asm/mshyperv.h>
#include <linux/notifier.h>
#include <linux/ptrace.h>
@@ -1053,7 +1052,7 @@ static int vmbus_bus_init(void)
* Initialize the per-cpu interrupt state and
* connect to the host.
*/
- ret = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "x86/hyperv:online",
+ ret = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "hyperv/vmbus:online",
hv_synic_init, hv_synic_cleanup);
if (ret < 0)
goto err_alloc;
@@ -1193,7 +1192,7 @@ static ssize_t out_mask_show(const struct vmbus_channel *channel, char *buf)
return sprintf(buf, "%u\n", rbi->ring_buffer->interrupt_mask);
}
-VMBUS_CHAN_ATTR_RO(out_mask);
+static VMBUS_CHAN_ATTR_RO(out_mask);
static ssize_t in_mask_show(const struct vmbus_channel *channel, char *buf)
{
@@ -1201,7 +1200,7 @@ static ssize_t in_mask_show(const struct vmbus_channel *channel, char *buf)
return sprintf(buf, "%u\n", rbi->ring_buffer->interrupt_mask);
}
-VMBUS_CHAN_ATTR_RO(in_mask);
+static VMBUS_CHAN_ATTR_RO(in_mask);
static ssize_t read_avail_show(const struct vmbus_channel *channel, char *buf)
{
@@ -1209,7 +1208,7 @@ static ssize_t read_avail_show(const struct vmbus_channel *channel, char *buf)
return sprintf(buf, "%u\n", hv_get_bytes_to_read(rbi));
}
-VMBUS_CHAN_ATTR_RO(read_avail);
+static VMBUS_CHAN_ATTR_RO(read_avail);
static ssize_t write_avail_show(const struct vmbus_channel *channel, char *buf)
{
@@ -1217,13 +1216,13 @@ static ssize_t write_avail_show(const struct vmbus_channel *channel, char *buf)
return sprintf(buf, "%u\n", hv_get_bytes_to_write(rbi));
}
-VMBUS_CHAN_ATTR_RO(write_avail);
+static 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 VMBUS_CHAN_ATTR(cpu, S_IRUGO, show_target_cpu, NULL);
static ssize_t channel_pending_show(const struct vmbus_channel *channel,
char *buf)
@@ -1232,7 +1231,7 @@ static ssize_t channel_pending_show(const struct vmbus_channel *channel,
channel_pending(channel,
vmbus_connection.monitor_pages[1]));
}
-VMBUS_CHAN_ATTR(pending, S_IRUGO, channel_pending_show, NULL);
+static VMBUS_CHAN_ATTR(pending, S_IRUGO, channel_pending_show, NULL);
static ssize_t channel_latency_show(const struct vmbus_channel *channel,
char *buf)
@@ -1241,19 +1240,34 @@ static ssize_t channel_latency_show(const struct vmbus_channel *channel,
channel_latency(channel,
vmbus_connection.monitor_pages[1]));
}
-VMBUS_CHAN_ATTR(latency, S_IRUGO, channel_latency_show, NULL);
+static 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 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 VMBUS_CHAN_ATTR(events, S_IRUGO, channel_events_show, NULL);
+
+static ssize_t subchannel_monitor_id_show(const struct vmbus_channel *channel,
+ char *buf)
+{
+ return sprintf(buf, "%u\n", channel->offermsg.monitorid);
+}
+static VMBUS_CHAN_ATTR(monitor_id, S_IRUGO, subchannel_monitor_id_show, NULL);
+
+static ssize_t subchannel_id_show(const struct vmbus_channel *channel,
+ char *buf)
+{
+ return sprintf(buf, "%u\n",
+ channel->offermsg.offer.sub_channel_index);
+}
+static VMBUS_CHAN_ATTR_RO(subchannel_id);
static struct attribute *vmbus_chan_attrs[] = {
&chan_attr_out_mask.attr,
@@ -1265,6 +1279,8 @@ static struct attribute *vmbus_chan_attrs[] = {
&chan_attr_latency.attr,
&chan_attr_interrupts.attr,
&chan_attr_events.attr,
+ &chan_attr_monitor_id.attr,
+ &chan_attr_subchannel_id.attr,
NULL
};
@@ -1717,7 +1733,7 @@ static int __init hv_acpi_init(void)
{
int ret, t;
- if (x86_hyper_type != X86_HYPER_MS_HYPERV)
+ if (!hv_is_hyperv_initialized())
return -ENODEV;
init_completion(&probe_event);
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-12 01:30:00 +0300