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authorStephen Hemminger <stephen@networkplumber.org>2017-03-05 04:27:18 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-03-17 09:10:49 +0300
commit4827ee1dca5691c9fc568883170a568db94f9b38 (patch)
tree96f7e3d7511c8a6c8ebfbce933e3488366b074a2 /drivers/hv
parent2a9d7de2038e87bb2a1085ac73c4246c260263f0 (diff)
downloadlinux-4827ee1dca5691c9fc568883170a568db94f9b38.tar.xz
vmbus: expose debug info for drivers
Allow driver to get debug information about state of the ring. Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hv')
-rw-r--r--drivers/hv/hyperv_vmbus.h11
-rw-r--r--drivers/hv/ring_buffer.c1
2 files changed, 1 insertions, 11 deletions
diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h
index a69b52de8d56..6113e915c50e 100644
--- a/drivers/hv/hyperv_vmbus.h
+++ b/drivers/hv/hyperv_vmbus.h
@@ -248,14 +248,6 @@ struct hv_context {
extern struct hv_context hv_context;
-struct hv_ring_buffer_debug_info {
- u32 current_interrupt_mask;
- u32 current_read_index;
- u32 current_write_index;
- u32 bytes_avail_toread;
- u32 bytes_avail_towrite;
-};
-
/* Hv Interface */
extern int hv_init(void);
@@ -289,9 +281,6 @@ int hv_ringbuffer_read(struct vmbus_channel *channel,
void *buffer, u32 buflen, u32 *buffer_actual_len,
u64 *requestid, bool raw);
-void hv_ringbuffer_get_debuginfo(const struct hv_ring_buffer_info *ring_info,
- struct hv_ring_buffer_debug_info *debug_info);
-
/*
* Maximum channels is determined by the size of the interrupt page
* which is PAGE_SIZE. 1/2 of PAGE_SIZE is for send endpoint interrupt
diff --git a/drivers/hv/ring_buffer.c b/drivers/hv/ring_buffer.c
index 8a249740b4b4..cfacca566e3f 100644
--- a/drivers/hv/ring_buffer.c
+++ b/drivers/hv/ring_buffer.c
@@ -206,6 +206,7 @@ void hv_ringbuffer_get_debuginfo(const struct hv_ring_buffer_info *ring_info,
ring_info->ring_buffer->interrupt_mask;
}
}
+EXPORT_SYMBOL_GPL(hv_ringbuffer_get_debuginfo);
/* Initialize the ring buffer. */
int hv_ringbuffer_init(struct hv_ring_buffer_info *ring_info,