linux-toradex.git/drivers/hv/hyperv_vmbus.h, branch v3.12-rc2

drivers: hv: allocate synic structures before hv_synic_init()

2013-06-24T23:24:17+00:00

We currently allocate synic structures in hv_sync_init(), but there's no way for
the driver to know about the allocation failure and it may continue to use the
uninitialized pointers. Solve this by introducing helpers for allocating and
freeing and doing the allocation before the on_each_cpu() call in
vmbus_bus_init().

Cc: Haiyang Zhang 
Signed-off-by: Jason Wang 
Signed-off-by: K. Y. Srinivasan 
Signed-off-by: Greg Kroah-Hartman

Drivers: hv: Capture the host build information

2013-01-17T19:41:49+00:00

Capture the host build information so it can be presented along with the
negotiated vmbus version information.

Signed-off-by: K. Y. Srinivasan 
Reviewed-by: Haiyang Zhang 
Signed-off-by: Greg Kroah-Hartman

Drivers: hv: Implement flow management on the send side

2013-01-17T19:41:49+00:00

Implement flow management on the send side. When the sender is blocked, the reader
can potentially signal the sender to indicate there is now room to send.

Signed-off-by: K. Y. Srinivasan 
Reviewed-by: Haiyang Zhang 
Signed-off-by: Greg Kroah-Hartman

Drivers: hv: Manage event tasklets on per-cpu basis

2013-01-17T19:39:15+00:00

Now that we can potentially take vmbus interrupts on any CPU, make the
tasklets per-CPU.

Signed-off-by: K. Y. Srinivasan 
Reviewed-by: Haiyang Zhang 
Signed-off-by: Greg Kroah-Hartman

Drivers: hv: Get rid of the unused global signaling state

2013-01-17T19:39:15+00:00

Now that we have implemented a per-connection signaling mechanism, get rid
of the global signaling state. For hosts that don't support per-connection
signaling handle, we have moved the global state to be a per-channel state.

Signed-off-by: K. Y. Srinivasan 
Reviewed-by: Haiyang Zhang 
Signed-off-by: Greg Kroah-Hartman

Drivers: hv: Setup a mapping for Hyper-V's notion cpu ID

2013-01-17T19:34:37+00:00

On win8 (ws2012), incoming vmbus interrupt load can be spread across all
available VCPUs in the guest. On a per-channel basis, the interrupts can
be bound to specific CPUs. The Linux notion of cpu ID may be different
from that of the hypervisor's. Setup a mapping structure.

Signed-off-by: K. Y. Srinivasan 
Reviewed-by: Haiyang Zhang 
Signed-off-by: Greg Kroah-Hartman

Drivers: hv: Manage signaling state on a per-connection basis

2013-01-17T19:34:37+00:00

The current code has a global handle for supporting signaling of the host
from guest. Make this a per-channel attribute as on some versions of the
host we can signal on per-channel handle.

Signed-off-by: K. Y. Srinivasan 
Reviewed-by: Haiyang Zhang 
Signed-off-by: Greg Kroah-Hartman

Drivers: hv: Change the signature of vmbus_set_event()

2013-01-17T19:34:36+00:00

In preparation for supporting a per-connection signaling mechanism,
change the signature of vmbus_set_event(). This change is also
needed to implement other aspects of the signaling optimization.

Signed-off-by: K. Y. Srinivasan 
Reviewed-by: Haiyang Zhang 
Signed-off-by: Greg Kroah-Hartman

Drivers: hv: Change the signature for hv_signal_event()

2013-01-17T19:34:36+00:00

In preparation for implementing a per-connection signaling framework,
change the signature of the function hv_signal_event(). The current
code uses a global handle for signaling the host.

Signed-off-by: K. Y. Srinivasan 
Reviewed-by: Haiyang Zhang 
Signed-off-by: Greg Kroah-Hartman

Drivers: hv: Get rid of hv_get_ringbuffer_interrupt_mask()

2013-01-17T18:46:39+00:00

This function is no longer used; get rid of it.

Signed-off-by: K. Y. Srinivasan 
Reviewed-by: Haiyang Zhang 
Signed-off-by: Greg Kroah-Hartman