[PATCH 20/28] Drivers: hv: Get rid of the unused global signaling state

K. Y. Srinivasan
2012-12-01T14:28:53Z

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 <kys@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
---
drivers/hv/hv.c | 24 ------------------------
drivers/hv/hyperv_vmbus.h | 8 --------
2 files changed, 0 insertions(+), 32 deletions(-)

diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c
index 76304a6..e989c6fd 100644
--- a/drivers/hv/hv.c
+++ b/drivers/hv/hv.c
@@ -34,8 +34,6 @@
struct hv_context hv_context = {
.synic_initialized = false,
.hypercall_page = NULL,
- .signal_event_param = NULL,
- .signal_event_buffer = NULL,
};

/*
@@ -170,24 +168,6 @@ int hv_init(void)

hv_context.hypercall_page = virtaddr;

- /* Setup the global signal event param for the signal event hypercall */
- hv_context.signal_event_buffer =
- kmalloc(sizeof(struct hv_input_signal_event_buffer),
- GFP_KERNEL);
- if (!hv_context.signal_event_buffer)
- goto cleanup;
-
- hv_context.signal_event_param =
- (struct hv_input_signal_event *)
- (ALIGN((unsigned long)
- hv_context.signal_event_buffer,
- HV_HYPERCALL_PARAM_ALIGN));
- hv_context.signal_event_param->connectionid.asu32 = 0;
- hv_context.signal_event_param->connectionid.u.id =
- VMBUS_EVENT_CONNECTION_ID;
- hv_context.signal_event_param->flag_number = 0;
- hv_context.signal_event_param->rsvdz = 0;
-
return 0;

cleanup:
@@ -215,10 +195,6 @@ void hv_cleanup(void)
/* Reset our OS id */
wrmsrl(HV_X64_MSR_GUEST_OS_ID, 0);

- kfree(hv_context.signal_event_buffer);
- hv_context.signal_event_buffer = NULL;
- hv_context.signal_event_param = NULL;
-
if (hv_context.hypercall_page) {
hypercall_msr.as_uint64 = 0;
wrmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64);
diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h
index 6bbc197..9135a6f 100644
--- a/drivers/hv/hyperv_vmbus.h
+++ b/drivers/hv/hyperv_vmbus.h
@@ -492,14 +492,6 @@ struct hv_context {

bool synic_initialized;

- /*
- * This is used as an input param to HvCallSignalEvent hypercall. The
- * input param is immutable in our usage and must be dynamic mem (vs
- * stack or global). */
- struct hv_input_signal_event_buffer *signal_event_buffer;
- /* 8-bytes aligned of the buffer above */
- struct hv_input_signal_event *signal_event_param;
-
void *synic_message_page[NR_CPUS];
void *synic_event_page[NR_CPUS];
/*
--
1.7.4.1