summaryrefslogtreecommitdiff
path: root/include/linux/hyperv.h
diff options
context:
space:
mode:
authorAndrea Parri (Microsoft) <parri.andrea@gmail.com>2022-04-19 15:23:24 +0300
committerWei Liu <wei.liu@kernel.org>2022-04-25 18:51:13 +0300
commitb91eaf7267cf7aec0a4e087decf7770dfb694d78 (patch)
tree2d765372e172cc792be1e0c0ec024a644226222d /include/linux/hyperv.h
parent0aadb6a7bb811554cf39318b5d18e8ec50dd9f02 (diff)
downloadlinux-b91eaf7267cf7aec0a4e087decf7770dfb694d78.tar.xz
Drivers: hv: vmbus: Introduce {lock,unlock}_requestor()
To abtract the lock and unlock operations on the requestor spin lock. The helpers will come in handy in hv_pci. No functional change. Suggested-by: Michael Kelley <mikelley@microsoft.com> Signed-off-by: Andrea Parri (Microsoft) <parri.andrea@gmail.com> Reviewed-by: Michael Kelley <mikelley@microsoft.com> Link: https://lore.kernel.org/r/20220419122325.10078-6-parri.andrea@gmail.com Signed-off-by: Wei Liu <wei.liu@kernel.org>
Diffstat (limited to 'include/linux/hyperv.h')
-rw-r--r--include/linux/hyperv.h15
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
index 2e4962a2fbec..460a716f4748 100644
--- a/include/linux/hyperv.h
+++ b/include/linux/hyperv.h
@@ -1042,6 +1042,21 @@ struct vmbus_channel {
u32 max_pkt_size;
};
+#define lock_requestor(channel, flags) \
+do { \
+ struct vmbus_requestor *rqstor = &(channel)->requestor; \
+ \
+ spin_lock_irqsave(&rqstor->req_lock, flags); \
+} while (0)
+
+static __always_inline void unlock_requestor(struct vmbus_channel *channel,
+ unsigned long flags)
+{
+ struct vmbus_requestor *rqstor = &channel->requestor;
+
+ spin_unlock_irqrestore(&rqstor->req_lock, flags);
+}
+
u64 vmbus_next_request_id(struct vmbus_channel *channel, u64 rqst_addr);
u64 __vmbus_request_addr_match(struct vmbus_channel *channel, u64 trans_id,
u64 rqst_addr);