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| author | Saurabh Sengar <ssengar@linux.microsoft.com> | 2024-03-30 01:51:57 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-04-11 14:55:53 +0200 |
| commit | e8c4bd6c6e6b7e7b416c42806981c2a81370001e (patch) | |
| tree | 3dd3fdd1ac0cab7040d84db5a1341bbe72d16fc6 /drivers/hv/hyperv_vmbus.h | |
| parent | a36b69775fcaab42262f6dbf288ccb6d470158ae (diff) | |
| download | lwn-e8c4bd6c6e6b7e7b416c42806981c2a81370001e.tar.gz lwn-e8c4bd6c6e6b7e7b416c42806981c2a81370001e.zip | |
Drivers: hv: vmbus: Add utility function for querying ring size
Add a function to query for the preferred ring buffer size of VMBus
device. This will allow the drivers (eg. UIO) to allocate the most
optimized ring buffer size for devices.
Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Reviewed-by: Long Li <longli@microsoft.com>
Link: https://lore.kernel.org/r/1711788723-8593-2-git-send-email-ssengar@linux.microsoft.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hv/hyperv_vmbus.h')
| -rw-r--r-- | drivers/hv/hyperv_vmbus.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h index f6b1e710f805..76ac5185a01a 100644 --- a/drivers/hv/hyperv_vmbus.h +++ b/drivers/hv/hyperv_vmbus.h @@ -417,6 +417,11 @@ static inline bool hv_is_perf_channel(struct vmbus_channel *channel) return vmbus_devs[channel->device_id].perf_device; } +static inline size_t hv_dev_ring_size(struct vmbus_channel *channel) +{ + return vmbus_devs[channel->device_id].pref_ring_size; +} + static inline bool hv_is_allocated_cpu(unsigned int cpu) { struct vmbus_channel *channel, *sc; |