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| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2016-09-02 14:58:20 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-09-02 17:22:51 +0200 |
| commit | 9988ce685676cebe0b14dc128f00e1ae9cd1a4fa (patch) | |
| tree | 5f7e2212bca74c839e686068b74ca3b3dec5d739 /net/dsa | |
| parent | Drivers: hv: cleanup vmbus_open() for wrap around mappings (diff) | |
| download | linux-9988ce685676cebe0b14dc128f00e1ae9cd1a4fa.tar.xz linux-9988ce685676cebe0b14dc128f00e1ae9cd1a4fa.zip | |
Drivers: hv: ring_buffer: wrap around mappings for ring buffers
Make it possible to always use a single memcpy() or to provide a direct
link to a packet on the ring buffer by creating virtual mapping for two
copies of the ring buffer with vmap(). Utilize currently empty
hv_ringbuffer_cleanup() to do the unmap.
While on it, replace sizeof(struct hv_ring_buffer) check
in hv_ringbuffer_init() with BUILD_BUG_ON() as it is a compile time check.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Tested-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/dsa')
0 files changed, 0 insertions, 0 deletions