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| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2015-12-15 03:01:58 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-12-15 03:27:30 (GMT) |
| commit | 45870a441361d1c05a5f767c4ece2f6e30e0da9c (patch) | |
| tree | c1ecd2367a64b575dcb5eba1630219dc847e1ea8 /include/linux/hyperv.h | |
| parent | 822f18d4d3e9d4efb4996bbe562d0f99ab82d7dd (diff) | |
| download | linux-45870a441361d1c05a5f767c4ece2f6e30e0da9c.tar.xz | |
Drivers: hv: ring_buffer: remove stray smp_read_barrier_depends()
smp_read_barrier_depends() does nothing on almost all arcitectures
including x86 and having it in the beginning of
hv_get_ringbuffer_availbytes() does not provide any guarantees anyway.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/hyperv.h')
| -rw-r--r-- | include/linux/hyperv.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index acd995b..179ff33 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -141,8 +141,6 @@ hv_get_ringbuffer_availbytes(struct hv_ring_buffer_info *rbi, { u32 read_loc, write_loc, dsize; - smp_read_barrier_depends(); - /* Capture the read/write indices before they changed */ read_loc = rbi->ring_buffer->read_index; write_loc = rbi->ring_buffer->write_index; |