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| author | Stefano Stabellini <sstabellini@kernel.org> | 2017-10-30 15:40:59 -0700 |
|---|---|---|
| committer | Boris Ostrovsky <boris.ostrovsky@oracle.com> | 2017-10-31 09:05:53 -0400 |
| commit | 45ddce214a797de65c0418bebf90c1b564c3ee3d (patch) | |
| tree | 0052d1e964d166a212d461ffba2e020d8398a2e5 /drivers/sh | |
| parent | 9774c6cca26610d065a75d2ac8c5e3fcf0a209b3 (diff) | |
| download | blackbird-obmc-linux-45ddce214a797de65c0418bebf90c1b564c3ee3d.tar.gz blackbird-obmc-linux-45ddce214a797de65c0418bebf90c1b564c3ee3d.zip | |
xen/pvcalls: implement sendmsg
Send data to an active socket by copying data to the "out" ring. Take
the active socket out_mutex so that only one function can access the
ring at any given time.
If not enough room is available on the ring, rather than returning
immediately or sleep-waiting, spin for up to 5000 cycles. This small
optimization turns out to improve performance significantly.
Signed-off-by: Stefano Stabellini <stefano@aporeto.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
CC: boris.ostrovsky@oracle.com
CC: jgross@suse.com
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Diffstat (limited to 'drivers/sh')
0 files changed, 0 insertions, 0 deletions
