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| author |   Magnus Karlsson <magnus.karlsson@intel.com> | 2019-02-08 14:13:50 +0100 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2019-02-10 20:07:17 -0800 |
| commit | e6762c8bcf982821935a2b1cb33cf8335d0eefae (patch) | |
| tree | fd8e52fbe9a4f960fb15bd9862492628f28ff413 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | bpf: only adjust gso_size on bytestream protocols (diff) | |
| download | wireguard-linux-e6762c8bcf982821935a2b1cb33cf8335d0eefae.tar.xz wireguard-linux-e6762c8bcf982821935a2b1cb33cf8335d0eefae.zip | |
xsk: add missing smp_rmb() in xsk_mmap
All the setup code in AF_XDP is protected by a mutex with the
exception of the mmap code that cannot use it. To make sure that a
process banging on the mmap call at the same time as another process
is setting up the socket, smp_wmb() calls were added in the umem
registration code and the queue creation code, so that the published
structures that xsk_mmap needs would be consistent. However, the
corresponding smp_rmb() calls were not added to the xsk_mmap
code. This patch adds these calls.
Fixes: 37b076933a8e3 ("xsk: add missing write- and data-dependency barrier")
Fixes: c0c77d8fb787c ("xsk: add user memory registration support sockopt")
Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions