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authorSaeed Mahameed <saeedm@mellanox.com>2016-12-06 14:04:05 +0200
committerSaeed Mahameed <saeedm@mellanox.com>2017-02-06 18:20:18 +0200
commitb70149dd7dc98661fbbfe7281f127caa408028fe (patch)
treec821d4619a8acc9e01a2078bed52193bc5e8a2a9 /include/crypto/internal/geniv.h
parenta6f402e4990145252ce4fde59b273fa7e4f91e1b (diff)
net/mlx5e: XDP Tx, no inline copy on ConnectX-5
ConnectX-5 and later HW generations will report min inline mode == MLX5_INLINE_MODE_NONE, which means driver is not required to copy packet headers to inline fields of TX WQE. Avoid copy to inline segment in XDP TX routine when HW inline mode doesn't require it. This will improve CPU utilization and boost XDP TX performance. Tested with xdp2 single flow: CPU: Intel(R) Xeon(R) CPU E5-2680 v3 @ 2.50GHz HCA: Mellanox Technologies MT28800 Family [ConnectX-5 Ex] Before: 7.4Mpps After: 7.8Mpps Improvement: 5% Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Diffstat (limited to 'include/crypto/internal/geniv.h')
0 files changed, 0 insertions, 0 deletions
atch purely papers over the issue by adding a NULL pointer check and a WARN_ON_ONCE() to avoid the oops that would then generally make the machine unresponsive. Other callers of i915_gem_object_to_ggtt() seem to also check for the returned pointer being NULL and warn about it, so this clearly has happened before in other places. [ Reported it originally to the i915 developers on Jan 8, applying the ugly workaround on my own now after triggering the problem for the second time with no feedback. This is likely to be the same bug reported as https://bugs.freedesktop.org/show_bug.cgi?id=98829 https://bugs.freedesktop.org/show_bug.cgi?id=99134 which has a patch for the underlying problem, but it hasn't gotten to me, so I'm applying the workaround. ] Cc: Daniel Vetter <daniel.vetter@intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Imre Deak <imre.deak@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/trace/events/kvm.h')