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authorEric Dumazet <edumazet@google.com>2017-02-02 16:26:39 -0800
committerDavid S. Miller <davem@davemloft.net>2017-02-03 17:17:52 -0500
commit3ffc1af576550ec61d35668485954e49da29d168 (patch)
treed967a7eeb9749af496605f6436e35a0e6efacaa0 /net/bluetooth/hci_sysfs.c
parent52e01b84a244473074fc0612c169e2e043d58b01 (diff)
ixgbe: get rid of custom busy polling code
In linux-4.5, busy polling was implemented in core NAPI stack, meaning that all custom implementation can be removed from drivers. Not only we remove lot's of code, we also remove one lock operation in fast path, and allow GRO to do its job. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Acked-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bluetooth/hci_sysfs.c')
0 files changed, 0 insertions, 0 deletions
single reference (no PERCPU_COUNT_BIAS, and __PERCPU_REF_DEAD, __PERCPU_REF_ATOMIC set) and no requests. However, conditions at the time of the race are count of PERCPU_COUNT_BIAS + 0 and __PERCPU_REF_DEAD and __PERCPU_REF_ATOMIC set. The fix is to make the tryget routines use an actual boolean internally instead of the atomic long result truncated to a int. Fixes: e625305b3907 percpu-refcount: make percpu_ref based on longs instead of ints Link: https://bugzilla.kernel.org/show_bug.cgi?id=190751 Signed-off-by: Douglas Miller <dougmill@linux.vnet.ibm.com> Reviewed-by: Jens Axboe <axboe@fb.com> Signed-off-by: Tejun Heo <tj@kernel.org> Fixes: e625305b3907 ("percpu-refcount: make percpu_ref based on longs instead of ints") Cc: stable@vger.kernel.org # v3.18+
Diffstat (limited to 'net/sunrpc/xprtrdma/svc_rdma_backchannel.c')