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authorJacob Keller <jacob.e.keller@intel.com>2017-02-09 23:44:27 -0800
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2017-02-11 20:39:01 -0800
commita158aeaf5bb5b014240b360693751476aca7440b (patch)
tree82b414a02f951787e649fe165338cf8d62caf74d /net/bridge/br_device.c
parent9b37c937313bf6769d0b018ca35180b379d40862 (diff)
i40e: update comment explaining where FDIR buffers are freed
The original comment implies that the only location where the raw_packet buffer will be freed is in i40e_clean_tx_ring() which is incorrect. In fact this isn't even the normal case. Update the comment explaining where the memory is freed. Change-ID: Ie0defc35ed1c3af183f81fdc60b6d783707a5595 Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'net/bridge/br_device.c')
0 files changed, 0 insertions, 0 deletions
c0 do_cpu_up+0x120/0x150 cpu_subsys_online+0x64/0xe0 device_online+0xb4/0x120 online_store+0xb4/0xc0 dev_attr_store+0x68/0xa0 sysfs_kf_write+0x80/0xb0 kernfs_fop_write+0x17c/0x250 __vfs_write+0x6c/0x1e0 vfs_write+0xd0/0x270 SyS_write+0x6c/0x110 system_call+0x38/0xe0 Examination of the queue showed a 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 'tools/perf/util/annotate.h')