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| author | Maxim Mikityanskiy <[email protected]> | 2022-01-25 12:52:50 +0200 |
|---|---|---|
| committer | Saeed Mahameed <[email protected]> | 2022-02-14 22:30:49 -0800 |
| commit | 17c84cb46e33fcd682d5d5d6180162374cb24a34 (patch) | |
| tree | c31a09b05f98ebfd7e621debc734c5ef5da229fc /tools/perf/scripts/python/bin/stackcollapse-record | |
| parent | 6ce204eac38723d3a24c7bf148221de933bba54d (diff) | |
net/mlx5e: Sync txq2sq updates with mlx5e_xmit for HTB queues
This commit makes necessary changes to guarantee that txq2sq remains
stable while mlx5e_xmit is running. Proper synchronization is added for
HTB TX queues.
All updates to txq2sq are performed while the corresponding queue is
disabled (i.e. mlx5e_xmit doesn't run on that queue). smp_wmb after each
change guarantees that mlx5e_xmit can see the updated value after the
queue is enabled. Comments explaining this mechanism are added to
mlx5e_xmit.
When an HTB SQ can be deleted (after deleting an HTB node), synchronize
with RCU to wait for mlx5e_select_queue to finish and stop selecting
that queue, before we re-enable it to avoid TX timeout watchdog alarms.
Signed-off-by: Maxim Mikityanskiy <[email protected]>
Reviewed-by: Tariq Toukan <[email protected]>
Signed-off-by: Saeed Mahameed <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/bin/stackcollapse-record')
0 files changed, 0 insertions, 0 deletions