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| author | Cong Wang <xiyou.wangcong@gmail.com> | 2025-04-04 00:10:25 +0300 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2025-04-08 11:57:49 +0300 |
| commit | 51eb3b65544c9efd6a1026889ee5fb5aa62da3bb (patch) | |
| tree | 93874653876710c552ec3b71e35b4986e94636b5 /tools/perf/util/scripting-engines/trace-event-python.c | |
| parent | df008598b3a00be02a8051fde89ca0fbc416bd55 (diff) | |
| download | linux-51eb3b65544c9efd6a1026889ee5fb5aa62da3bb.tar.xz | |
sch_hfsc: make hfsc_qlen_notify() idempotent
hfsc_qlen_notify() is not idempotent either and not friendly
to its callers, like fq_codel_dequeue(). Let's make it idempotent
to ease qdisc_tree_reduce_backlog() callers' life:
1. update_vf() decreases cl->cl_nactive, so we can check whether it is
non-zero before calling it.
2. eltree_remove() always removes RB node cl->el_node, but we can use
RB_EMPTY_NODE() + RB_CLEAR_NODE() to make it safe.
Reported-by: Gerrard Tai <gerrard.tai@starlabs.sg>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250403211033.166059-4-xiyou.wangcong@gmail.com
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-python.c')
0 files changed, 0 insertions, 0 deletions