linux

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Files

Jesper Dangaard Brouer ff2998f29f net: sched: introduce qdisc-specific drop reason tracing

Create new enum qdisc_drop_reason and trace_qdisc_drop tracepoint
for qdisc layer drop diagnostics with direct qdisc context visibility.

The new tracepoint includes qdisc handle, parent, kind (name), and
device information. Existing SKB_DROP_REASON_QDISC_DROP is retained
for backwards compatibility via kfree_skb_reason().

Convert qdiscs with drop reasons to use the new infrastructure.

Change CAKE's cobalt_should_drop() return type from enum skb_drop_reason
to enum qdisc_drop_reason to fix implicit enum conversion warnings.
Use QDISC_DROP_UNSPEC as the 'not dropped' sentinel instead of
SKB_NOT_DROPPED_YET. Both have the same compiled value (0), so the
comparison logic remains semantically equivalent.

Signed-off-by: Jesper Dangaard Brouer <hawk@kernel.org>
Reviewed-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://patch.msgid.link/177211345275.3011628.1974310302645218067.stgit@firesoul
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

2026-02-28 15:31:34 -08:00

events

net: sched: introduce qdisc-specific drop reason tracing

2026-02-28 15:31:34 -08:00

misc

NFSD: Remove NFSERR_EAGAIN

2026-01-02 13:43:41 -05:00

stages

tracing: Add bitmask-list option for human-readable bitmask display

2026-01-26 17:00:50 -05:00

bpf_probe.h

tracepoint: Have tracepoints created with DECLARE_TRACE() have _tp suffix