Jason Xing 7f2173894f blktrace: use rbuf->stats.full as a drop indicator in relayfs ...

Replace internal subbuf_start in blktrace with the default policy in
relayfs.

Remove dropped field from struct blktrace.  Correspondingly, call the
common helper in relay.  By incrementing full_count to keep track of how
many times we encountered a full buffer issue, user space will know how
many events were lost.

Link: https://lkml.kernel.org/r/20250612061201.34272-5-kerneljasonxing@gmail.com
Signed-off-by: Jason Xing <kernelxing@tencent.com>
Reviewed-by: Yushan Zhou <katrinzhou@tencent.com>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

2025-07-09 22:57:52 -07:00

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rv

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blktrace.c

blktrace: use rbuf->stats.full as a drop indicator in relayfs

2025-07-09 22:57:52 -07:00

bpf_trace.c

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bpf_trace.h

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error_report-traces.c

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fgraph.c

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fprobe.c

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ftrace_internal.h

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ftrace.c

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Kconfig

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kprobe_event_gen_test.c

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Makefile

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pid_list.c

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pid_list.h

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power-traces.c

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preemptirq_delay_test.c

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rethook.c

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ring_buffer_benchmark.c

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ring_buffer.c

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rpm-traces.c

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synth_event_gen_test.c

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trace_benchmark.c

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trace_benchmark.h

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trace_boot.c

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trace_branch.c

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trace_btf.c

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trace_btf.h

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trace_clock.c

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trace_dynevent.c

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trace_dynevent.h

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trace_entries.h

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trace_eprobe.c

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trace_event_perf.c

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trace_events_filter_test.h

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trace_events_filter.c

tracing: Fix filter logic error

2025-06-27 15:51:36 -04:00

trace_events_hist.c

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trace_events_inject.c

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trace_events_synth.c

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trace_events_trigger.c

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trace_events_user.c

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trace_events.c

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trace_export.c

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trace_fprobe.c

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trace_functions_graph.c

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trace_functions.c

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trace_hwlat.c

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trace_irqsoff.c

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trace_kdb.c

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trace_kprobe_selftest.c

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trace_kprobe_selftest.h

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trace_kprobe.c

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trace_mmiotrace.c

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trace_nop.c

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trace_osnoise.c

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trace_output.c

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trace_output.h

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trace_preemptirq.c

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trace_printk.c

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trace_probe_kernel.h

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trace_probe_tmpl.h

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trace_probe.c

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trace_probe.h

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trace_recursion_record.c

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trace_sched_switch.c

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trace_sched_wakeup.c

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trace_selftest_dynamic.c

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trace_selftest.c

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trace_seq.c

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trace_stack.c

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trace_stat.c

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trace_stat.h

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trace_synth.h

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trace_syscalls.c

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trace_uprobe.c

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trace.c

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trace.h

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tracing_map.c

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tracing_map.h

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