linux/kernel/trace
Linus Torvalds 5b95a50001 Fixes for tracing:
- Check for reader catching up in ring_buffer_map_get_reader()
 
   If the reader catches up to the writer in the memory mapped ring buffer
   then calling rb_get_reader_page() will return NULL as there's no
   pages left. But this isn't checked for before calling rb_get_reader_page()
   and the return of NULL causes a warning.
 
   If it is detected that the reader caught up to the writer, then simply
   exit the routine.
 
 - Fix memory leak in histogram create_field_var()
 
   The couple of the error paths in create_field_var() did not properly clean
   up what was allocated. Make sure everything is freed properly on error.
 
 - Fix help message of tools latency_collector
 
   The help message incorrectly stated that "-t" was the same as "--threads"
   whereas "--threads" is actually represented by "-e".
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Merge tag 'trace-v6.18-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull tracing fixes from Steven Rostedt:

 - Check for reader catching up in ring_buffer_map_get_reader()

   If the reader catches up to the writer in the memory mapped ring
   buffer then calling rb_get_reader_page() will return NULL as there's
   no pages left. But this isn't checked for before calling
   rb_get_reader_page() and the return of NULL causes a warning.

   If it is detected that the reader caught up to the writer, then
   simply exit the routine

 - Fix memory leak in histogram create_field_var()

   The couple of the error paths in create_field_var() did not properly
   clean up what was allocated. Make sure everything is freed properly
   on error

 - Fix help message of tools latency_collector

   The help message incorrectly stated that "-t" was the same as
   "--threads" whereas "--threads" is actually represented by "-e"

* tag 'trace-v6.18-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  tracing/tools: Fix incorrcet short option in usage text for --threads
  tracing: Fix memory leaks in create_field_var()
  ring-buffer: Do not warn in ring_buffer_map_get_reader() when reader catches up
2025-11-07 08:07:11 -08:00
..
rv
Kconfig
Makefile
blktrace.c
bpf_trace.c
bpf_trace.h
error_report-traces.c
fgraph.c
fprobe.c
ftrace.c
ftrace_internal.h
kprobe_event_gen_test.c
pid_list.c
pid_list.h
power-traces.c
preemptirq_delay_test.c
rethook.c
ring_buffer.c
ring_buffer_benchmark.c
rpm-traces.c
synth_event_gen_test.c
trace.c
trace.h
trace_benchmark.c
trace_benchmark.h
trace_boot.c
trace_branch.c
trace_btf.c
trace_btf.h
trace_clock.c
trace_dynevent.c
trace_dynevent.h
trace_entries.h
trace_eprobe.c
trace_event_perf.c
trace_events.c
trace_events_filter.c
trace_events_filter_test.h
trace_events_hist.c
trace_events_inject.c
trace_events_synth.c
trace_events_trigger.c
trace_events_user.c
trace_export.c
trace_fprobe.c
trace_functions.c
trace_functions_graph.c
trace_hwlat.c
trace_irqsoff.c
trace_kdb.c
trace_kprobe.c
trace_kprobe_selftest.c
trace_kprobe_selftest.h
trace_mmiotrace.c
trace_nop.c
trace_osnoise.c
trace_output.c
trace_output.h
trace_preemptirq.c
trace_printk.c
trace_probe.c
trace_probe.h
trace_probe_kernel.h
trace_probe_tmpl.h
trace_recursion_record.c
trace_sched_switch.c
trace_sched_wakeup.c
trace_selftest.c
trace_selftest_dynamic.c
trace_seq.c
trace_stack.c
trace_stat.c
trace_stat.h
trace_synth.h
trace_syscalls.c
trace_uprobe.c
tracing_map.c
tracing_map.h