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linux-stable/kernel/trace
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JaeSang Yoo eb61dbb192 tracing: Fix tp_printk option related with tp_printk_stop_on_boot 
[ Upstream commit 3203ce39ac ]

The kernel parameter "tp_printk_stop_on_boot" starts with "tp_printk" which is
the same as another kernel parameter "tp_printk". If "tp_printk" setup is
called before the "tp_printk_stop_on_boot", it will override the latter
and keep it from being set.

This is similar to other kernel parameter issues, such as:
  Commit 745a600cf1 ("um: console: Ignore console= option")
or init/do_mounts.c:45 (setup function of "ro" kernel param)

Fix it by checking for a "_" right after the "tp_printk" and if that
exists do not process the parameter.

Link: https://lkml.kernel.org/r/20220208195421.969326-1-jsyoo5b@gmail.com

Signed-off-by: JaeSang Yoo <jsyoo5b@gmail.com>
[ Fixed up change log and added space after if condition ]
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-02-23 12:03:19 +01:00
..
blktrace.c blktrace: Fix uaf in blk_trace access after removing by sysfs 2021-09-24 11:06:15 -06:00
bpf_trace.c bpf: Remove config check to enable bpf support for branch records 2022-01-27 11:03:28 +01:00
bpf_trace.h
error_report-traces.c tracing: add error_report_end trace point 2021-02-26 09:41:02 -08:00
fgraph.c tracing: Fix various typos in comments 2021-03-23 14:08:18 -04:00
ftrace.c tracing: Disable "other" permission bits in the tracefs files 2021-11-18 19:16:15 +01:00
ftrace_internal.h
Kconfig tracing: Simplify the Kconfig dependency of FTRACE 2021-08-16 11:37:20 -04:00
kprobe_event_gen_test.c
Makefile tracing: Add a probe that attaches to trace events 2021-08-20 14:18:40 -04:00
power-traces.c
preemptirq_delay_test.c kernel: trace: preemptirq_delay_test: add cpu affinity 2021-02-02 17:02:07 -05:00
ring_buffer.c ring-buffer: Protect ring_buffer_reset() from reentrancy 2021-11-18 19:16:03 +01:00
ring_buffer_benchmark.c
rpm-traces.c
synth_event_gen_test.c tracing: Fix various typos in comments 2021-03-23 14:08:18 -04:00
trace.c tracing: Fix tp_printk option related with tp_printk_stop_on_boot 2022-02-23 12:03:19 +01:00
trace.h tracing: Fix pid filtering when triggers are attached 2021-12-01 09:04:43 +01:00
trace_benchmark.c tracing: Fix some typos in comments 2020-11-10 20:39:40 -05:00
trace_benchmark.h
trace_boot.c tracing: Fix missing trace_boot_init_histograms kstrdup NULL checks 2021-11-18 19:16:41 +01:00
trace_branch.c tracing: Merge irqflags + preempt counter. 2021-02-02 17:02:06 -05:00
trace_clock.c tracing: Do no increment trace_clock_global() by one 2021-06-18 09:10:00 -04:00
trace_dynevent.c tracing: Disable "other" permission bits in the tracefs files 2021-11-18 19:16:15 +01:00
trace_dynevent.h tracing: Add DYNAMIC flag for dynamic events 2021-08-18 18:10:32 -04:00
trace_entries.h trace: Add timerlat tracer 2021-06-25 19:57:24 -04:00
trace_eprobe.c tracing: Fix misspelling of "missing" 2021-10-29 09:54:14 -04:00
trace_event_perf.c ftrace: do CPU checking after preemption disabled 2021-11-18 19:16:20 +01:00
trace_events.c tracing: Check pid filtering when creating events 2021-12-01 09:04:55 +01:00
trace_events_filter.c tracing: Update create_system_filter() kernel-doc comment 2021-03-25 16:04:35 -04:00
trace_events_filter_test.h
trace_events_hist.c tracing: Propagate is_signed to expression 2022-02-16 12:56:08 +01:00
trace_events_inject.c tracing: Merge irqflags + preempt counter. 2021-02-02 17:02:06 -05:00
trace_events_synth.c tracing: Disable "other" permission bits in the tracefs files 2021-11-18 19:16:15 +01:00
trace_events_trigger.c tracing: Add a probe that attaches to trace events 2021-08-20 14:18:40 -04:00
trace_export.c tracing: Fix some typos in comments 2020-11-10 20:39:40 -05:00
trace_functions.c tracing: Add "func_no_repeats" option for function tracing 2021-04-15 14:50:02 -04:00
trace_functions_graph.c tracing: Disable "other" permission bits in the tracefs files 2021-11-18 19:16:15 +01:00
trace_hwlat.c tracing: Disable "other" permission bits in the tracefs files 2021-11-18 19:16:15 +01:00
trace_irqsoff.c tracing: Merge irqflags + preempt counter. 2021-02-02 17:02:06 -05:00
trace_kdb.c kdb: Rename members of struct kdbtab_t 2021-07-27 17:05:06 +01:00
trace_kprobe.c tracing/kprobes: 'nmissed' not showed correctly for kretprobe 2022-01-27 11:05:09 +01:00
trace_kprobe_selftest.c
trace_kprobe_selftest.h
trace_mmiotrace.c tracing: Remove definition of DEBUG in trace_mmiotrace.c 2021-02-02 17:02:07 -05:00
trace_nop.c
trace_osnoise.c tracing/osnoise: Properly unhook events if start_per_cpu_kthreads() fails 2022-01-27 11:05:18 +01:00
trace_output.c tracing: Add migrate-disabled counter to tracing output. 2021-09-03 19:42:35 -04:00
trace_output.h
trace_preemptirq.c
trace_printk.c tracing: Disable "other" permission bits in the tracefs files 2021-11-18 19:16:15 +01:00
trace_probe.c tracing: Add a probe that attaches to trace events 2021-08-20 14:18:40 -04:00
trace_probe.h tracing: Add a probe that attaches to trace events 2021-08-20 14:18:40 -04:00
trace_probe_tmpl.h tracing/probes: Have process_fetch_insn() take a void * instead of pt_regs 2021-08-19 09:09:03 -04:00
trace_recursion_record.c tracing: Disable "other" permission bits in the tracefs files 2021-11-18 19:16:15 +01:00
trace_sched_switch.c
trace_sched_wakeup.c tracing: Change variable type as bool for clean-up 2021-06-30 09:19:14 -04:00
trace_selftest.c tracing: Fix various typos in comments 2021-03-23 14:08:18 -04:00
trace_selftest_dynamic.c
trace_seq.c tracing: Fix various typos in comments 2021-03-23 14:08:18 -04:00
trace_stack.c tracing: Disable "other" permission bits in the tracefs files 2021-11-18 19:16:15 +01:00
trace_stat.c tracing: Disable "other" permission bits in the tracefs files 2021-11-18 19:16:15 +01:00
trace_stat.h
trace_synth.h tracing: synth events: increase max fields count 2021-09-08 15:29:16 -04:00
trace_syscalls.c tracing: Have syscall trace events use trace_event_buffer_lock_reserve() 2022-01-27 11:05:09 +01:00
trace_uprobe.c tracing/uprobe: Fix uprobe_perf_open probes iteration 2021-12-01 09:04:43 +01:00
tracing_map.c tracing: Fix a kmemleak false positive in tracing_map 2021-12-17 10:30:16 +01:00
tracing_map.h tracing: Fix some typos in comments 2020-11-10 20:39:40 -05:00