Steven Rostedt (Red Hat) 0daa230296 tracing: Add tp_printk cmdline to have tracepoints go to printk() ... Add the kernel command line tp_printk option that will have tracepoints that are active sent to printk() as well as to the trace buffer. Passing "tp_printk" will activate this. To turn it off, the sysctl /proc/sys/kernel/tracepoint_printk can have '0' echoed into it. Note, this only works if the cmdline option is used. Echoing 1 into the sysctl file without the cmdline option will have no affect. Note, this is a dangerous option. Having high frequency tracepoints send their data to printk() can possibly cause a live lock. This is another reason why this is only active if the command line option is used. Link: http://lkml.kernel.org/r/alpine.DEB.2.11.1412121539300.16494@nanos Suggested-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>		2014-12-15 10:17:38 -05:00
..
blktrace.c	blktrace/tracing: Use trace_seq_has_overflowed() helper function	2014-11-19 15:25:39 -05:00
ftrace.c	ftrace, kprobes: Support IPMODIFY flag to find IP modify conflict	2014-11-21 14:42:10 -05:00
Kconfig	tracing: Remove function_trace_stop and HAVE_FUNCTION_TRACE_MCOUNT_TEST	2014-07-18 13:58:12 -04:00
Makefile	tracing: Move the trace_seq_* functions into its own trace_seq.c file	2014-07-01 07:13:35 -04:00
power-traces.c	PM / tracing: remove deprecated power trace API	2013-01-26 00:39:12 +01:00
ring_buffer_benchmark.c	sched, cleanup, treewide: Remove set_current_state(TASK_RUNNING) after schedule()	2014-09-19 12:35:17 +02:00
ring_buffer.c	ring-buffer: Remove check of trace_seq_{puts,printf}() return values	2014-11-19 15:25:40 -05:00
rpm-traces.c	PM / Runtime: Introduce trace points for tracing rpm_* functions	2011-09-27 22:53:27 +02:00
trace_benchmark.c	tracing: Only calculate stats of tracepoint benchmarks for 2^32 times	2014-06-06 00:41:38 -04:00
trace_benchmark.h	tracing: Add tracepoint benchmark tracepoint	2014-05-29 22:49:54 -04:00
trace_branch.c	tracing: Have branch tracer use trace_handle_return() helper function	2014-11-19 15:25:41 -05:00
trace_clock.c	tracing: Fix wraparound problems in "uptime" trace clock	2014-07-21 09:56:12 -04:00
trace_entries.h	tracing: Add trace_puts() for even faster trace_printk() tracing	2013-03-15 00:35:55 -04:00
trace_event_perf.c	perf: Check permission only for parent tracepoint event	2014-07-28 10:01:38 +02:00
trace_events_filter_test.h	tracing/filter: Add startup tests for events filter	2011-08-19 14:35:59 -04:00
trace_events_filter.c	tracing: Allow NOT to filter AND and OR clauses	2014-12-03 10:00:27 -05:00
trace_events_trigger.c	trace: Replace single-character seq_puts with seq_putc	2014-11-14 07:55:55 -05:00
trace_events.c	tracing: Add tp_printk cmdline to have tracepoints go to printk()	2014-12-15 10:17:38 -05:00
trace_export.c	tracing: Fix anonymous unions in struct ftrace_event_call	2014-04-09 20:02:55 -04:00
trace_functions_graph.c	tracing: Add additional marks to signal very large time deltas	2014-12-03 17:10:13 -05:00
trace_functions.c	tracing/trivial: Fix typos and make an int into a bool	2014-11-20 10:05:36 -05:00
trace_irqsoff.c	tracing: Allow irq/preempt tracers to be used by instances	2014-04-21 13:59:29 -04:00
trace_kdb.c	tracing: kdb: Fix kernel livelock with empty buffers	2014-11-13 21:27:25 -05:00
trace_kprobe.c	kprobes/tracing: Use trace_seq_has_overflowed() for overflow checks	2014-11-19 15:25:43 -05:00
trace_mmiotrace.c	tracing: Do not check return values of trace_seq_p*() for mmio tracer	2014-11-19 15:25:44 -05:00
trace_nop.c	tracing: Remove mock up poll wait function	2014-04-30 08:40:05 -04:00
trace_output.c	tracing: Add additional marks to signal very large time deltas	2014-12-03 17:10:13 -05:00
trace_output.h	tracing: Add trace_seq_has_overflowed() and trace_handle_return()	2014-11-19 15:25:39 -05:00
trace_printk.c	trace: Replace single-character seq_puts with seq_putc	2014-11-14 07:55:55 -05:00
trace_probe.c	tracing/probes: Do not use return value of trace_seq_printf()	2014-11-19 15:25:44 -05:00
trace_probe.h	kprobes, ftrace: Use NOKPROBE_SYMBOL macro in ftrace	2014-04-24 10:26:39 +02:00
trace_sched_switch.c	tracing: Move tracing_sched_{switch,wakeup}() into wakeup tracer	2014-11-11 12:43:15 -05:00
trace_sched_wakeup.c	tracing: Move tracing_sched_{switch,wakeup}() into wakeup tracer	2014-11-11 12:43:15 -05:00
trace_selftest_dynamic.c	ftrace: Add self-tests for multiple function trace users	2011-05-18 19:24:51 -04:00
trace_selftest.c	Seems that Peter Zijlstra added a new check that is making old	2014-10-12 07:28:55 -04:00
trace_seq.c	tracing: Remove return values of most trace_seq_*() functions	2014-11-19 15:25:47 -05:00
trace_stack.c	sched: Add helper for task stack page overrun checking	2014-09-19 12:35:23 +02:00
trace_stat.c	trace/trace_stat: use rbtree postorder iteration helper instead of opencoding	2013-11-05 16:01:47 -05:00
trace_stat.h
trace_syscalls.c	tracing: Move enabling tracepoints to just after rcu_init()	2014-12-15 10:16:50 -05:00
trace_uprobe.c	tracing: Deletion of an unnecessary check before iput()	2014-11-19 16:28:45 -05:00
trace.c	tracing: Add tp_printk cmdline to have tracepoints go to printk()	2014-12-15 10:17:38 -05:00
trace.h	tracing: Add tp_printk cmdline to have tracepoints go to printk()	2014-12-15 10:17:38 -05:00