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Frederic Weisbecker cf586b61f8 tracing/function-graph-tracer: prevent hangs during self-tests ... Impact: detect tracing related hangs Sometimes, with some configs, the function graph tracer can make the timer interrupt too much slow, hanging the kernel in an endless loop of timer interrupts servicing. As suggested by Ingo, this patch brings a watchdog which stops the selftest after a defined number of functions traced, definitely disabling this tracer. For those who want to debug the cause of the function graph trace hang, you can pass the ftrace_dump_on_oops kernel parameter to dump the traces after this hang detection. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> LKML-Reference: <1237694675-23509-1-git-send-email-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>		2009-03-22 14:06:40 +01:00
..
Kconfig	tracing/syscalls: select kallsysms	2009-03-16 09:13:17 +01:00
Makefile	ftrace: event profile hooks	2009-03-20 10:17:07 +01:00
blktrace.c	tracing: protect reader of cmdline output	2009-03-16 23:27:06 -04:00
events.c	ftrace: event profile hooks	2009-03-20 10:17:07 +01:00
ftrace.c	tracing/ftrace: fix the check on nopped sites	2009-03-16 22:15:36 -04:00
kmemtrace.c	tracing: Introduce trace_buffer_{lock_reserve,unlock_commit}	2009-02-06 01:01:41 +01:00
ring_buffer.c	tracing/ring-buffer: fix non cpu hotplug case	2009-03-19 16:41:08 +01:00
trace.c	tracing/function-graph-tracer: prevent hangs during self-tests	2009-03-22 14:06:40 +01:00
trace.h	ftrace: event profile hooks	2009-03-20 10:17:07 +01:00
trace_boot.c	tracing: Introduce trace_buffer_{lock_reserve,unlock_commit}	2009-02-06 01:01:41 +01:00
trace_branch.c	tracing: remove funky whitespace in the trace code	2009-03-10 14:13:14 -04:00
trace_clock.c	trace_clock: fix preemption bug	2009-03-10 20:03:01 +01:00
trace_event_profile.c	ftrace: event profile hooks	2009-03-20 10:17:07 +01:00
trace_event_types.h	tracing: remove recording function depth from trace_printk	2009-03-19 15:58:47 -04:00
trace_events.c	ftrace: event profile hooks	2009-03-20 10:17:07 +01:00
trace_events_stage_1.h	tracing: update comments to match event code macros	2009-03-10 13:12:58 -04:00
trace_events_stage_2.h	tracing: show event name in trace for TRACE_EVENT created events	2009-03-12 22:00:19 -04:00
trace_events_stage_3.h	ftrace: event profile hooks	2009-03-20 10:17:07 +01:00
trace_export.c	tracing: remove funky whitespace in the trace code	2009-03-10 14:13:14 -04:00
trace_functions.c	tracing/core: use appropriate waiting on trace_pipe	2009-02-18 01:40:20 +01:00
trace_functions_graph.c	function-graph: show binary events as comments	2009-03-19 15:58:56 -04:00
trace_hw_branches.c	tracing/hw-branch-tracing: convert bts-tracer mutex to a spinlock	2009-02-25 09:16:01 +01:00
trace_irqsoff.c	tracing: have latency tracers set the latency format	2009-03-04 22:15:30 -05:00
trace_mmiotrace.c	tracing: remove recording function depth from trace_printk	2009-03-19 15:58:47 -04:00
trace_nop.c	trace: Call tracing_reset_online_cpus before tracer->init()	2009-02-06 01:01:41 +01:00
trace_output.c	ftrace: ensure every event gets an id	2009-03-20 10:17:06 +01:00
trace_output.h	tracing: make print_(b)printk_msg_only global	2009-03-19 15:57:55 -04:00
trace_power.c	tracing: make power tracer start/stop methods lighter weight	2009-03-17 23:12:11 -04:00
trace_printk.c	tracing: remove recording function depth from trace_printk	2009-03-19 15:58:47 -04:00
trace_sched_switch.c	tracing: make sched_switch stop/start light weight	2009-03-17 23:10:45 -04:00
trace_sched_wakeup.c	tracing: have latency tracers set the latency format	2009-03-04 22:15:30 -05:00
trace_selftest.c	tracing/function-graph-tracer: prevent hangs during self-tests	2009-03-22 14:06:40 +01:00
trace_selftest_dynamic.c	ftrace: fix dynamic ftrace selftest	2008-05-23 21:13:23 +02:00
trace_stack.c	tracing: left align location header in stack_trace	2009-03-13 00:00:58 -04:00
trace_stat.c	tracing: fix typing mistake in hint message and comments	2009-02-17 12:38:24 -05:00
trace_stat.h	tracing/ftrace: separate events tracing and stats tracing engine	2009-01-14 12:11:37 +01:00
trace_syscalls.c	tracing/syscalls: protect thread flag toggling from races	2009-03-16 09:13:16 +01:00
trace_sysprof.c	tracing: make all file_operations const	2009-03-05 21:46:40 -05:00
trace_workqueue.c	tracing: Don't use tracing_record_cmdline() in workqueue tracer fix	2009-03-12 21:23:47 -04:00