Frederic Weisbecker 3e1f60b80c tracing/ftrace: check if debugfs is registered before creating files ... Impact: fix a crash with ftrace={nop,boot} parameter If the nop or initcall tracers are launched as boot tracers, they will attempt to create their option directory and files. But these tracers are registered very early and then assigned as "boot tracers" very early if asked to. Since they do this before debugfs has been registered (core initcall), a crash is triggered. Another early tracers could also come later. So we fix it by checking if debugfs is initialized before creating the root tracing directory. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: Steven Rostedt <rostedt@goodmis.org> LKML-Reference: <1237759847-21025-3-git-send-email-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>		2009-03-23 16:25:47 +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
Kconfig	tracing/syscalls: select kallsysms	2009-03-16 09:13:17 +01:00
kmemtrace.c	tracing: Introduce trace_buffer_{lock_reserve,unlock_commit}	2009-02-06 01:01:41 +01:00
Makefile	ftrace: event profile hooks	2009-03-20 10:17:07 +01:00
ring_buffer.c	tracing/ring-buffer: don't annotate rb_cpu_notify with __cpuinit	2009-03-21 10:54:10 +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	tracing: fix four sparse warnings	2009-03-22 18:16:54 +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_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_events.c	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_graph.c	function-graph: show binary events as comments	2009-03-19 15:58:56 -04:00
trace_functions.c	tracing/core: use appropriate waiting on trace_pipe	2009-02-18 01:40:20 +01:00
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_dynamic.c	ftrace: fix dynamic ftrace selftest	2008-05-23 21:13:23 +02:00
trace_selftest.c	tracing: keep the tracing buffer after self-test failure	2009-03-22 15:17:21 +01:00
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
trace.c	tracing/ftrace: check if debugfs is registered before creating files	2009-03-23 16:25:47 +01:00
trace.h	ftrace: event profile hooks	2009-03-20 10:17:07 +01:00