Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Steven Rostedt (Red Hat) 6224beb12e tracing: Have branch tracer use recursive field of task struct ... Fengguang Wu's tests triggered a bug in the branch tracer's start up test when CONFIG_DEBUG_PREEMPT set. This was because that config adds some debug logic in the per cpu field, which calls back into the branch tracer. The branch tracer has its own recursive checks, but uses a per cpu variable to implement it. If retrieving the per cpu variable calls back into the branch tracer, you can see how things will break. Instead of using a per cpu variable, use the trace_recursion field of the current task struct. Simply set a bit when entering the branch tracing and clear it when leaving. If the bit is set on entry, just don't do the tracing. There's also the case with lockdep, as the local_irq_save() called before the recursion can also trigger code that can call back into the function. Changing that to a raw_local_irq_save() will protect that as well. This prevents the recursion and the inevitable crash that follows. Link: http://lkml.kernel.org/r/20150630141803.GA28071@wfg-t540p.sh.intel.com Cc: stable@vger.kernel.org # 3.10+ Reported-by: Fengguang Wu <fengguang.wu@intel.com> Tested-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>		2015-07-08 11:53:45 -04:00
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blktrace.c	This patch series contains several clean ups and even a new trace clock	2015-06-26 14:02:43 -07:00
bpf_trace.c	bpf: let kprobe programs use bpf_get_smp_processor_id() helper	2015-06-15 15:53:50 -07:00
ftrace.c	Some clean ups and small fixes, but the biggest change is the addition	2015-04-14 10:49:03 -07:00
Kconfig	Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-04-14 14:37:47 -07:00
Makefile	bpf: Fix the build on BPF_SYSCALL=y && !CONFIG_TRACING kernels, make it more configurable	2015-04-02 16:28:06 +02:00
power-traces.c	PM / sleep: export suspend_resume trace event	2015-01-30 02:10:41 +01:00
ring_buffer.c	ring-buffer: Add enum names for the context levels	2015-05-29 10:39:08 -04:00
ring_buffer_benchmark.c	This patch series contains several clean ups and even a new trace clock	2015-06-26 14:02:43 -07:00
rpm-traces.c
trace.c	tracing: Rename FTRACE_EVENT_FL_* flags to EVENT_FILE_FL_*	2015-05-13 15:24:57 -04:00
trace.h	tracing: Have branch tracer use recursive field of task struct	2015-07-08 11:53:45 -04:00
trace_benchmark.c
trace_benchmark.h
trace_branch.c	tracing: Have branch tracer use recursive field of task struct	2015-07-08 11:53:45 -04:00
trace_clock.c	tracing: Export tracing clock functions	2015-05-12 15:56:57 -04:00
trace_entries.h	tracing: %pF is only for function pointers	2015-03-25 08:57:22 -04:00
trace_event_perf.c	tracing: Rename ftrace_event_{call,class} to trace_event_{call,class}	2015-05-13 14:06:10 -04:00
trace_events.c	tracing: Rename FTRACE_EVENT_FL_* flags to EVENT_FILE_FL_*	2015-05-13 15:24:57 -04:00
trace_events_filter.c	This patch series contains several clean ups and even a new trace clock	2015-06-26 14:02:43 -07:00
trace_events_filter_test.h
trace_events_trigger.c	tracing: Rename ftrace_raw_##call event structures to trace_event_raw_##call	2015-05-13 21:48:40 -04:00
trace_export.c	tracing: Rename ftrace_event_{call,class} to trace_event_{call,class}	2015-05-13 14:06:10 -04:00
trace_functions.c	tracing/trivial: Fix typos and make an int into a bool	2014-11-20 10:05:36 -05:00
trace_functions_graph.c	tracing: Rename ftrace_event_{call,class} to trace_event_{call,class}	2015-05-13 14:06:10 -04:00
trace_irqsoff.c	tracing: Remove unneeded includes of debugfs.h and fs.h	2015-01-22 11:19:48 -05:00
trace_kdb.c	KGDB/KDB fixes and cleanups	2015-01-09 20:51:10 -08:00
trace_kprobe.c	tracing: Rename ftrace_trigger_soft_disabled() to trace_trigger_soft_disabled()	2015-05-13 15:25:39 -04:00
trace_mmiotrace.c	tracing: Rename ftrace_event_{call,class} to trace_event_{call,class}	2015-05-13 14:06:10 -04:00
trace_nop.c	tracing: Remove unneeded includes of debugfs.h and fs.h	2015-01-22 11:19:48 -05:00
trace_output.c	tracing: Rename ftrace_event_name() to trace_event_name()	2015-05-13 14:20:14 -04:00
trace_output.h	tracing: Rename (un)register_ftrace_event() to (un)register_trace_event()	2015-05-13 14:05:14 -04:00
trace_printk.c	tracing: Use IS_ERR() check for return value of tracing_init_dentry()	2015-01-22 11:19:49 -05:00
trace_probe.c	trace: Don't use __weak in header files	2015-03-25 08:57:23 -04:00
trace_probe.h	tracing: Rename ftrace_event_{call,class} to trace_event_{call,class}	2015-05-13 14:06:10 -04:00
trace_sched_switch.c	tracing: Remove unneeded includes of debugfs.h and fs.h	2015-01-22 11:19:48 -05:00
trace_sched_wakeup.c	tracing: Rename ftrace_event_{call,class} to trace_event_{call,class}	2015-05-13 14:06:10 -04:00
trace_selftest.c
trace_selftest_dynamic.c
trace_seq.c	tracing: use %*pb[l] to print bitmaps including cpumasks and nodemasks	2015-02-13 21:21:37 -08:00
trace_stack.c	tracing: remove use of seq_printf return value	2015-04-15 16:35:25 -07:00
trace_stat.c	tracing: Convert the tracing facility over to use tracefs	2015-02-03 12:48:41 -05:00
trace_stat.h
trace_syscalls.c	tracing: Rename ftrace_trigger_soft_disabled() to trace_trigger_soft_disabled()	2015-05-13 15:25:39 -04:00
trace_uprobe.c	tracing: Rename ftrace_trigger_soft_disabled() to trace_trigger_soft_disabled()	2015-05-13 15:25:39 -04:00