Steven Rostedt 283740c619 tracing: Use same local variable when resetting the ring buffer ... In the ftrace code that resets the ring buffer it references the buffer with a local variable, but then uses the tr->buffer as the parameter to reset. If the wakeup tracer is running, which can switch the tr->buffer with the max saved buffer, this can break the requirement of disabling the buffer before the reset. buffer = tr->buffer; ring_buffer_record_disable(buffer); synchronize_sched(); __tracing_reset(tr->buffer, cpu); If the tr->buffer is swapped, then the reset is not happening to the buffer that was disabled. This will cause the ring buffer to fail. Found with Li Zefan's ftrace_stress_test. Cc: stable@kernel.org Reported-by: Lai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>		2010-03-12 20:29:20 -05:00
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Kconfig	Merge branch 'tracing/core' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing into tracing/core	2010-02-27 10:06:10 +01:00
Makefile	perf events: Remove CONFIG_EVENT_PROFILE	2009-12-28 10:33:06 +01:00
blktrace.c	blktrace: perform cleanup after setup error	2010-02-28 19:47:19 +01:00
ftrace.c	function-graph: Init curr_ret_stack with ret_stack	2010-03-12 20:28:02 -05:00
kmemtrace.c	kmemtrace: Fix up tracer registration	2009-10-01 11:53:44 +02:00
power-traces.c	tracing/power: Remove two exports	2009-12-13 18:37:28 +01:00
ring_buffer.c	ring-buffer: Move disabled check into preempt disable section	2010-03-12 20:26:56 -05:00
ring_buffer_benchmark.c	ring-buffer-benchmark: Add parameters to set produce/consumer priorities	2009-11-25 14:14:15 -05:00
trace.c	tracing: Use same local variable when resetting the ring buffer	2010-03-12 20:29:20 -05:00
trace.h	function-graph: Add tracing_thresh support to function_graph tracer	2010-03-05 21:20:57 -05:00
trace_boot.c	tracing: add filter event logic to special, mmiotrace and boot tracers	2009-09-12 23:34:04 -04:00
trace_branch.c	tracing: Add correct/incorrect to sort keys for branch annotation output	2010-02-09 21:35:05 -05:00
trace_clock.c	tracing: Include irqflags headers from trace clock	2010-02-28 19:45:01 +01:00
trace_entries.h	hw-breakpoints: Rewrite the hw-breakpoints layer on top of perf events	2009-11-08 15:34:42 +01:00
trace_event_profile.c	perf: Factorize trace events raw sample buffer operations	2010-01-29 02:02:57 +01:00
trace_events.c	tracing: Simplify memory recycle of trace_define_field	2010-02-25 10:42:55 -05:00
trace_events_filter.c	Merge branch 'perf/urgent' into perf/core	2010-01-29 10:36:22 +01:00
trace_export.c	tracing: Remove show_format and related macros from TRACE_EVENT	2010-01-06 12:08:46 -05:00
trace_functions.c	tracing: switch function prints from %pf to %ps	2009-09-17 15:53:40 -04:00
trace_functions_graph.c	function-graph: Add tracing_thresh support to function_graph tracer	2010-03-05 21:20:57 -05:00
trace_hw_branches.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2009-12-14 09:58:24 -08:00
trace_irqsoff.c	tracing: Add stack trace to irqsoff tracer	2009-12-11 13:19:51 -05:00
trace_kprobe.c	Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-02-28 10:20:25 -08:00
trace_ksym.c	ksym_tracer: Remove trace_stat	2009-12-30 07:50:50 +01:00
trace_mmiotrace.c	tracing: add filter event logic to special, mmiotrace and boot tracers	2009-09-12 23:34:04 -04:00
trace_nop.c	tracing/ftrace: make nop-tracer use polling wait for events on pipe	2009-03-23 09:22:15 +01:00
trace_output.c	tracing: Add full state to trace_seq	2009-12-09 14:05:49 -05:00
trace_output.h	tracing: consolidate code between trace_output.c and trace_function_graph.c	2009-09-11 14:24:13 -04:00
trace_printk.c	tracing: Remove markers	2009-09-18 21:22:08 +02:00
trace_sched_switch.c	tracing: pass around ring buffer instead of tracer	2009-09-04 18:59:39 -04:00
trace_sched_wakeup.c	locking: Convert __raw_spin* functions to arch_spin*	2009-12-14 23:55:32 +01:00
trace_selftest.c	locking: Convert __raw_spin* functions to arch_spin*	2009-12-14 23:55:32 +01:00
trace_selftest_dynamic.c	ftrace: fix dynamic ftrace selftest	2008-05-23 21:13:23 +02:00
trace_stack.c	tracing: Fix circular dead lock in stack trace	2010-02-02 10:20:18 -05:00
trace_stat.c	trace_stat: Fix missing entry in stat file	2009-08-17 11:25:09 +02:00
trace_stat.h	tracing/stat: Add stat_release() callback	2009-07-10 12:14:05 +02:00
trace_syscalls.c	Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-02-28 10:20:25 -08:00
trace_sysprof.c	perf events, x86/stacktrace: Make stack walking optional	2009-12-17 09:56:19 +01:00
trace_workqueue.c	tracing/workqueues: Add refcnt to struct cpu_workqueue_stats	2009-07-10 12:14:07 +02:00