Steven Rostedt (Red Hat) 7b7cf9fa6d tracing: Prevent buffer overwrite disabled for latency tracers ... commit 613f04a0f5 upstream. The latency tracers require the buffers to be in overwrite mode, otherwise they get screwed up. Force the buffers to stay in overwrite mode when latency tracers are enabled. Added a flag_changed() method to the tracer structure to allow the tracers to see what flags are being changed, and also be able to prevent the change from happing. [Backported for 3.4-stable. Re-added current_trace NULL checks; removed allocated_snapshot field; adapted to tracing_trace_options_write without trace_set_options.] Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Lingzhu Xiang <lxiang@redhat.com> Reviewed-by: CAI Qian <caiqian@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2013-04-05 10:04:37 -07:00
..
blktrace.c	simple_open: automatically convert to simple_open()	2012-04-05 15:25:50 -07:00
ftrace.c	tracing: Fix free of probe entry by calling call_rcu_sched()	2013-03-28 12:12:06 -07:00
Kconfig	ftrace: Update the kconfig for DYNAMIC_FTRACE	2013-03-14 11:29:51 -07:00
Makefile	Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2011-10-26 17:03:38 +02:00
power-traces.c	perf: Clean up power events by introducing new, more generic ones	2011-01-04 08:16:54 +01:00
ring_buffer_benchmark.c	tracing: Use NUMA allocation for per-cpu ring buffer pages	2011-06-14 22:04:39 -04:00
ring_buffer.c	ring-buffer: Fix race between integrity check and readers	2013-01-17 08:50:51 -08:00
rpm-traces.c	PM / Runtime: Introduce trace points for tracing rpm_* functions	2011-09-27 22:53:27 +02:00
trace_branch.c	tracing: Allow events to share their print functions	2010-05-14 14:20:32 -04:00
trace_clock.c	tracing: Add a counter clock for those that do not trust clocks	2011-09-19 11:35:58 -04:00
trace_entries.h	Merge branch 'tip/perf/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace into perf/urgent	2012-03-24 08:19:09 +01:00
trace_event_perf.c	ftrace, perf: Add filter support for function trace event	2012-02-21 11:08:30 -05:00
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	ftrace, perf: Add filter support for function trace event	2012-02-21 11:08:30 -05:00
trace_events.c	tracing: Do not enable function event with enable	2012-05-10 15:55:43 -04:00
trace_export.c	tracing: Do not enable function event with enable	2012-05-10 15:55:43 -04:00
trace_functions_graph.c	tracing: Still trace filtered irq functions when irq trace is disabled	2011-07-07 22:26:27 -04:00
trace_functions.c	ftrace: Fix regression of :mod:module function enabling	2011-07-07 11:30:08 -04:00
trace_irqsoff.c	tracing: Prevent buffer overwrite disabled for latency tracers	2013-04-05 10:04:37 -07:00
trace_kdb.c	kdb,ftdump: Remove reference to internal kdb include	2010-10-22 15:34:11 -05:00
trace_kprobe.c	ftrace, perf: Add add/del tracepoint perf registration actions	2012-02-21 11:08:25 -05:00
trace_mmiotrace.c	atomic: use <linux/atomic.h>	2011-07-26 16:49:47 -07:00
trace_nop.c
trace_output.c	tracing: Fix stacktrace of latency tracers (irqsoff and friends)	2012-04-19 17:00:13 -04:00
trace_output.h	tracing: Allow events to share their print functions	2010-05-14 14:20:32 -04:00
trace_printk.c	tracing: Clean up tb_fmt to not give faulty compile warning	2011-08-10 20:36:32 -04:00
trace_sched_switch.c	tracing: Remove obsolete sched_switch tracer	2011-02-08 17:14:56 -05:00
trace_sched_wakeup.c	tracing: Prevent buffer overwrite disabled for latency tracers	2013-04-05 10:04:37 -07:00
trace_selftest_dynamic.c	ftrace: Add self-tests for multiple function trace users	2011-05-18 19:24:51 -04:00
trace_selftest.c	ftrace: Add self-tests for multiple function trace users	2011-05-18 19:24:51 -04:00
trace_stack.c	tracing: Have stack tracing set filtered functions at boot	2011-12-21 07:26:49 -05:00
trace_stat.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
trace_stat.h
trace_syscalls.c	ftrace, perf: Add add/del tracepoint perf registration actions	2012-02-21 11:08:25 -05:00
trace_workqueue.c	jump label: Initialize workqueue tracepoints *before* they are registered	2010-09-22 16:30:03 -04:00
trace.c	tracing: Prevent buffer overwrite disabled for latency tracers	2013-04-05 10:04:37 -07:00
trace.h	tracing: Prevent buffer overwrite disabled for latency tracers	2013-04-05 10:04:37 -07:00