Tom Zanussi ac1adc55fc tracing/filters: add filter_mutex to protect filter predicates ...

This patch adds a filter_mutex to prevent the filter predicates from
being accessed concurrently by various external functions.

It's based on a previous patch by Li Zefan:
        "[PATCH 7/7] tracing/filters: make filter preds RCU safe"

v2 changes:

- fixed wrong value returned in a add_subsystem_pred() failure case
  noticed by Li Zefan.

[ Impact: fix trace filter corruption/crashes on parallel access ]

Signed-off-by: Tom Zanussi <tzanussi@gmail.com>
Reviewed-by: Li Zefan <lizf@cn.fujitsu.com>
Tested-by: Li Zefan <lizf@cn.fujitsu.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: paulmck@linux.vnet.ibm.com
LKML-Reference: <1239946028.6639.13.camel@tropicana>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2009-04-17 18:28:27 +02:00

..

blktrace.c

blktrace: fix context-info when mixed-using blk tracer and trace events

2009-04-16 10:11:01 +02:00

ftrace.c

ftrace: use module notifier for function tracer

2009-04-17 16:59:15 +02:00

Kconfig

Merge branch 'linus' into tracing/core

2009-04-14 00:02:22 +02:00

kmemtrace.c

tracing/filters: use ring_buffer_discard_commit() in filter_check_discard()

2009-04-14 00:00:56 +02:00

Makefile

tracing/events: move the ftrace event tracing code to core

2009-04-14 12:57:59 -04:00

ring_buffer.c

tracing/events/ring-buffer: expose format of ring buffer headers to users

2009-04-17 17:03:28 +02:00

trace_boot.c

tracing: use macros to denote usec and nsec per second

2009-04-07 14:43:06 +02:00

trace_branch.c

tracing/filters: use ring_buffer_discard_commit() in filter_check_discard()

2009-04-14 00:00:56 +02:00

trace_clock.c

tracing: fix four sparse warnings

2009-03-22 18:16:54 +01:00

trace_event_profile.c

tracing/events: convert event call sites to use a link list

2009-04-14 12:58:00 -04:00

trace_event_types.h

tracing/filters: add TRACE_EVENT_FORMAT_NOFILTER event macro

2009-04-14 00:00:51 +02:00

trace_events_filter.c

tracing/filters: add filter_mutex to protect filter predicates

2009-04-17 18:28:27 +02:00

trace_events.c

tracing/filters: add filter_mutex to protect filter predicates

2009-04-17 18:28:27 +02:00

trace_export.c

tracing/filters: allow on-the-fly filter switching

2009-04-14 00:03:55 +02:00

trace_functions_graph.c

function-graph: add option to calculate graph time or not

2009-03-24 23:41:11 -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/filters: use ring_buffer_discard_commit() in filter_check_discard()

2009-04-14 00:00:56 +02:00

trace_irqsoff.c

tracing: have latency tracers set the latency format

2009-03-04 22:15:30 -05:00

trace_mmiotrace.c

tracing: use macros to denote usec and nsec per second

2009-04-07 14:43:06 +02:00

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/events: add export symbols for trace events in modules

2009-04-14 12:58:01 -04:00

trace_output.h

tracing/events: move declarations from trace directory to core include

2009-04-14 12:57:58 -04:00

trace_power.c

tracing/filters: use ring_buffer_discard_commit() in filter_check_discard()

2009-04-14 00:00:56 +02:00

trace_printk.c

tracing/ftrace: factorize the tracing files creation

2009-04-07 14:43:07 +02:00

trace_sched_switch.c

tracing/events: move trace point headers into include/trace/events

2009-04-14 22:05:43 -04:00

trace_sched_wakeup.c

tracing/events: move trace point headers into include/trace/events

2009-04-14 22:05:43 -04:00

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/ftrace: factorize the tracing files creation

2009-04-07 14:43:07 +02:00

trace_stat.c

Merge branch 'linus' into tracing/core

2009-04-07 13:47:45 +02:00

trace_stat.h

tracing: add handler to trace_stat

2009-03-24 23:22:58 -04:00

trace_syscalls.c

tracing/syscalls: use a dedicated file header

2009-04-09 05:43:32 +02:00

trace_sysprof.c

tracing/ftrace: factorize the tracing files creation

2009-04-07 14:43:07 +02:00

trace_workqueue.c

Merge branch 'linus' into tracing/core

2009-04-07 13:47:45 +02:00

trace.c

tracing: fix file mode of trace and README

2009-04-17 18:04:36 +02:00

trace.h

tracing/filters: add filter_mutex to protect filter predicates

2009-04-17 18:28:27 +02:00