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: fix context-info when mixed-using blk tracer and trace events
2009-04-16 10:11:01 +02:00
ftrace: use module notifier for function tracer
2009-04-17 16:59:15 +02:00
Merge branch 'linus' into tracing/core
2009-04-14 00:02:22 +02:00
tracing/filters: use ring_buffer_discard_commit() in filter_check_discard()
2009-04-14 00:00:56 +02:00
tracing/events: move the ftrace event tracing code to core
2009-04-14 12:57:59 -04:00
tracing/events/ring-buffer: expose format of ring buffer headers to users
2009-04-17 17:03:28 +02:00
tracing: fix file mode of trace and README
2009-04-17 18:04:36 +02:00
tracing/filters: add filter_mutex to protect filter predicates
2009-04-17 18:28:27 +02:00
tracing: use macros to denote usec and nsec per second
2009-04-07 14:43:06 +02:00
tracing/filters: use ring_buffer_discard_commit() in filter_check_discard()
2009-04-14 00:00:56 +02:00
tracing: fix four sparse warnings
2009-03-22 18:16:54 +01:00
tracing/events: convert event call sites to use a link list
2009-04-14 12:58:00 -04:00
tracing/filters: add TRACE_EVENT_FORMAT_NOFILTER event macro
2009-04-14 00:00:51 +02:00
tracing/filters: add filter_mutex to protect filter predicates
2009-04-17 18:28:27 +02:00
tracing/filters: add filter_mutex to protect filter predicates
2009-04-17 18:28:27 +02:00
tracing/filters: allow on-the-fly filter switching
2009-04-14 00:03:55 +02:00
function-graph: add option to calculate graph time or not
2009-03-24 23:41:11 -04:00
tracing/filters: use ring_buffer_discard_commit() in filter_check_discard()
2009-04-14 00:00:56 +02:00
tracing: use macros to denote usec and nsec per second
2009-04-07 14:43:06 +02:00
tracing/ftrace: make nop-tracer use polling wait for events on pipe
2009-03-23 09:22:15 +01:00
tracing/events: add export symbols for trace events in modules
2009-04-14 12:58:01 -04:00
tracing/events: move declarations from trace directory to core include
2009-04-14 12:57:58 -04:00
tracing/filters: use ring_buffer_discard_commit() in filter_check_discard()
2009-04-14 00:00:56 +02:00
tracing/ftrace: factorize the tracing files creation
2009-04-07 14:43:07 +02:00
tracing/events: move trace point headers into include/trace/events
2009-04-14 22:05:43 -04:00
tracing/events: move trace point headers into include/trace/events
2009-04-14 22:05:43 -04:00
tracing: keep the tracing buffer after self-test failure
2009-03-22 15:17:21 +01:00
tracing/ftrace: factorize the tracing files creation
2009-04-07 14:43:07 +02:00
Merge branch 'linus' into tracing/core
2009-04-07 13:47:45 +02:00
tracing: add handler to trace_stat
2009-03-24 23:22:58 -04:00
tracing/syscalls: use a dedicated file header
2009-04-09 05:43:32 +02:00
tracing/ftrace: factorize the tracing files creation
2009-04-07 14:43:07 +02:00
Merge branch 'linus' into tracing/core
2009-04-07 13:47:45 +02:00
ac1adc55fc