Oleg Nesterov 4161824f18 uprobes/tracing: Fully initialize uprobe_trace_consumer before uprobe_register() ... probe_event_enable() does uprobe_register() and only after that sets utc->tu and tu->consumer/flags. This can race with uprobe_dispatcher() which can miss these assignments or see them out of order. Nothing really bad can happen, but this doesn't look clean/safe. And this does not allow to use uprobe_consumer->filter() we are going to add, it is called by uprobe_register() and it needs utc->tu. Change this code to initialize everything before uprobe_register(), and reset tu->consumer/flags if it fails. We can't race with event_disable(), the caller holds event_mutex, and if we could the code would be wrong anyway. In fact I think uprobe_trace_consumer should die, it buys nothing but complicates the code. We can simply add uprobe_consumer into trace_uprobe. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>		2013-02-08 18:10:19 +01:00
..
blktrace.c	tracing: Use this_cpu_ptr per-cpu helper	2013-01-21 13:22:30 -05:00
ftrace.c	tracing: Avoid unnecessary multiple recursion checks	2013-01-22 23:38:01 -05:00
Kconfig	tracing: Make a snapshot feature available from userspace	2013-01-30 11:02:06 -05:00
Makefile	trace: Stop compiling in trace_clock unconditionally	2012-09-13 22:52:08 -04:00
power-traces.c	perf: Clean up power events by introducing new, more generic ones	2011-01-04 08:16:54 +01:00
ring_buffer.c	ring-buffer: Add stats field for amount read from trace ring buffer	2013-01-30 11:01:53 -05:00
ring_buffer_benchmark.c	tracing: Use NUMA allocation for per-cpu ring buffer pages	2011-06-14 22:04:39 -04:00
rpm-traces.c	PM / Runtime: Introduce trace points for tracing rpm_* functions	2011-09-27 22:53:27 +02:00
trace.c	tracing: Init current_trace to nop_trace and remove NULL checks	2013-02-01 18:38:47 -05:00
trace.h	tracing: Make a snapshot feature available from userspace	2013-01-30 11:02:06 -05:00
trace_branch.c	tracing: Cache comms only after an event occurred	2012-10-31 16:45:31 -04:00
trace_clock.c	tracing: Use sched_clock_cpu for trace_clock_global	2013-01-30 11:02:05 -05:00
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	perf/core improvements and fixes:	2012-08-21 11:27:00 +02:00
trace_events.c	tracing: Remove the extra 4 bytes of padding in events	2013-01-21 21:05:41 -05:00
trace_events_filter.c	tracing: Replace strict_strto* with kstrto*	2012-10-31 16:45:23 -04:00
trace_events_filter_test.h	tracing/filter: Add startup tests for events filter	2011-08-19 14:35:59 -04:00
trace_export.c	tracing: Do not enable function event with enable	2012-05-10 15:55:43 -04:00
trace_functions.c	tracing: Fix unsigned int compare of zero in recursion check	2013-01-24 07:52:34 -05:00
trace_functions_graph.c	tracing/fgraph: Adjust fgraph depth before calling trace return callback	2013-01-29 17:30:31 -05:00
trace_irqsoff.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2012-12-13 12:00:02 -08:00
trace_kdb.c	kdb,ftdump: Remove reference to internal kdb include	2010-10-22 15:34:11 -05:00
trace_kprobe.c	tracing: Use irq_work for wake ups and remove *_nowake_*() functions	2012-11-02 10:21:52 -04:00
trace_mmiotrace.c	atomic: use <linux/atomic.h>	2011-07-26 16:49:47 -07:00
trace_nop.c
trace_output.c	tracing: Format non-nanosec times from tsc clock without a decimal point.	2012-11-13 15:48:40 -05:00
trace_output.h
trace_printk.c	tracing: Add percpu buffers for trace_printk()	2012-04-23 21:15:55 -04:00
trace_probe.c	tracing: Replace strict_strto* with kstrto*	2012-10-31 16:45:23 -04:00
trace_probe.h	tracing: Provide trace events interface for uprobes	2012-05-07 14:30:17 +02:00
trace_sched_switch.c	tracing: Use irq_work for wake ups and remove *_nowake_*() functions	2012-11-02 10:21:52 -04:00
trace_sched_wakeup.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2012-12-13 12:00:02 -08:00
trace_selftest.c	ftrace: Fix function tracing recursion self test	2013-01-22 23:37:58 -05:00
trace_selftest_dynamic.c	ftrace: Add self-tests for multiple function trace users	2011-05-18 19:24:51 -04:00
trace_stack.c	tracing: Remove unneeded checks from the stack tracer	2012-11-19 15:07:13 -05:00
trace_stat.c
trace_stat.h
trace_syscalls.c	tracing/syscalls: Make local functions static	2013-01-21 13:22:31 -05:00
trace_uprobe.c	uprobes/tracing: Fully initialize uprobe_trace_consumer before uprobe_register()	2013-02-08 18:10:19 +01:00