Steven Rostedt (VMware) dfb6cd1e65 tracing: Fix very unlikely race of registering two stat tracers ... Looking through old emails in my INBOX, I came across a patch from Luis Henriques that attempted to fix a race of two stat tracers registering the same stat trace (extremely unlikely, as this is done in the kernel, and probably doesn't even exist). The submitted patch wasn't quite right as it needed to deal with clean up a bit better (if two stat tracers were the same, it would have the same files). But to make the code cleaner, all we needed to do is to keep the all_stat_sessions_mutex held for most of the registering function. Link: http://lkml.kernel.org/r/1410299375-20068-1-git-send-email-luis.henriques@canonical.com Fixes: 002bb86d8d ("tracing/ftrace: separate events tracing and stats tracing engine") Reported-by: Luis Henriques <luis.henriques@canonical.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>		2020-01-24 17:54:06 -05:00
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blktrace.c	tracing: Make struct ring_buffer less ambiguous	2020-01-13 13:19:38 -05:00
bpf_trace.c	Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-12-03 09:29:50 -08:00
fgraph.c	tracing: Define MCOUNT_INSN_SIZE when not defined without direct calls	2020-01-02 21:56:44 -05:00
ftrace_internal.h	treewide: Rename rcu_dereference_raw_notrace() to _check()	2019-08-01 14:16:21 -07:00
ftrace.c	ftrace: Remove NR_TO_INIT macro	2020-01-21 17:30:39 -05:00
Kconfig	tracing/boot: Add boot-time tracing	2020-01-13 13:19:41 -05:00
Makefile	tracing/boot: Add boot-time tracing	2020-01-13 13:19:41 -05:00
power-traces.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
preemptirq_delay_test.c	preemptirq_delay_test: Add the burst feature and a sysfs trigger	2019-11-13 09:37:28 -05:00
ring_buffer_benchmark.c	tracing: Make struct ring_buffer less ambiguous	2020-01-13 13:19:38 -05:00
ring_buffer.c	ring-buffer: Remove abandoned macro RB_MISSED_FLAGS	2020-01-21 18:38:02 -05:00
rpm-traces.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
trace_benchmark.c	trace: Use pr_warn instead of pr_warning	2019-10-18 15:01:57 +02:00
trace_benchmark.h	tracing: Fix SPDX format headers to use C++ style comments	2018-08-16 19:08:06 -04:00
trace_boot.c	tracing/boot: Fix an IS_ERR() vs NULL bug	2020-01-21 18:41:39 -05:00
trace_branch.c	tracing: Make struct ring_buffer less ambiguous	2020-01-13 13:19:38 -05:00
trace_clock.c	tracing: Add SPDX License format tags to tracing files	2018-08-16 19:08:06 -04:00
trace_dynevent.c	tracing: Add tracing_check_open_get_tr()	2019-10-12 20:44:07 -04:00
trace_dynevent.h	tracing/dynevent: Pass extra arguments to match operation	2019-08-31 12:19:38 -04:00
trace_entries.h	tracing: Change the function format to display function names by perf	2019-02-11 14:53:43 -05:00
trace_event_perf.c	Merge branch 'perf/urgent' into perf/core, to pick up fixes	2019-10-28 12:38:26 +01:00
trace_events_filter_test.h	tracing: Fix SPDX format headers to use C++ style comments	2018-08-16 19:08:06 -04:00
trace_events_filter.c	tracing: Avoid memory leak in process_system_preds()	2019-12-19 18:24:17 -05:00
trace_events_hist.c	tracing: trigger: Replace unneeded RCU-list traversals	2020-01-13 15:59:11 -05:00
trace_events_inject.c	tracing: Initialize val to zero in parse_entry of inject code	2020-01-02 19:04:57 -05:00
trace_events_trigger.c	tracing: trigger: Replace unneeded RCU-list traversals	2020-01-13 15:59:11 -05:00
trace_events.c	tracing: kprobes: Output kprobe event to printk buffer	2020-01-13 13:19:40 -05:00
trace_export.c	tracing: Make internal ftrace events static	2019-11-13 09:37:29 -05:00
trace_functions_graph.c	tracing: Make struct ring_buffer less ambiguous	2020-01-13 13:19:38 -05:00
trace_functions.c	tracing: Rename trace_buffer to array_buffer	2020-01-13 13:19:38 -05:00
trace_hwlat.c	tracing: Make struct ring_buffer less ambiguous	2020-01-13 13:19:38 -05:00
trace_irqsoff.c	tracing: Rename trace_buffer to array_buffer	2020-01-13 13:19:38 -05:00
trace_kdb.c	tracing: Rename trace_buffer to array_buffer	2020-01-13 13:19:38 -05:00
trace_kprobe_selftest.c	selftest/ftrace: Move kprobe selftest function to separate compile unit	2018-07-30 18:41:04 -04:00
trace_kprobe_selftest.h	tracing: Fix SPDX format headers to use C++ style comments	2018-08-16 19:08:06 -04:00
trace_kprobe.c	trace/kprobe: Remove unused MAX_KPROBE_CMDLINE_SIZE	2020-01-22 07:07:38 -05:00
trace_mmiotrace.c	tracing: Make struct ring_buffer less ambiguous	2020-01-13 13:19:38 -05:00
trace_nop.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
trace_output.c	tracing: Rename trace_buffer to array_buffer	2020-01-13 13:19:38 -05:00
trace_output.h	tracing: Fix SPDX format headers to use C++ style comments	2018-08-16 19:08:06 -04:00
trace_preemptirq.c	kprobes: Prohibit probing on hardirq tracers	2019-02-13 08:16:40 +01:00
trace_printk.c	tracing: Add locked_down checks to the open calls of files created for tracefs	2019-10-12 20:48:06 -04:00
trace_probe_tmpl.h	tracing/probe: Support user-space dereference	2019-05-25 23:04:42 -04:00
trace_probe.c	tracing/probe: Fix to check the difference of nr_args before adding probe	2019-09-28 17:07:53 -04:00
trace_probe.h	tracing/probe: Reject exactly same probe event	2019-09-19 11:09:16 -04:00
trace_sched_switch.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
trace_sched_wakeup.c	tracing: Make struct ring_buffer less ambiguous	2020-01-13 13:19:38 -05:00
trace_selftest_dynamic.c	ftrace: Mark function tracer test functions noinline/noclone	2018-01-23 15:57:29 -05:00
trace_selftest.c	tracing: Rename trace_buffer to array_buffer	2020-01-13 13:19:38 -05:00
trace_seq.c	tracing: Remove unused TRACE_SEQ_BUF_USED	2020-01-21 18:39:54 -05:00
trace_stack.c	tracing: Have stack tracer compile when MCOUNT_INSN_SIZE is not defined	2020-01-02 22:04:07 -05:00
trace_stat.c	tracing: Fix very unlikely race of registering two stat tracers	2020-01-24 17:54:06 -05:00
trace_stat.h	tracing: Use generic type for comparator function	2019-11-14 13:15:11 -05:00
trace_syscalls.c	tracing: Make struct ring_buffer less ambiguous	2020-01-13 13:19:38 -05:00
trace_uprobe.c	tracing: Make struct ring_buffer less ambiguous	2020-01-13 13:19:38 -05:00
trace.c	tracing: Fix uninitialized buffer var on early exit to trace_vbprintk()	2020-01-22 06:44:50 -05:00
trace.h	tracing: Make struct ring_buffer less ambiguous	2020-01-13 13:19:38 -05:00
tracing_map.c	tracing: Have the histogram compare functions convert to u64 first	2019-12-19 18:26:00 -05:00
tracing_map.h	tracing: Fix SPDX format headers to use C++ style comments	2018-08-16 19:08:06 -04:00