Yonghong Song 07c41a295c bpf: avoid rcu_dereference inside bpf_event_mutex lock region ... During perf event attaching/detaching bpf programs, the tp_event->prog_array change is protected by the bpf_event_mutex lock in both attaching and deteching functions. Although tp_event->prog_array is a rcu pointer, rcu_derefrence is not needed to access it since mutex lock will guarantee ordering. Verified through "make C=2" that sparse locking check still happy with the new change. Also change the label name in perf_event_{attach,detach}_bpf_prog from "out" to "unlock" to reflect the code action after the label. Signed-off-by: Yonghong Song <yhs@fb.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2017-11-01 12:35:48 +09:00
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blktrace.c	blktrace: Fix potential deadlock between delete & sysfs ops	2017-09-25 08:56:05 -06:00
bpf_trace.c	bpf: avoid rcu_dereference inside bpf_event_mutex lock region	2017-11-01 12:35:48 +09:00
ftrace.c	ftrace: Fix kmemleak in unregister_ftrace_graph	2017-10-03 10:27:32 -04:00
Kconfig	tracing: Rename update the enum_map file	2017-06-13 17:13:06 -04:00
Makefile	perf/core: Rename CONFIG_[UK]PROBE_EVENT to CONFIG_[UK]PROBE_EVENTS	2017-03-01 10:26:39 +01:00
power-traces.c	cpufreq: schedutil: New governor based on scheduler utilization data	2016-04-02 01:09:12 +02:00
ring_buffer_benchmark.c	ring-buffer: Have ring_buffer_alloc_read_page() return error on offline CPU	2017-08-02 14:23:02 -04:00
ring_buffer.c	ring-buffer: Have ring_buffer_alloc_read_page() return error on offline CPU	2017-08-02 14:23:02 -04:00
rpm-traces.c
trace_benchmark.c	tracing: Have the trace_event benchmark thread call cond_resched_rcu_qs()	2017-04-17 15:21:19 -04:00
trace_benchmark.h	tracing: Have the reg function allow to fail	2016-12-09 09:13:30 -05:00
trace_branch.c	tracing: Add the constant count for branch tracer	2017-01-19 08:57:41 -05:00
trace_clock.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/clock.h>	2017-03-02 08:42:27 +01:00
trace_entries.h	trace: make trace_hwlat timestamp y2038 safe	2017-05-08 17:15:15 -07:00
trace_event_perf.c	perf/ftrace: Fix double traces of perf on ftrace:function	2017-08-29 13:29:29 +02:00
trace_events_filter_test.h
trace_events_filter.c	mm: treewide: remove GFP_TEMPORARY allocation flag	2017-09-13 18:53:16 -07:00
trace_events_hist.c	sched/headers: Prepare to use <linux/rcuupdate.h> instead of <linux/rculist.h> in <linux/sched.h>	2017-03-02 08:42:38 +01:00
trace_events_trigger.c	sched/headers: Prepare to use <linux/rcuupdate.h> instead of <linux/rculist.h> in <linux/sched.h>	2017-03-02 08:42:38 +01:00
trace_events.c	tracing: Fix clear of RECORDED_TGID flag when disabling trace event	2017-09-05 12:00:09 -04:00
trace_export.c	tracing: ftrace_event_is_function() can return boolean	2015-11-02 14:28:05 -05:00
trace_functions_graph.c	treewide: make "nr_cpu_ids" unsigned	2017-09-08 18:26:48 -07:00
trace_functions.c	ftrace: Fix regression with module command in stack_trace_filter	2017-06-29 10:05:45 -04:00
trace_hwlat.c	trace: make trace_hwlat timestamp y2038 safe	2017-05-08 17:15:15 -07:00
trace_irqsoff.c	clocksource: Use a plain u64 instead of cycle_t	2016-12-25 11:04:12 +01:00
trace_kdb.c	tracing: Move trace_flags from global to a trace_array field	2015-09-30 15:22:55 -04:00
trace_kprobe.c	bpf: permit multiple bpf attachments for a single perf event	2017-10-25 10:47:47 +09:00
trace_mmiotrace.c	tracing: Ignore mmiotrace from kernel commandline	2017-09-19 12:36:01 -04:00
trace_nop.c	tracing: Fix typoes in code comment and printk in trace_nop.c	2016-03-08 11:23:57 -05:00
trace_output.c	sched/tracing: Use common task-state helpers	2017-09-29 11:02:45 +02:00
trace_output.h	tracing: Turn seq_print_user_ip() into a static function	2015-09-28 10:16:12 -04:00
trace_printk.c	tracing: Handle NULL formats in hold_module_trace_bprintk_format()	2016-06-20 09:46:12 -04:00
trace_probe.c	tracing/probes: Fix a warning message to show correct maximum length	2017-02-15 10:32:48 -05:00
trace_probe.h	perf/core: Rename CONFIG_[UK]PROBE_EVENT to CONFIG_[UK]PROBE_EVENTS	2017-03-01 10:26:39 +01:00
trace_sched_switch.c	tracing: Add support for recording tgid of tasks	2017-06-27 13:30:28 -04:00
trace_sched_wakeup.c	sched/tracing: Use common task-state helpers	2017-09-29 11:02:45 +02:00
trace_selftest_dynamic.c
trace_selftest.c	ftrace: Fix selftest goto location on error	2017-09-01 12:04:09 -04:00
trace_seq.c	tracing: use %*pb[l] to print bitmaps including cpumasks and nodemasks	2015-02-13 21:21:37 -08:00
trace_stack.c	tracing: Remove RCU work arounds from stack tracer	2017-09-23 16:50:20 -04:00
trace_stat.c	kernel/...: convert pr_warning to pr_warn	2016-03-22 15:36:02 -07:00
trace_stat.h
trace_syscalls.c	bpf: permit multiple bpf attachments for a single perf event	2017-10-25 10:47:47 +09:00
trace_uprobe.c	bpf: permit multiple bpf attachments for a single perf event	2017-10-25 10:47:47 +09:00
trace.c	tracing: Fix trace_pipe behavior for instance traces	2017-09-19 18:33:42 -04:00
trace.h	tracing: Ignore mmiotrace from kernel commandline	2017-09-19 12:36:01 -04:00
tracing_map.c	tracing: Fix kmemleak in tracing_map_array_free()	2017-08-24 10:05:51 -04:00
tracing_map.h	tracing: Update some tracing_map constants and comments	2016-04-19 12:16:06 -04:00