Masami Hiramatsu 3734cce8cf tracing: Return -ENOENT if there is no target synthetic event ...

commit 18858511fd upstream.

Return -ENOENT error if there is no target synthetic event.
This notices an operation failure to user as below;

  # echo 'wakeup_latency u64 lat; pid_t pid;' > synthetic_events
  # echo '!wakeup' >> synthetic_events
  sh: write error: No such file or directory

Link: http://lkml.kernel.org/r/154013449986.25576.9487131386597290172.stgit@devbox

Acked-by: Tom Zanussi <zanussi@linux.intel.com>
Tested-by: Tom Zanussi <zanussi@linux.intel.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Rajvi Jingar <rajvi.jingar@intel.com>
Cc: stable@vger.kernel.org
Fixes: 4b147936fa ('tracing: Add support for 'synthetic' events')
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2018-11-13 11:12:52 -08:00

..

blktrace.c

tracing/blktrace: Fix to allow setting same value

2018-09-09 10:32:35 +02:00

bpf_trace.c

bpf: guard bpf_get_current_cgroup_id() with CONFIG_CGROUPS

2018-06-04 21:52:26 +02:00

ftrace.c

ftrace: Nuke clear_ftrace_function

2018-07-03 18:33:19 -04:00

Kconfig

docs: Fix some broken references

2018-06-15 18:10:01 -03:00

Makefile

Merge tag 'trace-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

2017-11-17 14:58:01 -08:00

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

ring_buffer_benchmark.c

…

ring_buffer.c

ring-buffer: Allow for rescheduling when removing pages

2018-09-29 02:55:57 -07:00

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

rcu: Rename cond_resched_rcu_qs() to cond_resched_tasks_rcu_qs()

2018-05-15 10:27:29 -07:00

trace_benchmark.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

trace_branch.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

trace_clock.c

tracing: Hide global trace clock from lockdep

2018-04-06 08:56:52 -04:00

trace_entries.h

tracing: Add trigger file for trace_markers tracefs/ftrace/print

2018-05-29 08:28:53 -04:00

trace_event_perf.c

perf/core: Fix perf_uprobe_init()

2018-04-10 07:33:10 +02:00

trace_events_filter_test.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

trace_events_filter.c

tracing: Make create_filter() code match the comments

2018-07-03 18:14:40 -04:00

trace_events_hist.c

tracing: Return -ENOENT if there is no target synthetic event

2018-11-13 11:12:52 -08:00

trace_events_trigger.c

tracing: Fix possible double free in event_enable_trigger_func()

2018-07-25 21:25:16 -04:00

trace_events.c

tracing: Do not show filter file for ftrace internal events

2018-05-29 08:28:46 -04:00

trace_export.c

tracing: Add trigger file for trace_markers tracefs/ftrace/print

2018-05-29 08:28:53 -04:00

trace_functions_graph.c

tracing: Fix missing return symbol in function_graph output

2018-07-03 18:47:11 -04:00

trace_functions.c

tracing: Update stack trace skipping for ORC unwinder

2018-01-23 15:57:00 -05:00

trace_hwlat.c

…

trace_irqsoff.c

…

trace_kdb.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

trace_kprobe.c

tracing: Quiet gcc warning about maybe unused link variable

2018-07-25 22:33:50 -04:00

trace_mmiotrace.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

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: Reorder display of TGID to be after PID

2018-07-12 19:56:25 -04:00

trace_output.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

trace_printk.c

treewide: Align function definition open/close braces

2018-03-26 11:13:09 +02:00

trace_probe.c

tracing: probeevent: Fix to support minus offset from symbol

2018-03-23 12:02:37 -04:00

trace_probe.h

Merge branch 'perf/urgent' into perf/core

2018-03-29 16:03:48 +02:00

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

Merge branch 'linus' into sched/core, to pick up fixes

2017-11-08 10:17:15 +01:00

trace_selftest_dynamic.c

ftrace: Mark function tracer test functions noinline/noclone

2018-01-23 15:57:29 -05:00

trace_selftest.c

Merge tag 'trace-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

2017-11-17 14:58:01 -08:00

trace_seq.c

…

trace_stack.c

tracing: Fix the file mode of stack tracer

2018-05-03 11:58:05 -04:00

trace_stat.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

trace_stat.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

trace_syscalls.c

Merge tag 'trace-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

2017-11-17 14:58:01 -08:00

trace_uprobe.c

uprobes: Use synchronize_rcu() not synchronize_sched()

2018-09-09 10:32:36 +02:00

trace.c

tracing: Do not call start/stop() functions when tracing_on does not change

2018-09-09 10:32:35 +02:00

trace.h

tracing: Optimize trace_buffer_iter() logic

2018-07-03 18:23:33 -04:00

tracing_map.c

treewide: Use array_size() in vmalloc()

2018-06-12 16:19:22 -07:00

tracing_map.h

tracing: Add per-element variable support to tracing_map

2018-03-10 16:05:53 -05:00