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authorLinus Torvalds <torvalds@linux-foundation.org>2018-06-06 16:39:18 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-06-06 16:39:18 -0700
commit5eb6eed7e0fe880dc8de8da203cc888716bbf196 (patch)
tree05a7c83182b34a567c68b35c091cf31200d5ddec /include/trace
parent8b5c6a3a49d9ebc7dc288870b9c56c4f946035d8 (diff)
parent591a033dc17ff6f684b6b6d1d7426e22d178194f (diff)
Merge tag 'trace-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing updates from Steven Rostedt: "One new feature was added to ftrace, which is the trace_marker now supports triggers. For example: # cd /sys/kernel/debug/tracing # echo 'snapshot' > events/ftrace/print/trigger # echo 'cause snapshot' > trace_marker The rest of the changes are various clean ups and also one stable fix that was added late in the cycle" * tag 'trace-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (21 commits) tracing: Use match_string() instead of open coding it in trace_set_options() branch-check: fix long->int truncation when profiling branches ring-buffer: Fix typo in comment ring-buffer: Fix a bunch of typos in comments tracing/selftest: Add test to test simple snapshot trigger for trace_marker tracing/selftest: Add test to test hist trigger between kernel event and trace_marker tracing/selftest: Add selftests to test trace_marker histogram triggers ftrace/selftest: Fix reset_trigger() to handle triggers with filters ftrace/selftest: Have the reset_trigger code be a bit more careful tracing: Document trace_marker triggers tracing: Allow histogram triggers to access ftrace internal events tracing: Prevent further users of zero size static arrays in trace events tracing: Have zero size length in filter logic be full string tracing: Add trigger file for trace_markers tracefs/ftrace/print tracing: Do not show filter file for ftrace internal events tracing: Add brackets in ftrace event dynamic arrays tracing: Have event_trace_init() called by trace_init_tracefs() tracing: Add __find_event_file() to find event files without restrictions tracing: Do not reference event data in post call triggers tracepoints: Fix the descriptions of tracepoint_probe_register{_prio} ...
Diffstat (limited to 'include/trace')
-rw-r--r--include/trace/trace_events.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/trace/trace_events.h b/include/trace/trace_events.h
index bfda803b0a09..4ecdfe2e3580 100644
--- a/include/trace/trace_events.h
+++ b/include/trace/trace_events.h
@@ -422,6 +422,7 @@ static struct trace_event_functions trace_event_type_funcs_##call = { \
do { \
char *type_str = #type"["__stringify(len)"]"; \
BUILD_BUG_ON(len > MAX_FILTER_STR_VAL); \
+ BUILD_BUG_ON(len <= 0); \
ret = trace_define_field(event_call, type_str, #item, \
offsetof(typeof(field), item), \
sizeof(field.item), \