From: Tom Zanussi Date: Mon, 15 Jan 2018 20:52:10 -0600 Subject: [PATCH 47/48] tracing: Add inter-event blurb to HIST_TRIGGERS config option Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.16/older/patches-4.16.8-rt3.tar.xz So that users know that inter-event tracing is supported as part of the HIST_TRIGGERS option, include text to that effect in the help text. Link: http://lkml.kernel.org/r/a38e24231d8d980be636b56d35814570acfd167a.1516069914.git.tom.zanussi@linux.intel.com Signed-off-by: Tom Zanussi Signed-off-by: Steven Rostedt (VMware) (cherry picked from commit 02942764c4fd12caeb29868822b7744fa91a9ad0) Signed-off-by: Sebastian Andrzej Siewior --- kernel/trace/Kconfig | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) --- a/kernel/trace/Kconfig +++ b/kernel/trace/Kconfig @@ -606,7 +606,10 @@ config HIST_TRIGGERS event activity as an initial guide for further investigation using more advanced tools. - See Documentation/trace/events.txt. + Inter-event tracing of quantities such as latencies is also + supported using hist triggers under this option. + + See Documentation/trace/histogram.txt. If in doubt, say N. config MMIOTRACE_TEST