linux-kernel - [PATCH v4 36/37] tracing: Add inter-event blurb to HIST

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Message-Id: <4be249b1ccbec16f94ea53c9d6ec6eb2288a5aab.1509395596.git.tom.zanussi@linux.intel.com>
Date:   Mon, 30 Oct 2017 15:52:18 -0500
From:   Tom Zanussi <tom.zanussi@...ux.intel.com>
To:     rostedt@...dmis.org
Cc:     tglx@...utronix.de, mhiramat@...nel.org, namhyung@...nel.org,
        vedang.patel@...el.com, bigeasy@...utronix.de,
        joel.opensrc@...il.com, joelaf@...gle.com,
        mathieu.desnoyers@...icios.com, baohong.liu@...el.com,
        rajvi.jingar@...el.com, julia@...com, linux-kernel@...r.kernel.org,
        linux-rt-users@...r.kernel.org,
        Tom Zanussi <tom.zanussi@...ux.intel.com>
Subject: [PATCH v4 36/37] tracing: Add inter-event blurb to HIST_TRIGGERS config option

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.

Signed-off-by: Tom Zanussi <tom.zanussi@...ux.intel.com>
---
 kernel/trace/Kconfig | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index b8395a0..b01536d 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -596,6 +596,9 @@ config HIST_TRIGGERS
 	  event activity as an initial guide for further investigation
 	  using more advanced tools.
 
+	  Inter-event tracing of quantities such as latencies is also
+	  supported using hist triggers under this option.
+
 	  See Documentation/trace/events.txt.
 	  If in doubt, say N.
 
-- 
1.9.3