From 5d18c23c763d4cc4f9abcf413457a7a12659a46f Mon Sep 17 00:00:00 2001
From: Yoann Congal <yoann.congal@smile.fr>
Date: Sat, 21 Jan 2023 23:53:05 +0100
Subject: [PATCH] Documentation: kprobetrace: Split paragraphs
Add an empty line to force the output to split paragraphs like it is
splitin the REST source.
Signed-off-by: Yoann Congal <yoann.congal@smile.fr>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Link: https://lore.kernel.org/r/20230121225304.1711635-4-yoann.congal@smile.fr
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
---
Documentation/trace/kprobetrace.rst | 2 ++
1 file changed, 2 insertions(+)
diff --git a/Documentation/trace/kprobetrace.rst b/Documentation/trace/kprobetrace.rst
index febfd3792854f..fda155237be7a 100644
--- a/Documentation/trace/kprobetrace.rst
+++ b/Documentation/trace/kprobetrace.rst
@@ -74,12 +74,14 @@ respectively. 'x' prefix implies it is unsigned. Traced arguments are shown
in decimal ('s' and 'u') or hexadecimal ('x'). Without type casting, 'x32'
or 'x64' is used depends on the architecture (e.g. x86-32 uses x32, and
x86-64 uses x64).
+
These value types can be an array. To record array data, you can add '[N]'
(where N is a fixed number, less than 64) to the base type.
E.g. 'x16[4]' means an array of x16 (2-byte hex) with 4 elements.
Note that the array can be applied to memory type fetchargs, you can not
apply it to registers/stack-entries etc. (for example, '$stack1:x8[8]' is
wrong, but '+8($stack):x8[8]' is OK.)
+
String type is a special type, which fetches a "null-terminated" string from
kernel space. This means it will fail and store NULL if the string container
has been paged out. "ustring" type is an alternative of string for user-space.
--
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