linux-kernel - [PATCH v2 03/11] kasan: docs: update usage section

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Message-Id: <48427809cd4b8b5d6bc00926cbe87e2b5081df17.1615559068.git.andreyknvl@google.com>
Date:   Fri, 12 Mar 2021 15:24:26 +0100
From:   Andrey Konovalov <andreyknvl@...gle.com>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Alexander Potapenko <glider@...gle.com>,
        Marco Elver <elver@...gle.com>
Cc:     Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Dmitry Vyukov <dvyukov@...gle.com>, kasan-dev@...glegroups.com,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        Andrey Konovalov <andreyknvl@...gle.com>
Subject: [PATCH v2 03/11] kasan: docs: update usage section

Update the "Usage" section in KASAN documentation:

- Add inline code snippet markers.
- Reword the part about stack traces for clarity.
- Other minor clean-ups.

Signed-off-by: Andrey Konovalov <andreyknvl@...gle.com>
---
 Documentation/dev-tools/kasan.rst | 23 +++++++++++------------
 1 file changed, 11 insertions(+), 12 deletions(-)

diff --git a/Documentation/dev-tools/kasan.rst b/Documentation/dev-tools/kasan.rst
index 2f2697b290d5..46f4e9680805 100644
--- a/Documentation/dev-tools/kasan.rst
+++ b/Documentation/dev-tools/kasan.rst
@@ -41,22 +41,21 @@ and riscv architectures, and tag-based KASAN modes are supported only for arm64.
 Usage
 -----
 
-To enable KASAN configure kernel with::
+To enable KASAN, configure the kernel with::
 
-	  CONFIG_KASAN = y
+	  CONFIG_KASAN=y
 
-and choose between CONFIG_KASAN_GENERIC (to enable generic KASAN),
-CONFIG_KASAN_SW_TAGS (to enable software tag-based KASAN), and
-CONFIG_KASAN_HW_TAGS (to enable hardware tag-based KASAN).
+and choose between ``CONFIG_KASAN_GENERIC`` (to enable generic KASAN),
+``CONFIG_KASAN_SW_TAGS`` (to enable software tag-based KASAN), and
+``CONFIG_KASAN_HW_TAGS`` (to enable hardware tag-based KASAN).
 
-For software modes, you also need to choose between CONFIG_KASAN_OUTLINE and
-CONFIG_KASAN_INLINE. Outline and inline are compiler instrumentation types.
-The former produces smaller binary while the latter is 1.1 - 2 times faster.
+For software modes, also choose between ``CONFIG_KASAN_OUTLINE`` and
+``CONFIG_KASAN_INLINE``. Outline and inline are compiler instrumentation types.
+The former produces a smaller binary while the latter is 1.1-2 times faster.
 
-For better error reports that include stack traces, enable CONFIG_STACKTRACE.
-
-To augment reports with last allocation and freeing stack of the physical page,
-it is recommended to enable also CONFIG_PAGE_OWNER and boot with page_owner=on.
+To include alloc and free stack traces of affected slab objects into reports,
+enable ``CONFIG_STACKTRACE``. To include alloc and free stack traces of affected
+physical pages, enable ``CONFIG_PAGE_OWNER`` and boot with ``page_owner=on``.
 
 Error reports
 ~~~~~~~~~~~~~
-- 
2.31.0.rc2.261.g7f71774620-goog