linux-kernel - [PATCH v4 3/3] twist: Add option for selecting twist options for syzkaller's testing

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Date:   Tue, 21 Apr 2020 22:19:51 +0900
From:   Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Dmitry Vyukov <dvyukov@...gle.com>
Cc:     Matthew Garrett <mjg59@...gle.com>,
        Andi Kleen <ak@...ux.intel.com>,
        "Theodore Y . Ts'o" <tytso@....edu>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Petr Mladek <pmladek@...e.com>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Arnd Bergmann <arnd@...db.de>, Jiri Slaby <jslaby@...e.com>,
        Peter Zijlstra <peterz@...radead.org>,
        LKML <linux-kernel@...r.kernel.org>, syzkaller@...glegroups.com,
        Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
Subject: [PATCH v4 3/3] twist: Add option for selecting twist options for syzkaller's testing

When a kernel developer adds a kernel config option, they will not go
and update configs on all external testing systems. This problem is also
common for "enable all boot tests that can run on this kernel", or
"configure a 'standard' debug build". Currently doing these things
require all of expertise, sacred knowledge, checking all configs
one-by-one as well as checking every new kernel patch and that needs to
be done by everybody doing any kernel testing.

In order to reduce the burden of maintaining kernel config options, this
patch introduces a kernel config option which will select twist options
when building kernels for syzkaller's testing.

Signed-off-by: Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
Signed-off-by: Dmitry Vyukov <dvyukov@...gle.com>
---
 lib/Kconfig.twist | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/Kconfig.twist b/lib/Kconfig.twist
index a1d038bcc2a5..95020a56bbfc 100644
--- a/lib/Kconfig.twist
+++ b/lib/Kconfig.twist
@@ -10,6 +10,12 @@ menuconfig TWIST_KERNEL_BEHAVIOR
 
 if TWIST_KERNEL_BEHAVIOR
 
+config TWIST_FOR_SYZKALLER_TESTING
+       bool "Select all twist options suitable for syzkaller testing"
+       select TWIST_DISABLE_KBD_K_SPEC_HANDLER
+       help
+	 Say N unless you are building kernels for syzkaller's testing.
+
 config TWIST_DISABLE_KBD_K_SPEC_HANDLER
        bool "Disable k_spec() function in drivers/tty/vt/keyboard.c"
        help
-- 
2.18.2