From: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
To: Pavel Machek <pavel@denx.de>
Cc: linux-kernel@vger.kernel.org, linux-input@vger.kernel.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Dmitry Torokhov <dmitry.torokhov@gmail.com>,
Jiri Slaby <jslaby@suse.com>,
kernel@collabora.com
Subject: Re: [PATCH] tty/sysrq: Add alternative SysRq key
Date: Fri, 26 Jun 2020 13:07:38 +0200 [thread overview]
Message-ID: <8836da2c-b38d-7779-bef0-857ead18b557@collabora.com> (raw)
In-Reply-To: <20200621212106.GB22512@amd>
Hi Pavel,
W dniu 21.06.2020 o 23:21, Pavel Machek pisze:
> Hi!
>
>> There exist machines which don't have SysRq key at all, e.g. chromebooks.
>>
>> This patch allows configuring an alternative key to act as SysRq. Devices
>> which declare KEY_SYSRQ in their 'keybit' bitmap continue using KEY_SYSRQ,
>> but other devices use the alternative SysRq key instead, by default F10.
>> Which key is actually used can be modified with sysrq's module parameter.
>>
>> Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
>
> So... SysRq was selected because you are not going to press
> Alt-Printscreen-X by default.
This patch does not change the Alt-PrintScreen/SysRq-something sequence.
What it does instead is making the 'PrintScreen/SysRq' component of the
sequence configurable for input devices which don't declare KEY_SYSRQ in
their 'keybit' bitmap, so the sequence becomes:
Alt-<alternative sysrq key>-something
If the alternative sysrq key is used (i.e. the input device in question
does not declare KEY_SYSRQ), it is F10 by default and _that_ can be changed
with the module parameter.
To summarize:
- devices which do declare KEY_SYSRQ must use Alt-PrintScreen/SysRq-something
- devices which don't declare KEY_SYSRQ must use Alt-F10-something, but F10
can be changed with a module parameter to something else
Regards,
Andrzej
next prev parent reply other threads:[~2020-06-26 11:07 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-11 13:59 [PATCH 0/6] Magic SysRq extensions Andrzej Pietrasiewicz
2020-05-11 13:59 ` [PATCH 1/6] tty/sysrq: Remove linux,sysrq-reset-seq Andrzej Pietrasiewicz
2020-05-11 17:58 ` Dmitry Torokhov
2020-05-12 9:21 ` Andrzej Pietrasiewicz
2020-05-11 13:59 ` [PATCH 2/6] dt-bindings: input: Remove linux,sysrq-reset-seq binding Andrzej Pietrasiewicz
2020-05-11 13:59 ` [PATCH 3/6] tty/sysrq: Allow configurable SysRq key Andrzej Pietrasiewicz
2020-05-11 16:18 ` Greg Kroah-Hartman
2020-05-11 18:01 ` Dmitry Torokhov
2020-05-12 9:46 ` Andrzej Pietrasiewicz
2020-06-19 16:28 ` [PATCH] tty/sysrq: Add alternative " Andrzej Pietrasiewicz
2020-06-21 21:21 ` Pavel Machek
2020-06-26 11:07 ` Andrzej Pietrasiewicz [this message]
2020-06-22 6:24 ` Jiri Slaby
2020-06-26 11:51 ` Andrzej Pietrasiewicz
2020-07-09 5:05 ` Dmitry Torokhov
2020-07-09 8:15 ` Andrzej Pietrasiewicz
2020-05-11 13:59 ` [PATCH 4/6] tty/sysrq: Extend the sysrq_key_table to cover capital letters Andrzej Pietrasiewicz
2020-05-11 13:59 ` [PATCH 5/6] tty/sysrq: Add configurable handler to signal a process Andrzej Pietrasiewicz
2020-05-11 16:20 ` Greg Kroah-Hartman
2020-05-14 9:06 ` kbuild test robot
2020-05-11 13:59 ` [PATCH 6/6] tty/sysrq: Add configurable handler to execute a compound action Andrzej Pietrasiewicz
2020-05-11 16:21 ` Greg Kroah-Hartman
2020-05-11 18:29 ` Dmitry Torokhov
2020-05-12 9:15 ` Andrzej Pietrasiewicz
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