linux-kernel - [PATCH 0/3] sysrq: Simple fixes and console visibility

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Message-Id: <20190111162038.19771-1-pmladek@suse.com>
Date:   Fri, 11 Jan 2019 17:20:35 +0100
From:   Petr Mladek <pmladek@...e.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jslaby@...e.com>
Cc:     Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
        linux-kernel@...r.kernel.org, Petr Mladek <pmladek@...e.com>
Subject: [PATCH 0/3] sysrq: Simple fixes and console visibility

The first two patches are simple bug fixes.

The last one is RFC to fix a bug report. It is not obvious
why sysrq debug operations show only the sysrq header on
the console. The filtering by console_loglevel makes
some sense. The level can actually be set by sysrq.

The solution implemented in the RFC is a warning. It is a simple
idea but the implementation is relatively complicated. Mainly
because all parts sysrq, printk, and consoles are
heavily configurable.

PS: I sent the first patch also separately. It was simple
and it was independent in my first draft of the RFC.
I am sorry for confusion.

Petr Mladek (3):
  sysrq: Restore original console_loglevel when sysrq disabled
  sysrq: Remove duplicated sysrq message
  sysrq: Warn about insufficient console_loglevel

 drivers/tty/sysrq.c    | 34 ++++++++++++++++++++++++++++++----
 include/linux/printk.h |  7 +++++++
 kernel/printk/printk.c |  7 +++----
 3 files changed, 40 insertions(+), 8 deletions(-)

-- 
2.13.7