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Filename Latest commit message Latest commit date
Petr Mladek 0b74d4d763 vsprintf: Consolidate handling of unknown pointer specifiers
There are few printk formats that make sense only with two or more
specifiers. Also some specifiers make sense only when a kernel feature
is enabled.

The handling of unknown specifiers is inconsistent and not helpful.
Using WARN() looks like an overkill for this type of error. pr_warn()
is not good either. It would by handled via printk_safe buffer and
it might be hard to match it with the problematic string.

A reasonable compromise seems to be writing the unknown format specifier
into the original string with a question mark, for example (%pC?).
It should be self-explaining enough. Note that it is in brackets
to follow the (null) style.

Note that it introduces a warning about that test_hashed() function
is unused. It is going to be used again by a later patch.

Link: http://lkml.kernel.org/r/20190417115350.20479-8-pmladek@suse.com
To: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: "Tobin C . Harding" <me@tobin.cc>
Cc: Joe Perches <joe@perches.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Cc: linux-kernel@vger.kernel.org
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
2019-04-26 16:20:20 +02:00
arch io_uring-2019-03-06 2019-03-08 14:48:40 -08:00
block io_uring-2019-03-06 2019-03-08 14:48:40 -08:00
certs
crypto
Documentation Printk changes for 5.1 2019-03-09 09:22:42 -08:00
drivers for-5.1/block-20190302 2019-03-08 14:12:17 -08:00
fs pstore cleanups 2019-03-09 09:02:47 -08:00
include Printk changes for 5.1 2019-03-09 09:22:42 -08:00
init io_uring-2019-03-06 2019-03-08 14:48:40 -08:00
ipc
kernel Printk changes for 5.1 2019-03-09 09:22:42 -08:00
lib vsprintf: Consolidate handling of unknown pointer specifiers 2019-04-26 16:20:20 +02:00
LICENSES
mm
net io_uring-2019-03-06 2019-03-08 14:48:40 -08:00
samples
scripts increased structleak coverage 2019-03-09 09:06:15 -08:00
security
sound
tools linux-kselftest-5.1-rc1 2019-03-09 09:19:31 -08:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS MAINTAINERS: fix typo in Mimi Zohar's address 2019-03-09 08:51:36 -08:00
Makefile
README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.