From: Rasmus Villemoes <linux@rasmusvillemoes.dk>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Joerg Roedel <jroedel@suse.de>, Wei Liu <wei.liu@kernel.org>,
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Corey Minyard <cminyard@mvista.com>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Mathieu Poirier <mathieu.poirier@linaro.org>,
Andrew Morton <akpm@linux-foundation.org>,
Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>,
Vlastimil Babka <vbabka@suse.cz>,
"Paul E. McKenney" <paulmck@kernel.org>,
"Steven Rostedt (VMware)" <rostedt@goodmis.org>,
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Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
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Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Lai Jiangshan <jiangshanlai@gmail.com>,
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Luis Chamberlain <mcgrof@kernel.org>,
Kees Cook <keescook@chromium.org>,
Iurii Zaikin <yzaikin@google.com>
Subject: Re: [PATCH v1 1/1] kernel.h: Split out panic and oops helpers
Date: Thu, 8 Apr 2021 14:45:12 +0200 [thread overview]
Message-ID: <03be4ed9-8e8d-e2c2-611d-ac09c61d84f9@rasmusvillemoes.dk> (raw)
In-Reply-To: <20210406133158.73700-1-andriy.shevchenko@linux.intel.com>
On 06/04/2021 15.31, Andy Shevchenko wrote:
> kernel.h is being used as a dump for all kinds of stuff for a long time.
> Here is the attempt to start cleaning it up by splitting out panic and
> oops helpers.
Yay.
Acked-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
> At the same time convert users in header and lib folder to use new header.
> Though for time being include new header back to kernel.h to avoid twisted
> indirected includes for existing users.
I think it would be good to have some place to note that "This #include
is just for backwards compatibility, it will go away RealSoonNow, so if
you rely on something from linux/panic.h, include that explicitly
yourself TYVM. And if you're looking for a janitorial task, write a
script to check that every file that uses some identifier defined in
panic.h actually includes that file. When all offenders are found and
dealt with, remove the #include and this note.".
> +
> +struct taint_flag {
> + char c_true; /* character printed when tainted */
> + char c_false; /* character printed when not tainted */
> + bool module; /* also show as a per-module taint flag */
> +};
> +
> +extern const struct taint_flag taint_flags[TAINT_FLAGS_COUNT];
While you're doing this, nothing outside of kernel/panic.c cares about
the definition of struct taint_flag or use the taint_flags array, so
could you make the definition private to that file and make the array
static? (Another patch, of course.)
> +enum lockdep_ok {
> + LOCKDEP_STILL_OK,
> + LOCKDEP_NOW_UNRELIABLE,
> +};
> +
> +extern const char *print_tainted(void);
> +extern void add_taint(unsigned flag, enum lockdep_ok);
> +extern int test_taint(unsigned flag);
> +extern unsigned long get_taint(void);
I know you're just moving code, but it would be a nice opportunity to
drop the redundant externs.
Rasmus
next prev parent reply other threads:[~2021-04-08 12:45 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-06 13:31 [PATCH v1 1/1] kernel.h: Split out panic and oops helpers Andy Shevchenko
2021-04-06 14:29 ` Bjorn Andersson
2021-04-06 14:39 ` Mike Rapoport
2021-04-06 14:39 ` Corey Minyard
2021-04-06 14:43 ` Christian Brauner
2021-04-06 15:09 ` Arnd Bergmann
2021-04-06 16:51 ` Luis Chamberlain
2021-04-07 7:33 ` Andy Shevchenko
2021-04-07 14:30 ` Luis Chamberlain
2021-04-07 14:59 ` Andy Shevchenko
2021-04-07 15:29 ` Luis Chamberlain
2021-04-06 18:44 ` Kees Cook
2021-04-07 8:46 ` Andy Shevchenko
2021-04-09 6:23 ` Andrew Morton
2021-04-09 8:22 ` Andy Shevchenko
2021-04-06 23:41 ` Wei Liu
2021-04-08 12:45 ` Rasmus Villemoes [this message]
2021-04-08 13:29 ` Andy Shevchenko
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