linux-kernel - Re: [PATCH] [v3] warn on performance-impacting configs aka. TAINT

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Message-ID: <20140821205727.GA7200@redhat.com>
Date:	Thu, 21 Aug 2014 16:57:27 -0400
From:	Dave Jones <davej@...hat.com>
To:	Dave Hansen <dave@...1.net>
Cc:	linux-kernel@...r.kernel.org, dave.hansen@...ux.intel.com,
	peterz@...radead.org, mingo@...hat.com, ak@...ux.intel.com,
	tim.c.chen@...ux.intel.com, akpm@...ux-foundation.org,
	cl@...ux.com, penberg@...nel.org, linux-mm@...ck.org,
	kirill@...temov.name, lauraa@...eaurora.org
Subject: Re: [PATCH] [v3] warn on performance-impacting configs aka.
 TAINT_PERFORMANCE

On Thu, Aug 21, 2014 at 01:24:24PM -0700, Dave Hansen wrote:

 > Changes from v2:
 >  * remove tainting and stack track

...

 > diff -puN include/linux/kernel.h~taint-performance include/linux/kernel.h
 > --- a/include/linux/kernel.h~taint-performance	2014-08-19 11:38:07.424005355 -0700
 > +++ b/include/linux/kernel.h	2014-08-19 11:38:20.960615904 -0700
 > @@ -471,6 +471,7 @@ extern enum system_states {
 >  #define TAINT_OOT_MODULE		12
 >  #define TAINT_UNSIGNED_MODULE		13
 >  #define TAINT_SOFTLOCKUP		14
 > +#define TAINT_PERFORMANCE		15
 >  
 >  extern const char hex_asc[];
 >  #define hex_asc_lo(x)	hex_asc[((x) & 0x0f)]
 > diff -puN kernel/panic.c~taint-performance kernel/panic.c
 > --- a/kernel/panic.c~taint-performance	2014-08-19 11:38:28.928975233 -0700
 > +++ b/kernel/panic.c	2014-08-20 09:56:29.528471033 -0700
 > @@ -225,6 +225,7 @@ static const struct tnt tnts[] = {
 >  	{ TAINT_OOT_MODULE,		'O', ' ' },
 >  	{ TAINT_UNSIGNED_MODULE,	'E', ' ' },
 >  	{ TAINT_SOFTLOCKUP,		'L', ' ' },
 > +	{ TAINT_PERFORMANCE,		'Q', ' ' },

You don't need these any more.

	Dave
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