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Commit d8be7566 authored by Levin, Alexander (Sasha Levin)'s avatar Levin, Alexander (Sasha Levin) Committed by Linus Torvalds
Browse files

kmemcheck: remove whats left of NOTRACK flags 

Now that kmemcheck is gone, we don't need the NOTRACK flags.

Link: http://lkml.kernel.org/r/20171007030159.22241-5-alexander.levin@verizon.com


Signed-off-by: default avatarSasha Levin <alexander.levin@verizon.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Tim Hansen <devtimhansen@gmail.com>
Cc: Vegard Nossum <vegardno@ifi.uio.no>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 75f296d9

arch/x86/include/asm/pgtable.h

+0 −5
Original line number Diff line number Diff line
@@ -667,11 +667,6 @@ static inline bool pte_accessible(struct mm_struct *mm, pte_t a) 
	return false;

}



static inline int pte_hidden(pte_t pte)

{

	return pte_flags(pte) & _PAGE_HIDDEN;

}



static inline int pmd_present(pmd_t pmd)

{

	/*

arch/x86/include/asm/pgtable_types.h

+0 −13
Original line number Diff line number Diff line
@@ -32,7 +32,6 @@ 


#define _PAGE_BIT_SPECIAL	_PAGE_BIT_SOFTW1

#define _PAGE_BIT_CPA_TEST	_PAGE_BIT_SOFTW1

#define _PAGE_BIT_HIDDEN	_PAGE_BIT_SOFTW3 /* hidden by kmemcheck */

#define _PAGE_BIT_SOFT_DIRTY	_PAGE_BIT_SOFTW3 /* software dirty tracking */

#define _PAGE_BIT_DEVMAP	_PAGE_BIT_SOFTW4
@@ -79,18 +78,6 @@ 
#define _PAGE_KNL_ERRATUM_MASK 0

#endif



#ifdef CONFIG_KMEMCHECK

#define _PAGE_HIDDEN	(_AT(pteval_t, 1) << _PAGE_BIT_HIDDEN)

#else

#define _PAGE_HIDDEN	(_AT(pteval_t, 0))

#endif



/*

 * The same hidden bit is used by kmemcheck, but since kmemcheck

 * works on kernel pages while soft-dirty engine on user space,

 * they do not conflict with each other.

 */



#ifdef CONFIG_MEM_SOFT_DIRTY

#define _PAGE_SOFT_DIRTY	(_AT(pteval_t, 1) << _PAGE_BIT_SOFT_DIRTY)

#else

include/linux/gfp.h

+0 −9
Original line number Diff line number Diff line
@@ -37,7 +37,6 @@ struct vm_area_struct; 
#define ___GFP_THISNODE		0x40000u

#define ___GFP_ATOMIC		0x80000u

#define ___GFP_ACCOUNT		0x100000u

#define ___GFP_NOTRACK		0x200000u

#define ___GFP_DIRECT_RECLAIM	0x400000u

#define ___GFP_WRITE		0x800000u

#define ___GFP_KSWAPD_RECLAIM	0x1000000u
@@ -201,19 +200,11 @@ struct vm_area_struct; 
 * __GFP_COMP address compound page metadata.

 *

 * __GFP_ZERO returns a zeroed page on success.

 *

 * __GFP_NOTRACK avoids tracking with kmemcheck.

 *

 * __GFP_NOTRACK_FALSE_POSITIVE is an alias of __GFP_NOTRACK. It's a means of

 *   distinguishing in the source between false positives and allocations that

 *   cannot be supported (e.g. page tables).

 */

#define __GFP_COLD	((__force gfp_t)___GFP_COLD)

#define __GFP_NOWARN	((__force gfp_t)___GFP_NOWARN)

#define __GFP_COMP	((__force gfp_t)___GFP_COMP)

#define __GFP_ZERO	((__force gfp_t)___GFP_ZERO)

#define __GFP_NOTRACK	((__force gfp_t)___GFP_NOTRACK)

#define __GFP_NOTRACK_FALSE_POSITIVE (__GFP_NOTRACK)



/* Disable lockdep for GFP context tracking */

#define __GFP_NOLOCKDEP ((__force gfp_t)___GFP_NOLOCKDEP)

include/linux/slab.h

+0 −6
Original line number Diff line number Diff line
@@ -89,12 +89,6 @@ 
/* Avoid kmemleak tracing */

#define SLAB_NOLEAKTRACE	((slab_flags_t __force)0x00800000U)



/* Don't track use of uninitialized memory */

#ifdef CONFIG_KMEMCHECK

# define SLAB_NOTRACK		((slab_flags_t __force)0x01000000U)

#else

# define SLAB_NOTRACK		0

#endif

/* Fault injection mark */

#ifdef CONFIG_FAILSLAB

# define SLAB_FAILSLAB		((slab_flags_t __force)0x02000000U)

include/trace/events/mmflags.h

+0 −1
Original line number Diff line number Diff line
@@ -46,7 +46,6 @@ 
	{(unsigned long)__GFP_RECLAIMABLE,	"__GFP_RECLAIMABLE"},	\

	{(unsigned long)__GFP_MOVABLE,		"__GFP_MOVABLE"},	\

	{(unsigned long)__GFP_ACCOUNT,		"__GFP_ACCOUNT"},	\

	{(unsigned long)__GFP_NOTRACK,		"__GFP_NOTRACK"},	\

	{(unsigned long)__GFP_WRITE,		"__GFP_WRITE"},		\

	{(unsigned long)__GFP_RECLAIM,		"__GFP_RECLAIM"},	\

	{(unsigned long)__GFP_DIRECT_RECLAIM,	"__GFP_DIRECT_RECLAIM"},\