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: Sasha 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: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
index f735c30..09f9e1e 100644 (file)
--- a/arch/x86/include/asm/pgtable.h
+++ b/arch/x86/include/asm/pgtable.h
@@ -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)
 {
        /*

diff --git a/arch/x86/include/asm/pgtable_types.h b/arch/x86/include/asm/pgtable_types.h
index 9e9b05f..3696398 100644 (file)
--- a/arch/x86/include/asm/pgtable_types.h
+++ b/arch/x86/include/asm/pgtable_types.h
@@ -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

diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index 7101437..b041f94 100644 (file)
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -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)

diff --git a/include/linux/slab.h b/include/linux/slab.h
index ebddfca..79f6532 100644 (file)
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -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)

diff --git a/include/trace/events/mmflags.h b/include/trace/events/mmflags.h
index 648cbf6..72162f3 100644 (file)
--- a/include/trace/events/mmflags.h
+++ b/include/trace/events/mmflags.h
@@ -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"},\

diff --git a/mm/slub.c b/mm/slub.c
index 91aa99b..c2c41e1 100644 (file)
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -5635,8 +5635,6 @@ static char *create_unique_id(struct kmem_cache *s)
                *p++ = 'a';
        if (s->flags & SLAB_CONSISTENCY_CHECKS)
                *p++ = 'F';
-       if (!(s->flags & SLAB_NOTRACK))
-               *p++ = 't';
        if (s->flags & SLAB_ACCOUNT)
                *p++ = 'A';
        if (p != name + 1)

diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c
index 557d391..cbf7073 100644 (file)
--- a/tools/perf/builtin-kmem.c
+++ b/tools/perf/builtin-kmem.c
@@ -655,7 +655,6 @@ static const struct {
        { "__GFP_RECLAIMABLE",          "RC" },
        { "__GFP_MOVABLE",              "M" },
        { "__GFP_ACCOUNT",              "AC" },
-       { "__GFP_NOTRACK",              "NT" },
        { "__GFP_WRITE",                "WR" },
        { "__GFP_RECLAIM",              "R" },
        { "__GFP_DIRECT_RECLAIM",       "DR" },