From 4a6dae6d382e9edf3ff440b819e554ed706359bc Mon Sep 17 00:00:00 2001
From: Nick Piggin <nickpiggin@yahoo.com.au>
Date: Sun, 13 Nov 2005 16:07:24 -0800
Subject: [PATCH] atomic: cmpxchg

Introduce an atomic_cmpxchg operation.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: "Paul E. McKenney" <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 Documentation/atomic_ops.txt | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'Documentation')

diff --git a/Documentation/atomic_ops.txt b/Documentation/atomic_ops.txt
index 8eedaa24f5e2..f1744161ef06 100644
--- a/Documentation/atomic_ops.txt
+++ b/Documentation/atomic_ops.txt
@@ -115,6 +115,21 @@ boolean is return which indicates whether the resulting counter value
 is negative.  It requires explicit memory barrier semantics around the
 operation.
 
+Finally:
+
+	int atomic_cmpxchg(atomic_t *v, int old, int new);
+
+This performs an atomic compare exchange operation on the atomic value v,
+with the given old and new values. Like all atomic_xxx operations,
+atomic_cmpxchg will only satisfy its atomicity semantics as long as all
+other accesses of *v are performed through atomic_xxx operations.
+
+atomic_cmpxchg requires explicit memory barriers around the operation.
+
+The semantics for atomic_cmpxchg are the same as those defined for 'cas'
+below.
+
+
 If a caller requires memory barrier semantics around an atomic_t
 operation which does not return a value, a set of interfaces are
 defined which accomplish this:
-- 
cgit v1.2.3


From 8426e1f6af0fd7f44d040af7263750c5a52f3cc3 Mon Sep 17 00:00:00 2001
From: Nick Piggin <nickpiggin@yahoo.com.au>
Date: Sun, 13 Nov 2005 16:07:25 -0800
Subject: [PATCH] atomic: inc_not_zero

Introduce an atomic_inc_not_zero operation.  Make this a special case of
atomic_add_unless because lockless pagecache actually wants
atomic_inc_not_negativeone due to its offset refcount.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: "Paul E. McKenney" <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 Documentation/atomic_ops.txt   | 14 +++++++++++++-
 arch/sparc/lib/atomic32.c      | 15 +++++++++++++++
 include/asm-alpha/atomic.h     | 10 ++++++++++
 include/asm-arm/atomic.h       | 11 +++++++++++
 include/asm-arm26/atomic.h     | 15 +++++++++++++++
 include/asm-cris/atomic.h      | 14 ++++++++++++++
 include/asm-frv/atomic.h       | 10 ++++++++++
 include/asm-h8300/atomic.h     | 14 ++++++++++++++
 include/asm-i386/atomic.h      | 19 +++++++++++++++++++
 include/asm-ia64/atomic.h      | 10 ++++++++++
 include/asm-m68k/atomic.h      | 10 ++++++++++
 include/asm-m68knommu/atomic.h | 10 ++++++++++
 include/asm-mips/atomic.h      | 19 +++++++++++++++++++
 include/asm-parisc/atomic.h    | 19 +++++++++++++++++++
 include/asm-powerpc/atomic.h   | 25 +++++++++++++++++++++++++
 include/asm-s390/atomic.h      | 10 ++++++++++
 include/asm-sh/atomic.h        | 15 +++++++++++++++
 include/asm-sh64/atomic.h      | 15 +++++++++++++++
 include/asm-sparc/atomic.h     |  3 +++
 include/asm-sparc64/atomic.h   | 10 ++++++++++
 include/asm-v850/atomic.h      | 16 ++++++++++++++++
 include/asm-x86_64/atomic.h    | 19 +++++++++++++++++++
 include/asm-xtensa/atomic.h    | 19 +++++++++++++++++++
 23 files changed, 321 insertions(+), 1 deletion(-)

(limited to 'Documentation')

diff --git a/Documentation/atomic_ops.txt b/Documentation/atomic_ops.txt
index f1744161ef06..23a1c2402bcc 100644
--- a/Documentation/atomic_ops.txt
+++ b/Documentation/atomic_ops.txt
@@ -115,7 +115,7 @@ boolean is return which indicates whether the resulting counter value
 is negative.  It requires explicit memory barrier semantics around the
 operation.
 
-Finally:
+Then:
 
 	int atomic_cmpxchg(atomic_t *v, int old, int new);
 
@@ -129,6 +129,18 @@ atomic_cmpxchg requires explicit memory barriers around the operation.
 The semantics for atomic_cmpxchg are the same as those defined for 'cas'
 below.
 
+Finally:
+
+	int atomic_add_unless(atomic_t *v, int a, int u);
+
+If the atomic value v is not equal to u, this function adds a to v, and
+returns non zero. If v is equal to u then it returns zero. This is done as
+an atomic operation.
+
+atomic_add_unless requires explicit memory barriers around the operation.
+
+atomic_inc_not_zero, equivalent to atomic_add_unless(v, 1, 0)
+
 
 If a caller requires memory barrier semantics around an atomic_t
 operation which does not return a value, a set of interfaces are
diff --git a/arch/sparc/lib/atomic32.c b/arch/sparc/lib/atomic32.c
index be46f6545184..cb3cf0f22822 100644
--- a/arch/sparc/lib/atomic32.c
+++ b/arch/sparc/lib/atomic32.c
@@ -53,6 +53,21 @@ int atomic_cmpxchg(atomic_t *v, int old, int new)
 	return ret;
 }
 
+int atomic_add_unless(atomic_t *v, int a, int u)
+{
+	int ret;
+	unsigned long flags;
+
+	spin_lock_irqsave(ATOMIC_HASH(v), flags);
+	ret = v->counter;
+	if (ret != u)
+		v->counter += a;
+	spin_unlock_irqrestore(ATOMIC_HASH(v), flags);
+	return ret != u;
+}
+
+static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr)
+/* Atomic operations are already serializing */
 void atomic_set(atomic_t *v, int i)
 {
 	unsigned long flags;
diff --git a/include/asm-alpha/atomic.h b/include/asm-alpha/atomic.h
index a6660809a879..36505bb4e8cb 100644
--- a/include/asm-alpha/atomic.h
+++ b/include/asm-alpha/atomic.h
@@ -179,6 +179,16 @@ static __inline__ long atomic64_sub_return(long i, atomic64_t * v)
 
 #define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
 
+#define atomic_add_unless(v, a, u)				\
+({								\
+	int c, old;						\
+	c = atomic_read(v);					\
+	while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \
+		c = old;					\
+	c != (u);						\
+})
+#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+
 #define atomic_dec_return(v) atomic_sub_return(1,(v))
 #define atomic64_dec_return(v) atomic64_sub_return(1,(v))
 
diff --git a/include/asm-arm/atomic.h b/include/asm-arm/atomic.h
index 8ab1689ef56a..75b802719723 100644
--- a/include/asm-arm/atomic.h
+++ b/include/asm-arm/atomic.h
@@ -173,6 +173,17 @@ static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr)
 
 #endif /* __LINUX_ARM_ARCH__ */
 
+static inline int atomic_add_unless(atomic_t *v, int a, int u)
+{
+	int c, old;
+
+	c = atomic_read(v);
+	while (c != u && (old = atomic_cmpxchg((v), c, c + a)) != c)
+		c = old;
+	return c != u;
+}
+#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+
 #define atomic_add(i, v)	(void) atomic_add_return(i, v)
 #define atomic_inc(v)		(void) atomic_add_return(1, v)
 #define atomic_sub(i, v)	(void) atomic_sub_return(i, v)
diff --git a/include/asm-arm26/atomic.h b/include/asm-arm26/atomic.h
index 54b24ead7132..a47cadc59686 100644
--- a/include/asm-arm26/atomic.h
+++ b/include/asm-arm26/atomic.h
@@ -76,6 +76,21 @@ static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
 	return ret;
 }
 
+static inline int atomic_add_unless(atomic_t *v, int a, int u)
+{
+	int ret;
+	unsigned long flags;
+
+	local_irq_save(flags);
+	ret = v->counter;
+	if (ret != u)
+		v->counter += a;
+	local_irq_restore(flags);
+
+	return ret != u;
+}
+#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+
 static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr)
 {
         unsigned long flags;
diff --git a/include/asm-cris/atomic.h b/include/asm-cris/atomic.h
index 45891f7de00f..683b05a57d88 100644
--- a/include/asm-cris/atomic.h
+++ b/include/asm-cris/atomic.h
@@ -136,6 +136,20 @@ static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
 	return ret;
 }
 
+static inline int atomic_add_unless(atomic_t *v, int a, int u)
+{
+	int ret;
+	unsigned long flags;
+
+	cris_atomic_save(v, flags);
+	ret = v->counter;
+	if (ret != u)
+		v->counter += a;
+	cris_atomic_restore(v, flags);
+	return ret != u;
+}
+#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+
 /* Atomic operations are already serializing */
 #define smp_mb__before_atomic_dec()    barrier()
 #define smp_mb__after_atomic_dec()     barrier()
diff --git a/include/asm-frv/atomic.h b/include/asm-frv/atomic.h
index 55f06a0e949f..f6539ff569c5 100644
--- a/include/asm-frv/atomic.h
+++ b/include/asm-frv/atomic.h
@@ -416,4 +416,14 @@ extern uint32_t __cmpxchg_32(uint32_t *v, uint32_t test, uint32_t new);
 
 #define atomic_cmpxchg(v, old, new) ((int)cmpxchg(&((v)->counter), old, new))
 
+#define atomic_add_unless(v, a, u)				\
+({								\
+	int c, old;						\
+	c = atomic_read(v);					\
+	while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \
+		c = old;					\
+	c != (u);						\
+})
+#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+
 #endif /* _ASM_ATOMIC_H */
diff --git a/include/asm-h8300/atomic.h b/include/asm-h8300/atomic.h
index d50439259491..f23d86819ea8 100644
--- a/include/asm-h8300/atomic.h
+++ b/include/asm-h8300/atomic.h
@@ -95,6 +95,20 @@ static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
 	return ret;
 }
 
+static inline int atomic_add_unless(atomic_t *v, int a, int u)
+{
+	int ret;
+	unsigned long flags;
+
+	local_irq_save(flags);
+	ret = v->counter;
+	if (ret != u)
+		v->counter += a;
+	local_irq_restore(flags);
+	return ret != u;
+}
+#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+
 static __inline__ void atomic_clear_mask(unsigned long mask, unsigned long *v)
 {
 	__asm__ __volatile__("stc ccr,r1l\n\t"
diff --git a/include/asm-i386/atomic.h b/include/asm-i386/atomic.h
index 5ff698e9d2c2..c68557aa04b2 100644
--- a/include/asm-i386/atomic.h
+++ b/include/asm-i386/atomic.h
@@ -217,6 +217,25 @@ static __inline__ int atomic_sub_return(int i, atomic_t *v)
 
 #define atomic_cmpxchg(v, old, new) ((int)cmpxchg(&((v)->counter), old, new))
 
+/**
+ * atomic_add_unless - add unless the number is a given value
+ * @v: pointer of type atomic_t
+ * @a: the amount to add to v...
+ * @u: ...unless v is equal to u.
+ *
+ * Atomically adds @a to @v, so long as it was not @u.
+ * Returns non-zero if @v was not @u, and zero otherwise.
+ */
+#define atomic_add_unless(v, a, u)				\
+({								\
+	int c, old;						\
+	c = atomic_read(v);					\
+	while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \
+		c = old;					\
+	c != (u);						\
+})
+#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+
 #define atomic_inc_return(v)  (atomic_add_return(1,v))
 #define atomic_dec_return(v)  (atomic_sub_return(1,v))
 
diff --git a/include/asm-ia64/atomic.h b/include/asm-ia64/atomic.h
index 593d3da9f3c2..2fbebf85c31d 100644
--- a/include/asm-ia64/atomic.h
+++ b/include/asm-ia64/atomic.h
@@ -90,6 +90,16 @@ ia64_atomic64_sub (__s64 i, atomic64_t *v)
 
 #define atomic_cmpxchg(v, old, new) ((int)cmpxchg(&((v)->counter), old, new))
 
+#define atomic_add_unless(v, a, u)				\
+({								\
+	int c, old;						\
+	c = atomic_read(v);					\
+	while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \
+		c = old;					\
+	c != (u);						\
+})
+#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+
 #define atomic_add_return(i,v)						\
 ({									\
 	int __ia64_aar_i = (i);						\
diff --git a/include/asm-m68k/atomic.h b/include/asm-m68k/atomic.h
index b821975a361a..e3c962eeabf3 100644
--- a/include/asm-m68k/atomic.h
+++ b/include/asm-m68k/atomic.h
@@ -141,6 +141,16 @@ static inline void atomic_set_mask(unsigned long mask, unsigned long *v)
 
 #define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
 
+#define atomic_add_unless(v, a, u)				\
+({								\
+	int c, old;						\
+	c = atomic_read(v);					\
+	while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \
+		c = old;					\
+	c != (u);						\
+})
+#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+
 /* Atomic operations are already serializing */
 #define smp_mb__before_atomic_dec()	barrier()
 #define smp_mb__after_atomic_dec()	barrier()
diff --git a/include/asm-m68knommu/atomic.h b/include/asm-m68knommu/atomic.h
index 2fd33a56b603..3c1cc153c415 100644
--- a/include/asm-m68knommu/atomic.h
+++ b/include/asm-m68knommu/atomic.h
@@ -130,6 +130,16 @@ static inline int atomic_sub_return(int i, atomic_t * v)
 
 #define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
 
+#define atomic_add_unless(v, a, u)				\
+({								\
+	int c, old;						\
+	c = atomic_read(v);					\
+	while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \
+		c = old;					\
+	c != (u);						\
+})
+#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+
 #define atomic_dec_return(v) atomic_sub_return(1,(v))
 #define atomic_inc_return(v) atomic_add_return(1,(v))
 
diff --git a/include/asm-mips/atomic.h b/include/asm-mips/atomic.h
index 4fba0d003c99..2c87b41e69ba 100644
--- a/include/asm-mips/atomic.h
+++ b/include/asm-mips/atomic.h
@@ -289,6 +289,25 @@ static __inline__ int atomic_sub_if_positive(int i, atomic_t * v)
 
 #define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
 
+/**
+ * atomic_add_unless - add unless the number is a given value
+ * @v: pointer of type atomic_t
+ * @a: the amount to add to v...
+ * @u: ...unless v is equal to u.
+ *
+ * Atomically adds @a to @v, so long as it was not @u.
+ * Returns non-zero if @v was not @u, and zero otherwise.
+ */
+#define atomic_add_unless(v, a, u)				\
+({								\
+	int c, old;						\
+	c = atomic_read(v);					\
+	while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \
+		c = old;					\
+	c != (u);						\
+})
+#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+
 #define atomic_dec_return(v) atomic_sub_return(1,(v))
 #define atomic_inc_return(v) atomic_add_return(1,(v))
 
diff --git a/include/asm-parisc/atomic.h b/include/asm-parisc/atomic.h
index 52c9a45b5f87..983e9a2b6042 100644
--- a/include/asm-parisc/atomic.h
+++ b/include/asm-parisc/atomic.h
@@ -166,6 +166,25 @@ static __inline__ int atomic_read(const atomic_t *v)
 /* exported interface */
 #define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
 
+/**
+ * atomic_add_unless - add unless the number is a given value
+ * @v: pointer of type atomic_t
+ * @a: the amount to add to v...
+ * @u: ...unless v is equal to u.
+ *
+ * Atomically adds @a to @v, so long as it was not @u.
+ * Returns non-zero if @v was not @u, and zero otherwise.
+ */
+#define atomic_add_unless(v, a, u)				\
+({								\
+	int c, old;						\
+	c = atomic_read(v);					\
+	while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \
+		c = old;					\
+	c != (u);						\
+})
+#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+
 #define atomic_add(i,v)	((void)(__atomic_add_return( ((int)i),(v))))
 #define atomic_sub(i,v)	((void)(__atomic_add_return(-((int)i),(v))))
 #define atomic_inc(v)	((void)(__atomic_add_return(   1,(v))))
diff --git a/include/asm-powerpc/atomic.h b/include/asm-powerpc/atomic.h
index 37205faa9d7c..ec4b14468959 100644
--- a/include/asm-powerpc/atomic.h
+++ b/include/asm-powerpc/atomic.h
@@ -166,6 +166,31 @@ static __inline__ int atomic_dec_return(atomic_t *v)
 
 #define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
 
+/**
+ * atomic_add_unless - add unless the number is a given value
+ * @v: pointer of type atomic_t
+ * @a: the amount to add to v...
+ * @u: ...unless v is equal to u.
+ *
+ * Atomically adds @a to @v, so long as it was not @u.
+ * Returns non-zero if @v was not @u, and zero otherwise.
+ */
+#define atomic_add_unless(v, a, u)							 \
+({															 \
+	   int c, old;											 \
+	   c = atomic_read(v);									 \
+	   for (;;) {											  \
+			   if (unlikely(c == (u)))						 \
+					   break;								  \
+			   old = atomic_cmpxchg((v), c, c + (a));		  \
+			   if (likely(old == c))						   \
+					   break;								  \
+			   c = old;										\
+	   }													   \
+	   c != (u);											   \
+})
+#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+
 #define atomic_sub_and_test(a, v)	(atomic_sub_return((a), (v)) == 0)
 #define atomic_dec_and_test(v)		(atomic_dec_return((v)) == 0)
 
diff --git a/include/asm-s390/atomic.h b/include/asm-s390/atomic.h
index 631014d5de90..b3bd4f679f72 100644
--- a/include/asm-s390/atomic.h
+++ b/include/asm-s390/atomic.h
@@ -200,6 +200,16 @@ atomic_compare_and_swap(int expected_oldval,int new_val,atomic_t *v)
 
 #define atomic_cmpxchg(v, o, n) (atomic_compare_and_swap((o), (n), &((v)->counter)))
 
+#define atomic_add_unless(v, a, u)				\
+({								\
+	int c, old;						\
+	c = atomic_read(v);					\
+	while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \
+		c = old;					\
+	c != (u);						\
+})
+#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+
 #define smp_mb__before_atomic_dec()	smp_mb()
 #define smp_mb__after_atomic_dec()	smp_mb()
 #define smp_mb__before_atomic_inc()	smp_mb()
diff --git a/include/asm-sh/atomic.h b/include/asm-sh/atomic.h
index a148c762d366..aabfd334462c 100644
--- a/include/asm-sh/atomic.h
+++ b/include/asm-sh/atomic.h
@@ -101,6 +101,21 @@ static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
 	return ret;
 }
 
+static inline int atomic_add_unless(atomic_t *v, int a, int u)
+{
+	int ret;
+	unsigned long flags;
+
+	local_irq_save(flags);
+	ret = v->counter;
+	if (ret != u)
+		v->counter += a;
+	local_irq_restore(flags);
+
+	return ret != u;
+}
+#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+
 static __inline__ void atomic_clear_mask(unsigned int mask, atomic_t *v)
 {
 	unsigned long flags;
diff --git a/include/asm-sh64/atomic.h b/include/asm-sh64/atomic.h
index 6eeb57b015ce..927a2bc27b30 100644
--- a/include/asm-sh64/atomic.h
+++ b/include/asm-sh64/atomic.h
@@ -113,6 +113,21 @@ static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
 	return ret;
 }
 
+static inline int atomic_add_unless(atomic_t *v, int a, int u)
+{
+	int ret;
+	unsigned long flags;
+
+	local_irq_save(flags);
+	ret = v->counter;
+	if (ret != u)
+		v->counter += a;
+	local_irq_restore(flags);
+
+	return ret != u;
+}
+#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+
 static __inline__ void atomic_clear_mask(unsigned int mask, atomic_t *v)
 {
 	unsigned long flags;
diff --git a/include/asm-sparc/atomic.h b/include/asm-sparc/atomic.h
index 52bdd1a895fa..62bec7ad271c 100644
--- a/include/asm-sparc/atomic.h
+++ b/include/asm-sparc/atomic.h
@@ -20,6 +20,7 @@ typedef struct { volatile int counter; } atomic_t;
 
 extern int __atomic_add_return(int, atomic_t *);
 extern int atomic_cmpxchg(atomic_t *, int, int);
+extern int atomic_add_unless(atomic_t *, int, int);
 extern void atomic_set(atomic_t *, int);
 
 #define atomic_read(v)          ((v)->counter)
@@ -49,6 +50,8 @@ extern void atomic_set(atomic_t *, int);
 #define atomic_dec_and_test(v) (atomic_dec_return(v) == 0)
 #define atomic_sub_and_test(i, v) (atomic_sub_return(i, v) == 0)
 
+#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+
 /* This is the old 24-bit implementation.  It's still used internally
  * by some sparc-specific code, notably the semaphore implementation.
  */
diff --git a/include/asm-sparc64/atomic.h b/include/asm-sparc64/atomic.h
index 3a0b4383bbac..8198c3d0d007 100644
--- a/include/asm-sparc64/atomic.h
+++ b/include/asm-sparc64/atomic.h
@@ -72,6 +72,16 @@ extern int atomic64_sub_ret(int, atomic64_t *);
 
 #define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
 
+#define atomic_add_unless(v, a, u)				\
+({								\
+	int c, old;						\
+	c = atomic_read(v);					\
+	while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \
+		c = old;					\
+	c != (u);						\
+})
+#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+
 /* Atomic operations are already serializing */
 #ifdef CONFIG_SMP
 #define smp_mb__before_atomic_dec()	membar_storeload_loadload();
diff --git a/include/asm-v850/atomic.h b/include/asm-v850/atomic.h
index e497166ca42b..bede3172ce7f 100644
--- a/include/asm-v850/atomic.h
+++ b/include/asm-v850/atomic.h
@@ -104,6 +104,22 @@ static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
 	return ret;
 }
 
+static inline int atomic_add_unless(atomic_t *v, int a, int u)
+{
+	int ret;
+	unsigned long flags;
+
+	local_irq_save(flags);
+	ret = v->counter;
+	if (ret != u)
+		v->counter += a;
+	local_irq_restore(flags);
+
+	return ret != u;
+}
+
+#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+
 /* Atomic operations are already serializing on ARM */
 #define smp_mb__before_atomic_dec()	barrier()
 #define smp_mb__after_atomic_dec()	barrier()
diff --git a/include/asm-x86_64/atomic.h b/include/asm-x86_64/atomic.h
index 75c8a1e96737..0866ef67f198 100644
--- a/include/asm-x86_64/atomic.h
+++ b/include/asm-x86_64/atomic.h
@@ -362,6 +362,25 @@ static __inline__ int atomic_sub_return(int i, atomic_t *v)
 
 #define atomic_cmpxchg(v, old, new) ((int)cmpxchg(&((v)->counter), old, new))
 
+/**
+ * atomic_add_unless - add unless the number is a given value
+ * @v: pointer of type atomic_t
+ * @a: the amount to add to v...
+ * @u: ...unless v is equal to u.
+ *
+ * Atomically adds @a to @v, so long as it was not @u.
+ * Returns non-zero if @v was not @u, and zero otherwise.
+ */
+#define atomic_add_unless(v, a, u)				\
+({								\
+	int c, old;						\
+	c = atomic_read(v);					\
+	while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \
+		c = old;					\
+	c != (u);						\
+})
+#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+
 #define atomic_inc_return(v)  (atomic_add_return(1,v))
 #define atomic_dec_return(v)  (atomic_sub_return(1,v))
 
diff --git a/include/asm-xtensa/atomic.h b/include/asm-xtensa/atomic.h
index cd40c5e75160..3670cc7695da 100644
--- a/include/asm-xtensa/atomic.h
+++ b/include/asm-xtensa/atomic.h
@@ -225,6 +225,25 @@ static inline int atomic_sub_return(int i, atomic_t * v)
 
 #define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
 
+/**
+ * atomic_add_unless - add unless the number is a given value
+ * @v: pointer of type atomic_t
+ * @a: the amount to add to v...
+ * @u: ...unless v is equal to u.
+ *
+ * Atomically adds @a to @v, so long as it was not @u.
+ * Returns non-zero if @v was not @u, and zero otherwise.
+ */
+#define atomic_add_unless(v, a, u)				\
+({								\
+	int c, old;						\
+	c = atomic_read(v);					\
+	while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \
+		c = old;					\
+	c != (u);						\
+})
+#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+
 static inline void atomic_clear_mask(unsigned int mask, atomic_t *v)
 {
     unsigned int all_f = -1;
-- 
cgit v1.2.3


From 36174494b64ec0f6c2593af12d1cec97c9754192 Mon Sep 17 00:00:00 2001
From: Diego Calleja <diegocg@gmail.com>
Date: Sun, 13 Nov 2005 16:07:40 -0800
Subject: [PATCH] oops-tracing: mention digital photos

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 Documentation/oops-tracing.txt | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'Documentation')

diff --git a/Documentation/oops-tracing.txt b/Documentation/oops-tracing.txt
index c563842ed805..9f30ac6ca47b 100644
--- a/Documentation/oops-tracing.txt
+++ b/Documentation/oops-tracing.txt
@@ -30,7 +30,9 @@ the disk is not available then you have three options :-
 
 (1) Hand copy the text from the screen and type it in after the machine
     has restarted.  Messy but it is the only option if you have not
-    planned for a crash.
+    planned for a crash. Alternatively, you can take a picture of
+    the screen with a digital camera - not nice, but better than
+    nothing.
 
 (2) Boot with a serial console (see Documentation/serial-console.txt),
     run a null modem to a second machine and capture the output there
-- 
cgit v1.2.3


From 633323ffffae91c3f22a08e0185fbfd3fae2a825 Mon Sep 17 00:00:00 2001
From: Bill Pechter <pechter@gmail.com>
Date: Sun, 13 Nov 2005 16:07:50 -0800
Subject: [PATCH] v4l:: (936) Support for sabrent bt848 version

Support for Sabrent bt848 version.

Signed-off-by: Bill Pechter <pechter@gmail.com>
Signed-off-by: Nickolay V. Shmyrev <nshmyrev@yandex.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 Documentation/video4linux/CARDLIST.bttv  |  1 +
 Documentation/video4linux/CARDLIST.tuner |  1 +
 drivers/media/video/bttv-cards.c         | 19 ++++++++++++++++++-
 drivers/media/video/bttv.h               |  1 +
 drivers/media/video/tuner-simple.c       |  4 +++-
 include/media/tuner.h                    |  1 +
 6 files changed, 25 insertions(+), 2 deletions(-)

(limited to 'Documentation')

diff --git a/Documentation/video4linux/CARDLIST.bttv b/Documentation/video4linux/CARDLIST.bttv
index 2404099996ac..330246ac80f8 100644
--- a/Documentation/video4linux/CARDLIST.bttv
+++ b/Documentation/video4linux/CARDLIST.bttv
@@ -140,3 +140,4 @@
 139 -> Prolink PixelView PlayTV MPEG2 PV-M4900
 140 -> Osprey 440                                          [0070:ff07]
 141 -> Asound Skyeye PCTV
+142 -> Sabrent TV-FM (bttv version)
diff --git a/Documentation/video4linux/CARDLIST.tuner b/Documentation/video4linux/CARDLIST.tuner
index ec840ca6f455..9d6544ea9f41 100644
--- a/Documentation/video4linux/CARDLIST.tuner
+++ b/Documentation/video4linux/CARDLIST.tuner
@@ -67,3 +67,4 @@ tuner=65 - Ymec TVF66T5-B/DFF
 tuner=66 - LG NTSC (TALN mini series)
 tuner=67 - Philips TD1316 Hybrid Tuner
 tuner=68 - Philips TUV1236D ATSC/NTSC dual in
+tuner=69 - Tena TNF 5335 MF
diff --git a/drivers/media/video/bttv-cards.c b/drivers/media/video/bttv-cards.c
index 3413bace443a..66ed9ea64180 100644
--- a/drivers/media/video/bttv-cards.c
+++ b/drivers/media/video/bttv-cards.c
@@ -2796,7 +2796,24 @@ struct tvcard bttv_tvcards[] = {
 		.tuner_addr	= ADDR_UNSET,
 		.radio_addr     = ADDR_UNSET,
 	},
-
+		/* ---- card 0x8e ---------------------------------- */
+	[BTTV_BOARD_SABRENT_TVFM] = {
+		.name		= "Sabrent TV-FM (bttv version)",
+		.video_inputs	= 3,
+		.audio_inputs	= 1,
+		.tuner		= 0,
+		.svhs		= 2,
+		.gpiomask	= 0x108007,
+		.muxsel		= { 2, 3, 1, 1},
+		.audiomux	= { 100000, 100002, 100002, 100000},
+		.no_msp34xx	= 1,
+		.no_tda9875     = 1,
+		.no_tda7432     = 1,
+		.pll		= PLL_28,
+		.tuner_type	= TUNER_TNF_5335MF,
+		.tuner_addr	= ADDR_UNSET,
+		.has_radio      = 1,
+	},
 };
 
 static const unsigned int bttv_num_tvcards = ARRAY_SIZE(bttv_tvcards);
diff --git a/drivers/media/video/bttv.h b/drivers/media/video/bttv.h
index 124ea41dada4..c1825248beb5 100644
--- a/drivers/media/video/bttv.h
+++ b/drivers/media/video/bttv.h
@@ -162,6 +162,7 @@
 #define BTTV_BOARD_PV_M4900                0x8b
 #define BTTV_BOARD_OSPREY440               0x8c
 #define BTTV_BOARD_ASOUND_SKYEYE	   0x8d
+#define BTTV_BOARD_SABRENT_TVFM   	   0x8e
 
 /* i2c address list */
 #define I2C_TSA5522        0xc2
diff --git a/drivers/media/video/tuner-simple.c b/drivers/media/video/tuner-simple.c
index d832205818f2..e0c9fdb9914a 100644
--- a/drivers/media/video/tuner-simple.c
+++ b/drivers/media/video/tuner-simple.c
@@ -233,7 +233,7 @@ static struct tunertype tuners[] = {
 	{ "Ymec TVision TVF-5533MF", Philips, NTSC,
 	  16*160.00,16*454.00,0x01,0x02,0x04,0x8e,732},
 
-	/* 60-68 */
+	/* 60-69 */
 	{ "Thomson DDT 7611 (ATSC/NTSC)", THOMSON, ATSC,
 	  16*157.25,16*454.00,0x39,0x3a,0x3c,0x8e,732},
 	{ "Tena TNF9533-D/IF/TNF9533-B/DF", Philips, PAL,
@@ -252,6 +252,8 @@ static struct tunertype tuners[] = {
 	  16*160.00,16*442.00,0xa1,0xa2,0xa4,0xc8,623 },
 	{ "Philips TUV1236D ATSC/NTSC dual in", Philips, ATSC,
 	  16*157.25,16*454.00,0x01,0x02,0x04,0xce,732 },
+	{ "Tena TNF 5335 MF", Philips, NTSC,
+	  16*157.25,16*454.00,0x01,0x02,0x04,0x8e,732 },
 };
 
 unsigned const int tuner_count = ARRAY_SIZE(tuners);
diff --git a/include/media/tuner.h b/include/media/tuner.h
index 9184e534b7ef..faa0f8e3091b 100644
--- a/include/media/tuner.h
+++ b/include/media/tuner.h
@@ -113,6 +113,7 @@
 #define TUNER_PHILIPS_TD1316		67
 
 #define TUNER_PHILIPS_TUV1236D		68	/* ATI HDTV Wonder */
+#define TUNER_TNF_5335MF                69	/* Sabrent Bt848   */
 
 #define NOTUNER 0
 #define PAL     1	/* PAL_BG */
-- 
cgit v1.2.3


From 80d2ad9259b04bc46556c1cd8cec558a02460a2d Mon Sep 17 00:00:00 2001
From: Ricardo Cerqueira <v4l@cerqueira.org>
Date: Sun, 13 Nov 2005 16:08:01 -0800
Subject: [PATCH] v4l: (962) Added new saa7134 card (MSI TV@anywhere plus)

Added new saa7134 card (MSI TV@anywhere plus)

Signed-off-by: Ricardo Cerqueira <v4l@cerqueira.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 Documentation/video4linux/CARDLIST.saa7134  |  2 ++
 drivers/media/video/saa7134/saa7134-cards.c | 32 +++++++++++++++++++++++++++++
 drivers/media/video/saa7134/saa7134.h       |  1 +
 3 files changed, 35 insertions(+)

(limited to 'Documentation')

diff --git a/Documentation/video4linux/CARDLIST.saa7134 b/Documentation/video4linux/CARDLIST.saa7134
index 57c9d631db56..efb708ec116a 100644
--- a/Documentation/video4linux/CARDLIST.saa7134
+++ b/Documentation/video4linux/CARDLIST.saa7134
@@ -80,3 +80,5 @@
  79 -> Sedna/MuchTV PC TV Cardbus TV/Radio (ITO25 Rev:2B)
  80 -> ASUS Digimatrix TV                       [1043:0210]
  81 -> Philips Tiger reference design           [1131:2018]
+ 82 -> MSI TV@Anywhere plus                     [1462:6231]
+
diff --git a/drivers/media/video/saa7134/saa7134-cards.c b/drivers/media/video/saa7134/saa7134-cards.c
index 663d03e5bc67..75abc20b0ccd 100644
--- a/drivers/media/video/saa7134/saa7134-cards.c
+++ b/drivers/media/video/saa7134/saa7134-cards.c
@@ -2529,6 +2529,32 @@ struct saa7134_board saa7134_boards[] = {
 			.amux   = LINE1,
 		}},
 	},
+	[SAA7134_BOARD_MSI_TVATANYWHERE_PLUS] = {
+		.name           = "MSI TV@Anywhere plus",
+		.audio_clock    = 0x00187de7,
+		.tuner_type     = TUNER_PHILIPS_TDA8290,
+		.radio_type     = UNSET,
+		.tuner_addr	= ADDR_UNSET,
+		.radio_addr	= ADDR_UNSET,
+		.inputs = {{
+			.name   = name_tv,
+			.vmux   = 1,
+			.amux   = TV,
+			.tv     = 1,
+		},{
+			.name   = name_comp1,
+			.vmux   = 3,
+			.amux   = LINE1,
+		},{
+			.name   = name_svideo,
+			.vmux   = 0,
+			.amux   = LINE1,
+		}},
+		.radio = {
+			.name   = name_radio,
+			.amux   = LINE1,
+		},
+	},
 };
 
 const unsigned int saa7134_bcount = ARRAY_SIZE(saa7134_boards);
@@ -2969,6 +2995,12 @@ struct pci_device_id saa7134_pci_tbl[] = {
 		.subvendor    = PCI_VENDOR_ID_PHILIPS,
 		.subdevice    = 0x2018,
 		.driver_data  = SAA7134_BOARD_PHILIPS_TIGER,
+	},{
+		.vendor       = PCI_VENDOR_ID_PHILIPS,
+		.device       = PCI_DEVICE_ID_PHILIPS_SAA7133,
+		.subvendor    = 0x1462,
+		.subdevice    = 0x6231,
+		.driver_data  = SAA7134_BOARD_MSI_TVATANYWHERE_PLUS,
 	},{
 		/* --- boards without eeprom + subsystem ID --- */
 		.vendor       = PCI_VENDOR_ID_PHILIPS,
diff --git a/drivers/media/video/saa7134/saa7134.h b/drivers/media/video/saa7134/saa7134.h
index 85ba30978e84..244e1973081c 100644
--- a/drivers/media/video/saa7134/saa7134.h
+++ b/drivers/media/video/saa7134/saa7134.h
@@ -208,6 +208,7 @@ struct saa7134_format {
 #define SAA7134_BOARD_SEDNA_PC_TV_CARDBUS     79
 #define SAA7134_BOARD_ASUSTEK_DIGIMATRIX_TV 80
 #define SAA7134_BOARD_PHILIPS_TIGER  81
+#define SAA7134_BOARD_MSI_TVATANYWHERE_PLUS  82
 
 #define SAA7134_MAXBOARDS 8
 #define SAA7134_INPUT_MAX 8
-- 
cgit v1.2.3


From ddad86c2d6f660112c6ce8aabae6ffd346e25b9b Mon Sep 17 00:00:00 2001
From: Martin Waitz <tali@admingilde.org>
Date: Sun, 13 Nov 2005 16:08:14 -0800
Subject: [PATCH] DocBook: include printk documentation

Add printk documentation to kernel-api.

Signed-off-by: Martin Waitz <tali@admingilde.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 Documentation/DocBook/kernel-api.tmpl |  4 +---
 kernel/printk.c                       | 16 ++++++++++++++--
 2 files changed, 15 insertions(+), 5 deletions(-)

(limited to 'Documentation')

diff --git a/Documentation/DocBook/kernel-api.tmpl b/Documentation/DocBook/kernel-api.tmpl
index a8316b1a3e3d..0519c9dc0065 100644
--- a/Documentation/DocBook/kernel-api.tmpl
+++ b/Documentation/DocBook/kernel-api.tmpl
@@ -68,9 +68,7 @@ X!Iinclude/linux/kobject.h
 
      <sect1><title>Kernel utility functions</title>
 !Iinclude/linux/kernel.h
-<!-- This needs to clean up to make kernel-doc happy
-X!Ekernel/printk.c
- -->
+!Ekernel/printk.c
 !Ekernel/panic.c
 !Ekernel/sys.c
 !Ekernel/rcupdate.c
diff --git a/kernel/printk.c b/kernel/printk.c
index e9be027bc930..ac8a08f36207 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -491,7 +491,10 @@ __attribute__((weak)) unsigned long long printk_clock(void)
 	return sched_clock();
 }
 
-/*
+/**
+ * printk - print a kernel message
+ * @fmt: format string
+ *
  * This is printk.  It can be called from any context.  We want it to work.
  *
  * We try to grab the console_sem.  If we succeed, it's easy - we log the output and
@@ -503,6 +506,9 @@ __attribute__((weak)) unsigned long long printk_clock(void)
  * One effect of this deferred printing is that code which calls printk() and
  * then changes console_loglevel may break. This is because console_loglevel
  * is inspected when the actual printing occurs.
+ *
+ * See also:
+ * printf(3)
  */
 
 asmlinkage int printk(const char *fmt, ...)
@@ -655,6 +661,9 @@ static void call_console_drivers(unsigned long start, unsigned long end)
 
 /**
  * add_preferred_console - add a device to the list of preferred consoles.
+ * @name: device name
+ * @idx: device index
+ * @options: options for this console
  *
  * The last preferred console added will be used for kernel messages
  * and stdin/out/err for init.  Normally this is used by console_setup
@@ -764,7 +773,8 @@ void release_console_sem(void)
 }
 EXPORT_SYMBOL(release_console_sem);
 
-/** console_conditional_schedule - yield the CPU if required
+/**
+ * console_conditional_schedule - yield the CPU if required
  *
  * If the console code is currently allowed to sleep, and
  * if this CPU should yield the CPU to another task, do
@@ -976,6 +986,8 @@ EXPORT_SYMBOL(unregister_console);
 
 /**
  * tty_write_message - write a message to a certain tty, not just the console.
+ * @tty: the destination tty_struct
+ * @msg: the message to write
  *
  * This is used for messages that need to be redirected to a specific tty.
  * We don't put it into the syslog queue right now maybe in the future if
-- 
cgit v1.2.3


From e56367fe70955beb82e5e7c71ccfa064add42c21 Mon Sep 17 00:00:00 2001
From: Martin Waitz <tali@admingilde.org>
Date: Sun, 13 Nov 2005 16:08:15 -0800
Subject: [PATCH] DocBook: comment about paper type

Add a comment showing how to change paper type.

Signed-off-by: Martin Waitz <tali@admingilde.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 Documentation/DocBook/stylesheet.xsl | 1 +
 1 file changed, 1 insertion(+)

(limited to 'Documentation')

diff --git a/Documentation/DocBook/stylesheet.xsl b/Documentation/DocBook/stylesheet.xsl
index 64be9f7ee3bb..3ccce886c349 100644
--- a/Documentation/DocBook/stylesheet.xsl
+++ b/Documentation/DocBook/stylesheet.xsl
@@ -3,4 +3,5 @@
 <param name="chunk.quietly">1</param>
 <param name="funcsynopsis.style">ansi</param>
 <param name="funcsynopsis.tabular.threshold">80</param>
+<!-- <param name="paper.type">A4</param> -->
 </stylesheet>
-- 
cgit v1.2.3


From 71f95cfbcfc31ba0d002ddb6e37ca5a0b5eaf02c Mon Sep 17 00:00:00 2001
From: Martin Waitz <tali@admingilde.org>
Date: Sun, 13 Nov 2005 16:08:15 -0800
Subject: [PATCH] DocBook: revert xmlto use for .ps and .pdf documentation

As xmlto doesn't work for print documentation, we need docbook-utils again for
these targets.

This patch allows the user to choose the method he wants to use.  (I'm still
hoping that someone will fix passivetex ;-)

Signed-off-by: Martin Waitz <tali@admingilde.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 Documentation/DocBook/Makefile | 48 +++++++++++++++++++++++++++++-------------
 1 file changed, 33 insertions(+), 15 deletions(-)

(limited to 'Documentation')

diff --git a/Documentation/DocBook/Makefile b/Documentation/DocBook/Makefile
index 7018f5c6a447..1c955883cf58 100644
--- a/Documentation/DocBook/Makefile
+++ b/Documentation/DocBook/Makefile
@@ -20,6 +20,12 @@ DOCBOOKS := wanbook.xml z8530book.xml mcabook.xml videobook.xml \
 #                        +--> DIR=file  (htmldocs)
 #                        +--> man/      (mandocs)
 
+
+# for PDF and PS output you can choose between xmlto and docbook-utils tools
+PDF_METHOD	= $(prefer-db2x)
+PS_METHOD	= $(prefer-db2x)
+
+
 ###
 # The targets that may be used.
 .PHONY:	xmldocs sgmldocs psdocs pdfdocs htmldocs mandocs installmandocs
@@ -93,27 +99,39 @@ C-procfs-example = procfs_example.xml
 C-procfs-example2 = $(addprefix $(obj)/,$(C-procfs-example))
 $(obj)/procfs-guide.xml: $(C-procfs-example2)
 
-###
-# Rules to generate postscript, PDF and HTML
-# db2html creates a directory. Generate a html file used for timestamp
+notfoundtemplate = echo "*** You have to install docbook-utils or xmlto ***"; \
+		   exit 1
+db2xtemplate = db2TYPE -o $(dir $@) $<
+xmltotemplate = xmlto TYPE $(XMLTOFLAGS) -o $(dir $@) $<
+
+# determine which methods are available
+ifeq ($(shell which db2ps >/dev/null 2>&1 && echo found),found)
+	use-db2x = db2x
+	prefer-db2x = db2x
+else
+	use-db2x = notfound
+	prefer-db2x = $(use-xmlto)
+endif
+ifeq ($(shell which xmlto >/dev/null 2>&1 && echo found),found)
+	use-xmlto = xmlto
+	prefer-xmlto = xmlto
+else
+	use-xmlto = notfound
+	prefer-xmlto = $(use-db2x)
+endif
 
-quiet_cmd_db2ps = XMLTO    $@
-      cmd_db2ps = xmlto ps $(XMLTOFLAGS) -o $(dir $@) $<
+# the commands, generated from the chosen template
+quiet_cmd_db2ps = PS      $@
+      cmd_db2ps = $(subst TYPE,ps, $($(PS_METHOD)template))
 %.ps : %.xml
-	@(which xmlto > /dev/null 2>&1) || \
-	 (echo "*** You need to install xmlto ***"; \
-	  exit 1)
 	$(call cmd,db2ps)
 
-quiet_cmd_db2pdf = XMLTO   $@
-      cmd_db2pdf = xmlto pdf $(XMLTOFLAGS) -o $(dir $@) $<
+quiet_cmd_db2pdf = PDF      $@
+      cmd_db2pdf = $(subst TYPE,pdf, $($(PDF_METHOD)template))
 %.pdf : %.xml
-	@(which xmlto > /dev/null 2>&1) || \
-	 (echo "*** You need to install xmlto ***"; \
-	  exit 1)
 	$(call cmd,db2pdf)
 
-quiet_cmd_db2html = XMLTO  $@
+quiet_cmd_db2html = HTML   $@
       cmd_db2html = xmlto xhtml $(XMLTOFLAGS) -o $(patsubst %.html,%,$@) $< && \
 		echo '<a HREF="$(patsubst %.html,%,$(notdir $@))/index.html"> \
          Goto $(patsubst %.html,%,$(notdir $@))</a><p>' > $@
@@ -127,7 +145,7 @@ quiet_cmd_db2html = XMLTO  $@
 	@if [ ! -z "$(PNG-$(basename $(notdir $@)))" ]; then \
             cp $(PNG-$(basename $(notdir $@))) $(patsubst %.html,%,$@); fi
 
-quiet_cmd_db2man = XMLTO   $@
+quiet_cmd_db2man = MAN     $@
       cmd_db2man = if grep -q refentry $<; then xmlto man $(XMLTOFLAGS) -o $(obj)/man $< ; gzip -f $(obj)/man/*.9; fi
 %.9 : %.xml
 	@(which xmlto > /dev/null 2>&1) || \
-- 
cgit v1.2.3


From 8315eca25583c369e28f48909d3341dc21d6214d Mon Sep 17 00:00:00 2001
From: Andi Kleen <ak@suse.de>
Date: Sat, 5 Nov 2005 17:25:54 +0100
Subject: [PATCH] x86_64: Some clarifications for Documention/x86_64/mm.txt

I got some questions on this, so just fix up the documentation.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 Documentation/x86_64/mm.txt | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'Documentation')

diff --git a/Documentation/x86_64/mm.txt b/Documentation/x86_64/mm.txt
index 662b73971a67..133561b9cb0c 100644
--- a/Documentation/x86_64/mm.txt
+++ b/Documentation/x86_64/mm.txt
@@ -6,7 +6,7 @@ Virtual memory map with 4 level page tables:
 0000000000000000 - 00007fffffffffff (=47bits) user space, different per mm
 hole caused by [48:63] sign extension
 ffff800000000000 - ffff80ffffffffff (=40bits) guard hole
-ffff810000000000 - ffffc0ffffffffff (=46bits) direct mapping of phys. memory
+ffff810000000000 - ffffc0ffffffffff (=46bits) direct mapping of all phys. memory
 ffffc10000000000 - ffffc1ffffffffff (=40bits) hole
 ffffc20000000000 - ffffe1ffffffffff (=45bits) vmalloc/ioremap space
 ... unused hole ...
@@ -14,6 +14,10 @@ ffffffff80000000 - ffffffff82800000 (=40MB)   kernel text mapping, from phys 0
 ... unused hole ...
 ffffffff88000000 - fffffffffff00000 (=1919MB) module mapping space
 
+The direct mapping covers all memory in the system upto the highest
+memory address (this means in some cases it can also include PCI memory
+holes)
+
 vmalloc space is lazily synchronized into the different PML4 pages of
 the processes using the page fault handler, with init_level4_pgt as
 reference.
-- 
cgit v1.2.3


From 420f8f68c9c5148dddf946bebdbc7eacde2172cb Mon Sep 17 00:00:00 2001
From: Andi Kleen <ak@suse.de>
Date: Sat, 5 Nov 2005 17:25:54 +0100
Subject: [PATCH] x86_64: New heuristics to find out hotpluggable CPUs.

With a NR_CPUS==128 kernel with CPU hotplug enabled we would waste 4MB
on per CPU data of all possible CPUs.  The reason was that HOTPLUG
always set up possible map to NR_CPUS cpus and then we need to allocate
that much (each per CPU data is roughly ~32k now)

The underlying problem is that ACPI didn't tell us how many hotplug CPUs
the platform supports.  So the old code just assumed all, which would
lead to this memory wastage.

This implements some new heuristics:

 - If the BIOS specified disabled CPUs in the ACPI/mptables assume they
   can be enabled later (this is bending the ACPI specification a bit,
   but seems like a obvious extension)
 - The user can overwrite it with a new additionals_cpus=NUM option
 - Otherwise use half of the available CPUs or 2, whatever is more.

Cc: ashok.raj@intel.com
Cc: len.brown@intel.com

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 Documentation/x86_64/boot-options.txt |  3 +++
 arch/x86_64/kernel/mpparse.c          |  8 +++++--
 arch/x86_64/kernel/smpboot.c          | 39 ++++++++++++++++++++++++++++++++---
 include/asm-x86_64/smp.h              |  2 ++
 4 files changed, 47 insertions(+), 5 deletions(-)

(limited to 'Documentation')

diff --git a/Documentation/x86_64/boot-options.txt b/Documentation/x86_64/boot-options.txt
index ffe1c062088b..a83139692cdf 100644
--- a/Documentation/x86_64/boot-options.txt
+++ b/Documentation/x86_64/boot-options.txt
@@ -122,6 +122,9 @@ SMP
 
   cpumask=MASK   only use cpus with bits set in mask
 
+  additional_cpus=NUM Allow NUM more CPUs for hotplug
+		 (defaults are specified by the BIOS or half the available CPUs)
+
 NUMA
 
   numa=off	Only set up a single NUMA node spanning all memory.
diff --git a/arch/x86_64/kernel/mpparse.c b/arch/x86_64/kernel/mpparse.c
index 4a581d1cefbd..1d61f10a92c6 100644
--- a/arch/x86_64/kernel/mpparse.c
+++ b/arch/x86_64/kernel/mpparse.c
@@ -65,7 +65,9 @@ unsigned long mp_lapic_addr = 0;
 /* Processor that is doing the boot up */
 unsigned int boot_cpu_id = -1U;
 /* Internal processor count */
-static unsigned int num_processors = 0;
+unsigned int num_processors __initdata = 0;
+
+unsigned disabled_cpus __initdata;
 
 /* Bitmask of physically existing CPUs */
 physid_mask_t phys_cpu_present_map = PHYSID_MASK_NONE;
@@ -109,8 +111,10 @@ static void __init MP_processor_info (struct mpc_config_processor *m)
 	int ver, cpu;
 	static int found_bsp=0;
 
-	if (!(m->mpc_cpuflag & CPU_ENABLED))
+	if (!(m->mpc_cpuflag & CPU_ENABLED)) {
+		disabled_cpus++;
 		return;
+	}
 
 	printk(KERN_INFO "Processor #%d %d:%d APIC version %d\n",
 		m->mpc_apicid,
diff --git a/arch/x86_64/kernel/smpboot.c b/arch/x86_64/kernel/smpboot.c
index 3393fc08823b..f74319a80659 100644
--- a/arch/x86_64/kernel/smpboot.c
+++ b/arch/x86_64/kernel/smpboot.c
@@ -880,6 +880,9 @@ static __init void disable_smp(void)
 }
 
 #ifdef CONFIG_HOTPLUG_CPU
+
+int additional_cpus __initdata = -1;
+
 /*
  * cpu_possible_map should be static, it cannot change as cpu's
  * are onlined, or offlined. The reason is per-cpu data-structures
@@ -888,14 +891,38 @@ static __init void disable_smp(void)
  * cpu_present_map on the other hand can change dynamically.
  * In case when cpu_hotplug is not compiled, then we resort to current
  * behaviour, which is cpu_possible == cpu_present.
- * If cpu-hotplug is supported, then we need to preallocate for all
- * those NR_CPUS, hence cpu_possible_map represents entire NR_CPUS range.
  * - Ashok Raj
+ *
+ * Three ways to find out the number of additional hotplug CPUs:
+ * - If the BIOS specified disabled CPUs in ACPI/mptables use that.
+ * - otherwise use half of the available CPUs or 2, whatever is more.
+ * - The user can overwrite it with additional_cpus=NUM
+ * We do this because additional CPUs waste a lot of memory.
+ * -AK
  */
 __init void prefill_possible_map(void)
 {
 	int i;
-	for (i = 0; i < NR_CPUS; i++)
+	int possible;
+
+ 	if (additional_cpus == -1) {
+ 		if (disabled_cpus > 0) {
+ 			additional_cpus = disabled_cpus;
+ 		} else {
+ 			additional_cpus = num_processors / 2;
+ 			if (additional_cpus == 0)
+ 				additional_cpus = 2;
+ 		}
+ 	}
+	possible = num_processors + additional_cpus;
+	if (possible > NR_CPUS) 
+		possible = NR_CPUS;
+
+	printk(KERN_INFO "SMP: Allowing %d CPUs, %d hotplug CPUs\n",
+		possible,
+	        max_t(int, possible - num_processors, 0));
+
+	for (i = 0; i < possible; i++)
 		cpu_set(i, cpu_possible_map);
 }
 #endif
@@ -1151,6 +1178,12 @@ void __cpu_die(unsigned int cpu)
  	printk(KERN_ERR "CPU %u didn't die...\n", cpu);
 }
 
+static __init int setup_additional_cpus(char *s)
+{
+	return get_option(&s, &additional_cpus);
+}
+__setup("additional_cpus=", setup_additional_cpus);
+
 #else /* ... !CONFIG_HOTPLUG_CPU */
 
 int __cpu_disable(void)
diff --git a/include/asm-x86_64/smp.h b/include/asm-x86_64/smp.h
index 592161e979e5..cf8f969f9020 100644
--- a/include/asm-x86_64/smp.h
+++ b/include/asm-x86_64/smp.h
@@ -81,6 +81,8 @@ extern int safe_smp_processor_id(void);
 extern int __cpu_disable(void);
 extern void __cpu_die(unsigned int cpu);
 extern void prefill_possible_map(void);
+extern unsigned num_processors;
+extern unsigned disabled_cpus;
 
 #endif /* !ASSEMBLY */
 
-- 
cgit v1.2.3


From e583538f077d5f70191670b47a046ba436ec3428 Mon Sep 17 00:00:00 2001
From: Andi Kleen <ak@suse.de>
Date: Sat, 5 Nov 2005 17:25:54 +0100
Subject: [PATCH] x86_64: Log machine checks from boot on Intel systems

The logging for boot errors was turned off because it was broken
on some AMD systems. But give Intel EM64T systems a chance because they are
supposed to be correct there.

The advantage is that there is a chance to actually log uncorrected
machine checks after the reset.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 Documentation/x86_64/boot-options.txt |  6 ++++--
 arch/x86_64/kernel/mce.c              | 14 +++++++++-----
 2 files changed, 13 insertions(+), 7 deletions(-)

(limited to 'Documentation')

diff --git a/Documentation/x86_64/boot-options.txt b/Documentation/x86_64/boot-options.txt
index a83139692cdf..aaabb5883ab8 100644
--- a/Documentation/x86_64/boot-options.txt
+++ b/Documentation/x86_64/boot-options.txt
@@ -7,10 +7,12 @@ Machine check
 
    mce=off disable machine check
    mce=bootlog Enable logging of machine checks left over from booting.
-               Disabled by default because some BIOS leave bogus ones.
+               Disabled by default on AMD because some BIOS leave bogus ones.
                If your BIOS doesn't do that it's a good idea to enable though
                to make sure you log even machine check events that result
-               in a reboot.
+               in a reboot. On Intel systems it is enabled by default.
+   mce=nobootlog
+		Disable boot machine check logging.
    mce=tolerancelevel (number)
 		0: always panic, 1: panic if deadlock possible,
 		2: try to avoid panic, 3: never panic or exit (for testing)
diff --git a/arch/x86_64/kernel/mce.c b/arch/x86_64/kernel/mce.c
index cf8a76f0f47e..183dc6105429 100644
--- a/arch/x86_64/kernel/mce.c
+++ b/arch/x86_64/kernel/mce.c
@@ -37,7 +37,7 @@ static unsigned long bank[NR_BANKS] = { [0 ... NR_BANKS-1] = ~0UL };
 static unsigned long console_logged;
 static int notify_user;
 static int rip_msr;
-static int mce_bootlog;
+static int mce_bootlog = 1;
 
 /*
  * Lockless MCE logging infrastructure.
@@ -347,7 +347,11 @@ static void __cpuinit mce_cpu_quirks(struct cpuinfo_x86 *c)
 		/* disable GART TBL walk error reporting, which trips off 
 		   incorrectly with the IOMMU & 3ware & Cerberus. */
 		clear_bit(10, &bank[4]);
+		/* Lots of broken BIOS around that don't clear them
+		   by default and leave crap in there. Don't log. */
+		mce_bootlog = 0;
 	}
+
 }			
 
 static void __cpuinit mce_cpu_features(struct cpuinfo_x86 *c)
@@ -498,16 +502,16 @@ static int __init mcheck_disable(char *str)
 /* mce=off disables machine check. Note you can reenable it later
    using sysfs.
    mce=TOLERANCELEVEL (number, see above)
-   mce=bootlog Log MCEs from before booting. Disabled by default to work
-   around buggy BIOS that leave bogus MCEs.  */
+   mce=bootlog Log MCEs from before booting. Disabled by default on AMD.
+   mce=nobootlog Don't log MCEs from before booting. */
 static int __init mcheck_enable(char *str)
 {
 	if (*str == '=')
 		str++;
 	if (!strcmp(str, "off"))
 		mce_dont_init = 1;
-	else if (!strcmp(str, "bootlog"))
-		mce_bootlog = 1;
+	else if (!strcmp(str, "bootlog") || !strcmp(str,"nobootlog"))
+		mce_bootlog = str[0] == 'b';
 	else if (isdigit(str[0]))
 		get_option(&str, &tolerant);
 	else
-- 
cgit v1.2.3


From 9e43e1b7c7c9872da032442d8e4bb112a02d16f4 Mon Sep 17 00:00:00 2001
From: Andi Kleen <ak@suse.de>
Date: Sat, 5 Nov 2005 17:25:54 +0100
Subject: [PATCH] x86_64: Remove CONFIG_CHECKING and add command line option
 for pagefault tracing

CONFIG_CHECKING covered some debugging code used in the early times
of the port. But it wasn't even SMP safe for quite some time
and the bugs it checked for seem to be gone.

This patch removes all the code to verify GS at kernel entry. There
haven't been any new bugs in this area for a long time.

Previously it also covered the sysctl for the page fault tracing.
That didn't make much sense because that code was unconditionally
compiled in. I made that a boot option now because it is typically
only useful at boot.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 Documentation/x86_64/boot-options.txt |  3 +++
 arch/x86_64/Kconfig.debug             |  9 --------
 arch/x86_64/kernel/traps.c            | 40 -----------------------------------
 arch/x86_64/mm/fault.c                | 19 ++++++-----------
 arch/x86_64/mm/init.c                 |  4 ----
 5 files changed, 10 insertions(+), 65 deletions(-)

(limited to 'Documentation')

diff --git a/Documentation/x86_64/boot-options.txt b/Documentation/x86_64/boot-options.txt
index aaabb5883ab8..e566affeed7f 100644
--- a/Documentation/x86_64/boot-options.txt
+++ b/Documentation/x86_64/boot-options.txt
@@ -193,6 +193,9 @@ Debugging
 
   kstack=N   Print that many words from the kernel stack in oops dumps.
 
+  pagefaulttrace Dump all page faults. Only useful for extreme debugging
+		and will create a lot of output.
+
 Misc
 
   noreplacement  Don't replace instructions with more appropiate ones
diff --git a/arch/x86_64/Kconfig.debug b/arch/x86_64/Kconfig.debug
index 9cf1410d2f5a..3ccf6f4d1068 100644
--- a/arch/x86_64/Kconfig.debug
+++ b/arch/x86_64/Kconfig.debug
@@ -2,15 +2,6 @@ menu "Kernel hacking"
 
 source "lib/Kconfig.debug"
 
-# !SMP for now because the context switch early causes GPF in segment reloading
-# and the GS base checking does the wrong thing then, causing a hang.
-config CHECKING
-	bool "Additional run-time checks"
-	depends on DEBUG_KERNEL && !SMP
-	help
-	  Enables some internal consistency checks for kernel debugging.
-	  You should normally say N.
-
 config INIT_DEBUG
 	bool "Debug __init statements"
 	depends on DEBUG_KERNEL
diff --git a/arch/x86_64/kernel/traps.c b/arch/x86_64/kernel/traps.c
index 4a836384dd0f..bf337f493189 100644
--- a/arch/x86_64/kernel/traps.c
+++ b/arch/x86_64/kernel/traps.c
@@ -428,19 +428,6 @@ static void __kprobes do_trap(int trapnr, int signr, char *str,
 {
 	conditional_sti(regs);
 
-#ifdef CONFIG_CHECKING
-       { 
-               unsigned long gs; 
-               struct x8664_pda *pda = cpu_pda + safe_smp_processor_id(); 
-               rdmsrl(MSR_GS_BASE, gs); 
-               if (gs != (unsigned long)pda) { 
-                       wrmsrl(MSR_GS_BASE, pda); 
-                       printk("%s: wrong gs %lx expected %p rip %lx\n", str, gs, pda,
-			      regs->rip);
-               }
-       }
-#endif
-
 	if (user_mode(regs)) {
 		struct task_struct *tsk = current;
 
@@ -513,20 +500,6 @@ asmlinkage void __kprobes do_general_protection(struct pt_regs * regs,
 {
 	conditional_sti(regs);
 
-#ifdef CONFIG_CHECKING
-       { 
-               unsigned long gs; 
-               struct x8664_pda *pda = cpu_pda + safe_smp_processor_id(); 
-               rdmsrl(MSR_GS_BASE, gs); 
-               if (gs != (unsigned long)pda) { 
-                       wrmsrl(MSR_GS_BASE, pda); 
-		       oops_in_progress++;
-                       printk("general protection handler: wrong gs %lx expected %p\n", gs, pda);
-		       oops_in_progress--;
-               }
-       }
-#endif
-
 	if (user_mode(regs)) {
 		struct task_struct *tsk = current;
 
@@ -665,19 +638,6 @@ asmlinkage void __kprobes do_debug(struct pt_regs * regs,
 	struct task_struct *tsk = current;
 	siginfo_t info;
 
-#ifdef CONFIG_CHECKING
-       { 
-	       /* RED-PEN interaction with debugger - could destroy gs */
-               unsigned long gs; 
-               struct x8664_pda *pda = cpu_pda + safe_smp_processor_id(); 
-               rdmsrl(MSR_GS_BASE, gs); 
-               if (gs != (unsigned long)pda) { 
-                       wrmsrl(MSR_GS_BASE, pda); 
-                       printk("debug handler: wrong gs %lx expected %p\n", gs, pda);
-               }
-       }
-#endif
-
 	get_debugreg(condition, 6);
 
 	if (notify_die(DIE_DEBUG, "debug", regs, condition, error_code,
diff --git a/arch/x86_64/mm/fault.c b/arch/x86_64/mm/fault.c
index b75b872ec154..3a63707a698b 100644
--- a/arch/x86_64/mm/fault.c
+++ b/arch/x86_64/mm/fault.c
@@ -308,18 +308,6 @@ asmlinkage void __kprobes do_page_fault(struct pt_regs *regs,
 	unsigned long flags;
 	siginfo_t info;
 
-#ifdef CONFIG_CHECKING
-	{ 
-		unsigned long gs; 
-		struct x8664_pda *pda = cpu_pda + stack_smp_processor_id(); 
-		rdmsrl(MSR_GS_BASE, gs); 
-		if (gs != (unsigned long)pda) { 
-			wrmsrl(MSR_GS_BASE, pda); 
-			printk("page_fault: wrong gs %lx expected %p\n", gs, pda);
-		}
-	}
-#endif
-
 	/* get the address */
 	__asm__("movq %%cr2,%0":"=r" (address));
 	if (notify_die(DIE_PAGE_FAULT, "page fault", regs, error_code, 14,
@@ -571,3 +559,10 @@ do_sigbus:
 	force_sig_info(SIGBUS, &info, tsk);
 	return;
 }
+
+static int __init enable_pagefaulttrace(char *str)
+{
+	page_fault_trace = 1;
+	return 0;
+}
+__setup("pagefaulttrace", enable_pagefaulttrace);
diff --git a/arch/x86_64/mm/init.c b/arch/x86_64/mm/init.c
index 854a41b8372b..286f6a624c3a 100644
--- a/arch/x86_64/mm/init.c
+++ b/arch/x86_64/mm/init.c
@@ -565,10 +565,6 @@ extern int exception_trace, page_fault_trace;
 static ctl_table debug_table2[] = {
 	{ 99, "exception-trace", &exception_trace, sizeof(int), 0644, NULL,
 	  proc_dointvec },
-#ifdef CONFIG_CHECKING
-	{ 100, "page-fault-trace", &page_fault_trace, sizeof(int), 0644, NULL,
-	  proc_dointvec },
-#endif
 	{ 0, }
 }; 
 
-- 
cgit v1.2.3


From e8a0033451f7972169b2f375be34d9d805ad8687 Mon Sep 17 00:00:00 2001
From: NeilBrown <neilb@suse.de>
Date: Tue, 15 Nov 2005 00:09:11 -0800
Subject: [PATCH] md: mark START_ARRAY deprecated with a date

This was marked deprecated "after 2.6" back in the 2.5 days.  But now it
seems there isn't going to be any "after 2.6", and we deprecate by date
now.  So set a date.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 Documentation/feature-removal-schedule.txt | 9 +++++++++
 drivers/md/md.c                            | 2 +-
 2 files changed, 10 insertions(+), 1 deletion(-)

(limited to 'Documentation')

diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
index 429db4bf98ec..24fe8edad304 100644
--- a/Documentation/feature-removal-schedule.txt
+++ b/Documentation/feature-removal-schedule.txt
@@ -140,3 +140,12 @@ What:	EXPORT_SYMBOL(lookup_hash)
 When:	January 2006
 Why:	Too low-level interface.  Use lookup_one_len or lookup_create instead.
 Who:	Christoph Hellwig <hch@lst.de>
+
+---------------------------
+
+What:	START_ARRAY ioctl for md
+When:	July 2006
+Files:	drivers/md/md.c
+Why:	Not reliable by design - can fail when most needed.
+	Alternatives exist
+Who:	NeilBrown <neilb@suse.de>
diff --git a/drivers/md/md.c b/drivers/md/md.c
index adf960d8a7c9..a9f032e341cb 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -3156,7 +3156,7 @@ static int md_ioctl(struct inode *inode, struct file *file,
 		if (cnt > 0 ) {
 			printk(KERN_WARNING
 			       "md: %s(pid %d) used deprecated START_ARRAY ioctl. "
-			       "This will not be supported beyond 2.6\n",
+			       "This will not be supported beyond July 2006\n",
 			       current->comm, current->pid);
 			cnt--;
 		}
-- 
cgit v1.2.3


From 1d193f4f112b9d8855ba1339fa784ee95f25b9c7 Mon Sep 17 00:00:00 2001
From: Ben Collins <bcollins@debian.org>
Date: Tue, 15 Nov 2005 00:09:21 -0800
Subject: [PATCH] Update location of ll_rw_blk.c in docs

Picked from the ubuntu-2.6 tree

The change in location for ll_rw_blk.c from drivers/block/ to block/ caused
failure to generate documentation.

Signed-off-by: Ben Collins <bcollins@ubuntu.com>
Cc: Jeff Garzik <jgarzik@pobox.com>
Cc: Jens Axboe <axboe@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 Documentation/DocBook/kernel-api.tmpl | 2 +-
 Documentation/block/biodoc.txt        | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

(limited to 'Documentation')

diff --git a/Documentation/DocBook/kernel-api.tmpl b/Documentation/DocBook/kernel-api.tmpl
index 0519c9dc0065..096aed62c326 100644
--- a/Documentation/DocBook/kernel-api.tmpl
+++ b/Documentation/DocBook/kernel-api.tmpl
@@ -386,7 +386,7 @@ X!Edrivers/pnp/system.c
 
   <chapter id="blkdev">
      <title>Block Devices</title>
-!Edrivers/block/ll_rw_blk.c
+!Eblock/ll_rw_blk.c
   </chapter>
 
   <chapter id="miscdev">
diff --git a/Documentation/block/biodoc.txt b/Documentation/block/biodoc.txt
index 2d65c2182161..0fe01c805480 100644
--- a/Documentation/block/biodoc.txt
+++ b/Documentation/block/biodoc.txt
@@ -1063,8 +1063,8 @@ Aside:
 4.4 I/O contexts
 I/O contexts provide a dynamically allocated per process data area. They may
 be used in I/O schedulers, and in the block layer (could be used for IO statis,
-priorities for example). See *io_context in drivers/block/ll_rw_blk.c, and
-as-iosched.c for an example of usage in an i/o scheduler.
+priorities for example). See *io_context in block/ll_rw_blk.c, and as-iosched.c
+for an example of usage in an i/o scheduler.
 
 
 5. Scalability related changes
-- 
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From e1f1def6ef3f0c71d0df302c3759f6937adaf9ae Mon Sep 17 00:00:00 2001
From: Dave Jones <davej@redhat.com>
Date: Tue, 15 Nov 2005 00:09:24 -0800
Subject: [PATCH] oops-tracing: mention extended VGA

Something I've found handy countless times when users do this..

Signed-off-by: Dave Jones <davej@redhat.com>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 Documentation/oops-tracing.txt | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'Documentation')

diff --git a/Documentation/oops-tracing.txt b/Documentation/oops-tracing.txt
index 9f30ac6ca47b..05960f8a748e 100644
--- a/Documentation/oops-tracing.txt
+++ b/Documentation/oops-tracing.txt
@@ -32,7 +32,10 @@ the disk is not available then you have three options :-
     has restarted.  Messy but it is the only option if you have not
     planned for a crash. Alternatively, you can take a picture of
     the screen with a digital camera - not nice, but better than
-    nothing.
+    nothing.  If the messages scroll off the top of the console, you
+    may find that booting with a higher resolution (eg, vga=791)
+    will allow you to read more of the text. (Caveat: This needs vesafb,
+    so won't help for 'early' oopses)
 
 (2) Boot with a serial console (see Documentation/serial-console.txt),
     run a null modem to a second machine and capture the output there
-- 
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