These changes are the raw update to linux-4.4.6-rt14. Kernel sources

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

9 files changed, 44 insertions, 77 deletions

diff --git a/kernel/arch/alpha/include/asm/Kbuild b/kernel/arch/alpha/include/asm/Kbuild
index 76aeb8fa5..ffd9cf5ec 100644
--- a/kernel/arch/alpha/include/asm/Kbuild
+++ b/kernel/arch/alpha/include/asm/Kbuild
@@ -5,7 +5,7 @@ generic-y += cputime.h
 generic-y += exec.h
 generic-y += irq_work.h
 generic-y += mcs_spinlock.h
+generic-y += mm-arch-hooks.h
 generic-y += preempt.h
-generic-y += scatterlist.h
 generic-y += sections.h
 generic-y += trace_clock.h
diff --git a/kernel/arch/alpha/include/asm/atomic.h b/kernel/arch/alpha/include/asm/atomic.h
index 8f8eafbed..572b228c4 100644
--- a/kernel/arch/alpha/include/asm/atomic.h
+++ b/kernel/arch/alpha/include/asm/atomic.h
@@ -17,11 +17,11 @@
 #define ATOMIC_INIT(i)		{ (i) }
 #define ATOMIC64_INIT(i)	{ (i) }
 
-#define atomic_read(v)		ACCESS_ONCE((v)->counter)
-#define atomic64_read(v)	ACCESS_ONCE((v)->counter)
+#define atomic_read(v)		READ_ONCE((v)->counter)
+#define atomic64_read(v)	READ_ONCE((v)->counter)
 
-#define atomic_set(v,i)		((v)->counter = (i))
-#define atomic64_set(v,i)	((v)->counter = (i))
+#define atomic_set(v,i)		WRITE_ONCE((v)->counter, (i))
+#define atomic64_set(v,i)	WRITE_ONCE((v)->counter, (i))
 
 /*
  * To get proper branch prediction for the main line, we must branch
@@ -29,13 +29,13 @@
  * branch back to restart the operation.
  */
 
-#define ATOMIC_OP(op)							\
+#define ATOMIC_OP(op, asm_op)						\
 static __inline__ void atomic_##op(int i, atomic_t * v)			\
 {									\
 	unsigned long temp;						\
 	__asm__ __volatile__(						\
 	"1:	ldl_l %0,%1\n"						\
-	"	" #op "l %0,%2,%0\n"					\
+	"	" #asm_op " %0,%2,%0\n"					\
 	"	stl_c %0,%1\n"						\
 	"	beq %0,2f\n"						\
 	".subsection 2\n"						\
@@ -45,15 +45,15 @@ static __inline__ void atomic_##op(int i, atomic_t * v)			\
 	:"Ir" (i), "m" (v->counter));					\
 }									\
 
-#define ATOMIC_OP_RETURN(op)						\
+#define ATOMIC_OP_RETURN(op, asm_op)					\
 static inline int atomic_##op##_return(int i, atomic_t *v)		\
 {									\
 	long temp, result;						\
 	smp_mb();							\
 	__asm__ __volatile__(						\
 	"1:	ldl_l %0,%1\n"						\
-	"	" #op "l %0,%3,%2\n"					\
-	"	" #op "l %0,%3,%0\n"					\
+	"	" #asm_op " %0,%3,%2\n"					\
+	"	" #asm_op " %0,%3,%0\n"					\
 	"	stl_c %0,%1\n"						\
 	"	beq %0,2f\n"						\
 	".subsection 2\n"						\
@@ -65,13 +65,13 @@ static inline int atomic_##op##_return(int i, atomic_t *v)		\
 	return result;							\
 }
 
-#define ATOMIC64_OP(op)							\
+#define ATOMIC64_OP(op, asm_op)						\
 static __inline__ void atomic64_##op(long i, atomic64_t * v)		\
 {									\
 	unsigned long temp;						\
 	__asm__ __volatile__(						\
 	"1:	ldq_l %0,%1\n"						\
-	"	" #op "q %0,%2,%0\n"					\
+	"	" #asm_op " %0,%2,%0\n"					\
 	"	stq_c %0,%1\n"						\
 	"	beq %0,2f\n"						\
 	".subsection 2\n"						\
@@ -81,15 +81,15 @@ static __inline__ void atomic64_##op(long i, atomic64_t * v)		\
 	:"Ir" (i), "m" (v->counter));					\
 }									\
 
-#define ATOMIC64_OP_RETURN(op)						\
+#define ATOMIC64_OP_RETURN(op, asm_op)					\
 static __inline__ long atomic64_##op##_return(long i, atomic64_t * v)	\
 {									\
 	long temp, result;						\
 	smp_mb();							\
 	__asm__ __volatile__(						\
 	"1:	ldq_l %0,%1\n"						\
-	"	" #op "q %0,%3,%2\n"					\
-	"	" #op "q %0,%3,%0\n"					\
+	"	" #asm_op " %0,%3,%2\n"					\
+	"	" #asm_op " %0,%3,%0\n"					\
 	"	stq_c %0,%1\n"						\
 	"	beq %0,2f\n"						\
 	".subsection 2\n"						\
@@ -101,15 +101,27 @@ static __inline__ long atomic64_##op##_return(long i, atomic64_t * v)	\
 	return result;							\
 }
 
-#define ATOMIC_OPS(opg)							\
-	ATOMIC_OP(opg)							\
-	ATOMIC_OP_RETURN(opg)						\
-	ATOMIC64_OP(opg)						\
-	ATOMIC64_OP_RETURN(opg)
+#define ATOMIC_OPS(op)							\
+	ATOMIC_OP(op, op##l)						\
+	ATOMIC_OP_RETURN(op, op##l)					\
+	ATOMIC64_OP(op, op##q)						\
+	ATOMIC64_OP_RETURN(op, op##q)
 
 ATOMIC_OPS(add)
 ATOMIC_OPS(sub)
 
+#define atomic_andnot atomic_andnot
+#define atomic64_andnot atomic64_andnot
+
+ATOMIC_OP(and, and)
+ATOMIC_OP(andnot, bic)
+ATOMIC_OP(or, bis)
+ATOMIC_OP(xor, xor)
+ATOMIC64_OP(and, and)
+ATOMIC64_OP(andnot, bic)
+ATOMIC64_OP(or, bis)
+ATOMIC64_OP(xor, xor)
+
 #undef ATOMIC_OPS
 #undef ATOMIC64_OP_RETURN
 #undef ATOMIC64_OP
diff --git a/kernel/arch/alpha/include/asm/cmpxchg.h b/kernel/arch/alpha/include/asm/cmpxchg.h
index 429e8cd0d..e51177665 100644
--- a/kernel/arch/alpha/include/asm/cmpxchg.h
+++ b/kernel/arch/alpha/include/asm/cmpxchg.h
@@ -66,6 +66,4 @@
 #undef __ASM__MB
 #undef ____cmpxchg
 
-#define __HAVE_ARCH_CMPXCHG 1
-
 #endif /* _ALPHA_CMPXCHG_H */
diff --git a/kernel/arch/alpha/include/asm/dma-mapping.h b/kernel/arch/alpha/include/asm/dma-mapping.h
index dfa32f061..72a8ca779 100644
--- a/kernel/arch/alpha/include/asm/dma-mapping.h
+++ b/kernel/arch/alpha/include/asm/dma-mapping.h
@@ -12,42 +12,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
 
 #include <asm-generic/dma-mapping-common.h>
 
-#define dma_alloc_coherent(d,s,h,f)	dma_alloc_attrs(d,s,h,f,NULL)
-
-static inline void *dma_alloc_attrs(struct device *dev, size_t size,
-				    dma_addr_t *dma_handle, gfp_t gfp,
-				    struct dma_attrs *attrs)
-{
-	return get_dma_ops(dev)->alloc(dev, size, dma_handle, gfp, attrs);
-}
-
-#define dma_free_coherent(d,s,c,h) dma_free_attrs(d,s,c,h,NULL)
-
-static inline void dma_free_attrs(struct device *dev, size_t size,
-				  void *vaddr, dma_addr_t dma_handle,
-				  struct dma_attrs *attrs)
-{
-	get_dma_ops(dev)->free(dev, size, vaddr, dma_handle, attrs);
-}
-
-static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
-{
-	return get_dma_ops(dev)->mapping_error(dev, dma_addr);
-}
-
-static inline int dma_supported(struct device *dev, u64 mask)
-{
-	return get_dma_ops(dev)->dma_supported(dev, mask);
-}
-
-static inline int dma_set_mask(struct device *dev, u64 mask)
-{
-	return get_dma_ops(dev)->set_dma_mask(dev, mask);
-}
-
-#define dma_alloc_noncoherent(d, s, h, f)	dma_alloc_coherent(d, s, h, f)
-#define dma_free_noncoherent(d, s, v, h)	dma_free_coherent(d, s, v, h)
-
 #define dma_cache_sync(dev, va, size, dir)		  ((void)0)
 
 #endif	/* _ALPHA_DMA_MAPPING_H */
diff --git a/kernel/arch/alpha/include/asm/io.h b/kernel/arch/alpha/include/asm/io.h
index f05bdb4b1..ff4049155 100644
--- a/kernel/arch/alpha/include/asm/io.h
+++ b/kernel/arch/alpha/include/asm/io.h
@@ -297,7 +297,9 @@ static inline void __iomem * ioremap_nocache(unsigned long offset,
 					     unsigned long size)
 {
 	return ioremap(offset, size);
-} 
+}
+
+#define ioremap_uc ioremap_nocache
 
 static inline void iounmap(volatile void __iomem *addr)
 {
diff --git a/kernel/arch/alpha/include/asm/pci.h b/kernel/arch/alpha/include/asm/pci.h
index f7f680f74..98f2eeee8 100644
--- a/kernel/arch/alpha/include/asm/pci.h
+++ b/kernel/arch/alpha/include/asm/pci.h
@@ -5,7 +5,7 @@
 
 #include <linux/spinlock.h>
 #include <linux/dma-mapping.h>
-#include <asm/scatterlist.h>
+#include <linux/scatterlist.h>
 #include <asm/machvec.h>
 #include <asm-generic/pci-bridge.h>
 
@@ -71,22 +71,6 @@ extern void pcibios_set_master(struct pci_dev *dev);
 /* implement the pci_ DMA API in terms of the generic device dma_ one */
 #include <asm-generic/pci-dma-compat.h>
 
-static inline void pci_dma_burst_advice(struct pci_dev *pdev,
-					enum pci_dma_burst_strategy *strat,
-					unsigned long *strategy_parameter)
-{
-	unsigned long cacheline_size;
-	u8 byte;
-
-	pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &byte);
-	if (byte == 0)
-		cacheline_size = 1024;
-	else
-		cacheline_size = (int) byte * 4;
-
-	*strat = PCI_DMA_BURST_BOUNDARY;
-	*strategy_parameter = cacheline_size;
-}
 #endif
 
 /* TODO: integrate with include/asm-generic/pci.h ? */
diff --git a/kernel/arch/alpha/include/asm/serial.h b/kernel/arch/alpha/include/asm/serial.h
index 9d263e8d8..22909b83f 100644
--- a/kernel/arch/alpha/include/asm/serial.h
+++ b/kernel/arch/alpha/include/asm/serial.h
@@ -13,7 +13,7 @@
 #define BASE_BAUD ( 1843200 / 16 )
 
 /* Standard COM flags (except for COM4, because of the 8514 problem) */
-#ifdef CONFIG_SERIAL_DETECT_IRQ
+#ifdef CONFIG_SERIAL_8250_DETECT_IRQ
 #define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ)
 #define STD_COM4_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_AUTO_IRQ)
 #else
diff --git a/kernel/arch/alpha/include/asm/spinlock.h b/kernel/arch/alpha/include/asm/spinlock.h
index 37b570d01..fed9c6f44 100644
--- a/kernel/arch/alpha/include/asm/spinlock.h
+++ b/kernel/arch/alpha/include/asm/spinlock.h
@@ -16,6 +16,11 @@
 #define arch_spin_unlock_wait(x) \
 		do { cpu_relax(); } while ((x)->lock)
 
+static inline int arch_spin_value_unlocked(arch_spinlock_t lock)
+{
+        return lock.lock == 0;
+}
+
 static inline void arch_spin_unlock(arch_spinlock_t * lock)
 {
 	mb();
diff --git a/kernel/arch/alpha/include/asm/word-at-a-time.h b/kernel/arch/alpha/include/asm/word-at-a-time.h
index 6b340d0f1..902e6ab00 100644
--- a/kernel/arch/alpha/include/asm/word-at-a-time.h
+++ b/kernel/arch/alpha/include/asm/word-at-a-time.h
@@ -52,4 +52,6 @@ static inline unsigned long find_zero(unsigned long bits)
 #endif
 }
 
+#define zero_bytemask(mask) ((2ul << (find_zero(mask) * 8)) - 1)
+
 #endif /* _ASM_WORD_AT_A_TIME_H */