Merge branch 'perf/core' into perf/uprobes

Merge in latest upstream (and the latest perf development tree),
to prepare for tooling changes, and also to pick up v3.4 MM
changes that the uprobes code needs to take care of.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 84 insertions, 220 deletions

diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index d43dc25af82..cf5ea8cdcf8 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -164,6 +164,9 @@ struct mtd_info {
 	/* ECC layout structure pointer - read only! */
 	struct nand_ecclayout *ecclayout;
 
+	/* max number of correctible bit errors per writesize */
+	unsigned int ecc_strength;
+
 	/* Data for variable erase regions. If numeraseregions is zero,
 	 * it means that the whole device has erasesize as given above.
 	 */
@@ -174,52 +177,52 @@ struct mtd_info {
 	 * Do not call via these pointers, use corresponding mtd_*()
 	 * wrappers instead.
 	 */
-	int (*erase) (struct mtd_info *mtd, struct erase_info *instr);
-	int (*point) (struct mtd_info *mtd, loff_t from, size_t len,
-		      size_t *retlen, void **virt, resource_size_t *phys);
-	void (*unpoint) (struct mtd_info *mtd, loff_t from, size_t len);
-	unsigned long (*get_unmapped_area) (struct mtd_info *mtd,
-					    unsigned long len,
-					    unsigned long offset,
-					    unsigned long flags);
-	int (*read) (struct mtd_info *mtd, loff_t from, size_t len,
-		     size_t *retlen, u_char *buf);
-	int (*write) (struct mtd_info *mtd, loff_t to, size_t len,
-		      size_t *retlen, const u_char *buf);
-	int (*panic_write) (struct mtd_info *mtd, loff_t to, size_t len,
-			    size_t *retlen, const u_char *buf);
-	int (*read_oob) (struct mtd_info *mtd, loff_t from,
-			 struct mtd_oob_ops *ops);
-	int (*write_oob) (struct mtd_info *mtd, loff_t to,
+	int (*_erase) (struct mtd_info *mtd, struct erase_info *instr);
+	int (*_point) (struct mtd_info *mtd, loff_t from, size_t len,
+		       size_t *retlen, void **virt, resource_size_t *phys);
+	int (*_unpoint) (struct mtd_info *mtd, loff_t from, size_t len);
+	unsigned long (*_get_unmapped_area) (struct mtd_info *mtd,
+					     unsigned long len,
+					     unsigned long offset,
+					     unsigned long flags);
+	int (*_read) (struct mtd_info *mtd, loff_t from, size_t len,
+		      size_t *retlen, u_char *buf);
+	int (*_write) (struct mtd_info *mtd, loff_t to, size_t len,
+		       size_t *retlen, const u_char *buf);
+	int (*_panic_write) (struct mtd_info *mtd, loff_t to, size_t len,
+			     size_t *retlen, const u_char *buf);
+	int (*_read_oob) (struct mtd_info *mtd, loff_t from,
 			  struct mtd_oob_ops *ops);
-	int (*get_fact_prot_info) (struct mtd_info *mtd, struct otp_info *buf,
-				   size_t len);
-	int (*read_fact_prot_reg) (struct mtd_info *mtd, loff_t from,
-				   size_t len, size_t *retlen, u_char *buf);
-	int (*get_user_prot_info) (struct mtd_info *mtd, struct otp_info *buf,
-				   size_t len);
-	int (*read_user_prot_reg) (struct mtd_info *mtd, loff_t from,
-				   size_t len, size_t *retlen, u_char *buf);
-	int (*write_user_prot_reg) (struct mtd_info *mtd, loff_t to, size_t len,
-				    size_t *retlen, u_char *buf);
-	int (*lock_user_prot_reg) (struct mtd_info *mtd, loff_t from,
-				   size_t len);
-	int (*writev) (struct mtd_info *mtd, const struct kvec *vecs,
+	int (*_write_oob) (struct mtd_info *mtd, loff_t to,
+			   struct mtd_oob_ops *ops);
+	int (*_get_fact_prot_info) (struct mtd_info *mtd, struct otp_info *buf,
+				    size_t len);
+	int (*_read_fact_prot_reg) (struct mtd_info *mtd, loff_t from,
+				    size_t len, size_t *retlen, u_char *buf);
+	int (*_get_user_prot_info) (struct mtd_info *mtd, struct otp_info *buf,
+				    size_t len);
+	int (*_read_user_prot_reg) (struct mtd_info *mtd, loff_t from,
+				    size_t len, size_t *retlen, u_char *buf);
+	int (*_write_user_prot_reg) (struct mtd_info *mtd, loff_t to,
+				     size_t len, size_t *retlen, u_char *buf);
+	int (*_lock_user_prot_reg) (struct mtd_info *mtd, loff_t from,
+				    size_t len);
+	int (*_writev) (struct mtd_info *mtd, const struct kvec *vecs,
 			unsigned long count, loff_t to, size_t *retlen);
-	void (*sync) (struct mtd_info *mtd);
-	int (*lock) (struct mtd_info *mtd, loff_t ofs, uint64_t len);
-	int (*unlock) (struct mtd_info *mtd, loff_t ofs, uint64_t len);
-	int (*is_locked) (struct mtd_info *mtd, loff_t ofs, uint64_t len);
-	int (*block_isbad) (struct mtd_info *mtd, loff_t ofs);
-	int (*block_markbad) (struct mtd_info *mtd, loff_t ofs);
-	int (*suspend) (struct mtd_info *mtd);
-	void (*resume) (struct mtd_info *mtd);
+	void (*_sync) (struct mtd_info *mtd);
+	int (*_lock) (struct mtd_info *mtd, loff_t ofs, uint64_t len);
+	int (*_unlock) (struct mtd_info *mtd, loff_t ofs, uint64_t len);
+	int (*_is_locked) (struct mtd_info *mtd, loff_t ofs, uint64_t len);
+	int (*_block_isbad) (struct mtd_info *mtd, loff_t ofs);
+	int (*_block_markbad) (struct mtd_info *mtd, loff_t ofs);
+	int (*_suspend) (struct mtd_info *mtd);
+	void (*_resume) (struct mtd_info *mtd);
 	/*
 	 * If the driver is something smart, like UBI, it may need to maintain
 	 * its own reference counting. The below functions are only for driver.
 	 */
-	int (*get_device) (struct mtd_info *mtd);
-	void (*put_device) (struct mtd_info *mtd);
+	int (*_get_device) (struct mtd_info *mtd);
+	void (*_put_device) (struct mtd_info *mtd);
 
 	/* Backing device capabilities for this device
 	 * - provides mmap capabilities
@@ -240,214 +243,75 @@ struct mtd_info {
 	int usecount;
 };
 
-/*
- * Erase is an asynchronous operation.  Device drivers are supposed
- * to call instr->callback() whenever the operation completes, even
- * if it completes with a failure.
- * Callers are supposed to pass a callback function and wait for it
- * to be called before writing to the block.
- */
-static inline int mtd_erase(struct mtd_info *mtd, struct erase_info *instr)
-{
-	return mtd->erase(mtd, instr);
-}
-
-/*
- * This stuff for eXecute-In-Place. phys is optional and may be set to NULL.
- */
-static inline int mtd_point(struct mtd_info *mtd, loff_t from, size_t len,
-			    size_t *retlen, void **virt, resource_size_t *phys)
-{
-	*retlen = 0;
-	if (!mtd->point)
-		return -EOPNOTSUPP;
-	return mtd->point(mtd, from, len, retlen, virt, phys);
-}
-
-/* We probably shouldn't allow XIP if the unpoint isn't a NULL */
-static inline void mtd_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
-{
-	return mtd->unpoint(mtd, from, len);
-}
-
-/*
- * Allow NOMMU mmap() to directly map the device (if not NULL)
- * - return the address to which the offset maps
- * - return -ENOSYS to indicate refusal to do the mapping
- */
-static inline unsigned long mtd_get_unmapped_area(struct mtd_info *mtd,
-						  unsigned long len,
-						  unsigned long offset,
-						  unsigned long flags)
-{
-	if (!mtd->get_unmapped_area)
-		return -EOPNOTSUPP;
-	return mtd->get_unmapped_area(mtd, len, offset, flags);
-}
-
-static inline int mtd_read(struct mtd_info *mtd, loff_t from, size_t len,
-			   size_t *retlen, u_char *buf)
-{
-	return mtd->read(mtd, from, len, retlen, buf);
-}
-
-static inline int mtd_write(struct mtd_info *mtd, loff_t to, size_t len,
-			    size_t *retlen, const u_char *buf)
-{
-	*retlen = 0;
-	if (!mtd->write)
-		return -EROFS;
-	return mtd->write(mtd, to, len, retlen, buf);
-}
-
-/*
- * In blackbox flight recorder like scenarios we want to make successful writes
- * in interrupt context. panic_write() is only intended to be called when its
- * known the kernel is about to panic and we need the write to succeed. Since
- * the kernel is not going to be running for much longer, this function can
- * break locks and delay to ensure the write succeeds (but not sleep).
- */
-static inline int mtd_panic_write(struct mtd_info *mtd, loff_t to, size_t len,
-				  size_t *retlen, const u_char *buf)
-{
-	*retlen = 0;
-	if (!mtd->panic_write)
-		return -EOPNOTSUPP;
-	return mtd->panic_write(mtd, to, len, retlen, buf);
-}
+int mtd_erase(struct mtd_info *mtd, struct erase_info *instr);
+int mtd_point(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen,
+	      void **virt, resource_size_t *phys);
+int mtd_unpoint(struct mtd_info *mtd, loff_t from, size_t len);
+unsigned long mtd_get_unmapped_area(struct mtd_info *mtd, unsigned long len,
+				    unsigned long offset, unsigned long flags);
+int mtd_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen,
+	     u_char *buf);
+int mtd_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen,
+	      const u_char *buf);
+int mtd_panic_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen,
+		    const u_char *buf);
 
 static inline int mtd_read_oob(struct mtd_info *mtd, loff_t from,
 			       struct mtd_oob_ops *ops)
 {
 	ops->retlen = ops->oobretlen = 0;
-	if (!mtd->read_oob)
+	if (!mtd->_read_oob)
 		return -EOPNOTSUPP;
-	return mtd->read_oob(mtd, from, ops);
+	return mtd->_read_oob(mtd, from, ops);
 }
 
 static inline int mtd_write_oob(struct mtd_info *mtd, loff_t to,
 				struct mtd_oob_ops *ops)
 {
 	ops->retlen = ops->oobretlen = 0;
-	if (!mtd->write_oob)
-		return -EOPNOTSUPP;
-	return mtd->write_oob(mtd, to, ops);
-}
-
-/*
- * Method to access the protection register area, present in some flash
- * devices. The user data is one time programmable but the factory data is read
- * only.
- */
-static inline int mtd_get_fact_prot_info(struct mtd_info *mtd,
-					 struct otp_info *buf, size_t len)
-{
-	if (!mtd->get_fact_prot_info)
+	if (!mtd->_write_oob)
 		return -EOPNOTSUPP;
-	return mtd->get_fact_prot_info(mtd, buf, len);
-}
-
-static inline int mtd_read_fact_prot_reg(struct mtd_info *mtd, loff_t from,
-					 size_t len, size_t *retlen,
-					 u_char *buf)
-{
-	*retlen = 0;
-	if (!mtd->read_fact_prot_reg)
-		return -EOPNOTSUPP;
-	return mtd->read_fact_prot_reg(mtd, from, len, retlen, buf);
-}
-
-static inline int mtd_get_user_prot_info(struct mtd_info *mtd,
-					 struct otp_info *buf,
-					 size_t len)
-{
-	if (!mtd->get_user_prot_info)
-		return -EOPNOTSUPP;
-	return mtd->get_user_prot_info(mtd, buf, len);
-}
-
-static inline int mtd_read_user_prot_reg(struct mtd_info *mtd, loff_t from,
-					 size_t len, size_t *retlen,
-					 u_char *buf)
-{
-	*retlen = 0;
-	if (!mtd->read_user_prot_reg)
-		return -EOPNOTSUPP;
-	return mtd->read_user_prot_reg(mtd, from, len, retlen, buf);
-}
-
-static inline int mtd_write_user_prot_reg(struct mtd_info *mtd, loff_t to,
-					  size_t len, size_t *retlen,
-					  u_char *buf)
-{
-	*retlen = 0;
-	if (!mtd->write_user_prot_reg)
-		return -EOPNOTSUPP;
-	return mtd->write_user_prot_reg(mtd, to, len, retlen, buf);
+	if (!(mtd->flags & MTD_WRITEABLE))
+		return -EROFS;
+	return mtd->_write_oob(mtd, to, ops);
 }
 
-static inline int mtd_lock_user_prot_reg(struct mtd_info *mtd, loff_t from,
-					 size_t len)
-{
-	if (!mtd->lock_user_prot_reg)
-		return -EOPNOTSUPP;
-	return mtd->lock_user_prot_reg(mtd, from, len);
-}
+int mtd_get_fact_prot_info(struct mtd_info *mtd, struct otp_info *buf,
+			   size_t len);
+int mtd_read_fact_prot_reg(struct mtd_info *mtd, loff_t from, size_t len,
+			   size_t *retlen, u_char *buf);
+int mtd_get_user_prot_info(struct mtd_info *mtd, struct otp_info *buf,
+			   size_t len);
+int mtd_read_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len,
+			   size_t *retlen, u_char *buf);
+int mtd_write_user_prot_reg(struct mtd_info *mtd, loff_t to, size_t len,
+			    size_t *retlen, u_char *buf);
+int mtd_lock_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len);
 
 int mtd_writev(struct mtd_info *mtd, const struct kvec *vecs,
 	       unsigned long count, loff_t to, size_t *retlen);
 
 static inline void mtd_sync(struct mtd_info *mtd)
 {
-	if (mtd->sync)
-		mtd->sync(mtd);
-}
-
-/* Chip-supported device locking */
-static inline int mtd_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
-{
-	if (!mtd->lock)
-		return -EOPNOTSUPP;
-	return mtd->lock(mtd, ofs, len);
+	if (mtd->_sync)
+		mtd->_sync(mtd);
 }
 
-static inline int mtd_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
-{
-	if (!mtd->unlock)
-		return -EOPNOTSUPP;
-	return mtd->unlock(mtd, ofs, len);
-}
-
-static inline int mtd_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len)
-{
-	if (!mtd->is_locked)
-		return -EOPNOTSUPP;
-	return mtd->is_locked(mtd, ofs, len);
-}
+int mtd_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
+int mtd_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
+int mtd_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len);
+int mtd_block_isbad(struct mtd_info *mtd, loff_t ofs);
+int mtd_block_markbad(struct mtd_info *mtd, loff_t ofs);
 
 static inline int mtd_suspend(struct mtd_info *mtd)
 {
-	return mtd->suspend ? mtd->suspend(mtd) : 0;
+	return mtd->_suspend ? mtd->_suspend(mtd) : 0;
 }
 
 static inline void mtd_resume(struct mtd_info *mtd)
 {
-	if (mtd->resume)
-		mtd->resume(mtd);
-}
-
-static inline int mtd_block_isbad(struct mtd_info *mtd, loff_t ofs)
-{
-	if (!mtd->block_isbad)
-		return 0;
-	return mtd->block_isbad(mtd, ofs);
-}
-
-static inline int mtd_block_markbad(struct mtd_info *mtd, loff_t ofs)
-{
-	if (!mtd->block_markbad)
-		return -EOPNOTSUPP;
-	return mtd->block_markbad(mtd, ofs);
+	if (mtd->_resume)
+		mtd->_resume(mtd);
 }
 
 static inline uint32_t mtd_div_by_eb(uint64_t sz, struct mtd_info *mtd)
@@ -482,12 +346,12 @@ static inline uint32_t mtd_mod_by_ws(uint64_t sz, struct mtd_info *mtd)
 
 static inline int mtd_has_oob(const struct mtd_info *mtd)
 {
-	return mtd->read_oob && mtd->write_oob;
+	return mtd->_read_oob && mtd->_write_oob;
 }
 
 static inline int mtd_can_have_bb(const struct mtd_info *mtd)
 {
-	return !!mtd->block_isbad;
+	return !!mtd->_block_isbad;
 }
 
 	/* Kernel-side ioctl definitions */