Merge branch 'akpm' (Andrew's patch-bomb)

Merge second batch of patches from Andrew Morton:
 - various misc things
 - core kernel changes to prctl, exit, exec, init, etc.
 - kernel/watchdog.c updates
 - get_maintainer
 - MAINTAINERS
 - the backlight driver queue
 - core bitops code cleanups
 - the led driver queue
 - some core prio_tree work
 - checkpatch udpates
 - largeish crc32 update
 - a new poll() feature for the v4l guys
 - the rtc driver queue
 - fatfs
 - ptrace
 - signals
 - kmod/usermodehelper updates
 - coredump
 - procfs updates

* emailed from Andrew Morton <akpm@linux-foundation.org>: (141 commits)
  seq_file: add seq_set_overflow(), seq_overflow()
  proc-ns: use d_set_d_op() API to set dentry ops in proc_ns_instantiate().
  procfs: speed up /proc/pid/stat, statm
  procfs: add num_to_str() to speed up /proc/stat
  proc: speed up /proc/stat handling
  fs/proc/kcore.c: make get_sparsemem_vmemmap_info() static
  coredump: add VM_NODUMP, MADV_NODUMP, MADV_CLEAR_NODUMP
  coredump: remove VM_ALWAYSDUMP flag
  kmod: make __request_module() killable
  kmod: introduce call_modprobe() helper
  usermodehelper: ____call_usermodehelper() doesn't need do_exit()
  usermodehelper: kill umh_wait, renumber UMH_* constants
  usermodehelper: implement UMH_KILLABLE
  usermodehelper: introduce umh_complete(sub_info)
  usermodehelper: use UMH_WAIT_PROC consistently
  signal: zap_pid_ns_processes: s/SEND_SIG_NOINFO/SEND_SIG_FORCED/
  signal: oom_kill_task: use SEND_SIG_FORCED instead of force_sig()
  signal: cosmetic, s/from_ancestor_ns/force/ in prepare_signal() paths
  signal: give SEND_SIG_FORCED more power to beat SIGNAL_UNKILLABLE
  Hexagon: use set_current_blocked() and block_sigmask()
  ...

20 files changed, 288 insertions, 62 deletions

diff --git a/include/linux/bitops.h b/include/linux/bitops.h
index 94300fe46cce..a3b6b82108b9 100644
--- a/include/linux/bitops.h
+++ b/include/linux/bitops.h
@@ -27,11 +27,22 @@ extern unsigned long __sw_hweight64(__u64 w);
 	     (bit) = find_next_bit((addr), (size), (bit) + 1))
 
 /* same as for_each_set_bit() but use bit as value to start with */
-#define for_each_set_bit_cont(bit, addr, size) \
+#define for_each_set_bit_from(bit, addr, size) \
 	for ((bit) = find_next_bit((addr), (size), (bit));	\
 	     (bit) < (size);					\
 	     (bit) = find_next_bit((addr), (size), (bit) + 1))
 
+#define for_each_clear_bit(bit, addr, size) \
+	for ((bit) = find_first_zero_bit((addr), (size));	\
+	     (bit) < (size);					\
+	     (bit) = find_next_zero_bit((addr), (size), (bit) + 1))
+
+/* same as for_each_clear_bit() but use bit as value to start with */
+#define for_each_clear_bit_from(bit, addr, size) \
+	for ((bit) = find_next_zero_bit((addr), (size), (bit));	\
+	     (bit) < (size);					\
+	     (bit) = find_next_zero_bit((addr), (size), (bit) + 1))
+
 static __inline__ int get_bitmask_order(unsigned int count)
 {
 	int order;
diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h
index 3fd17c249221..e5834aa24b9e 100644
--- a/include/linux/compiler-gcc.h
+++ b/include/linux/compiler-gcc.h
@@ -87,7 +87,8 @@
  */
 #define __pure				__attribute__((pure))
 #define __aligned(x)			__attribute__((aligned(x)))
-#define __printf(a,b)			__attribute__((format(printf,a,b)))
+#define __printf(a, b)			__attribute__((format(printf, a, b)))
+#define __scanf(a, b)			__attribute__((format(scanf, a, b)))
 #define  noinline			__attribute__((noinline))
 #define __attribute_const__		__attribute__((__const__))
 #define __maybe_unused			__attribute__((unused))
diff --git a/include/linux/crc32.h b/include/linux/crc32.h
index 391a259b2cc9..68267b64bb98 100644
--- a/include/linux/crc32.h
+++ b/include/linux/crc32.h
@@ -11,6 +11,8 @@
 extern u32  crc32_le(u32 crc, unsigned char const *p, size_t len);
 extern u32  crc32_be(u32 crc, unsigned char const *p, size_t len);
 
+extern u32  __crc32c_le(u32 crc, unsigned char const *p, size_t len);
+
 #define crc32(seed, data, length)  crc32_le(seed, (unsigned char const *)(data), length)
 
 /*
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index d801acb5e680..3e140add5360 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -312,6 +312,8 @@ extern long long simple_strtoll(const char *,char **,unsigned int);
 #define strict_strtoull	kstrtoull
 #define strict_strtoll	kstrtoll
 
+extern int num_to_str(char *buf, int size, unsigned long long num);
+
 /* lib/printf utilities */
 
 extern __printf(2, 3) int sprintf(char *buf, const char * fmt, ...);
@@ -328,10 +330,10 @@ extern __printf(2, 3)
 char *kasprintf(gfp_t gfp, const char *fmt, ...);
 extern char *kvasprintf(gfp_t gfp, const char *fmt, va_list args);
 
-extern int sscanf(const char *, const char *, ...)
-	__attribute__ ((format (scanf, 2, 3)));
-extern int vsscanf(const char *, const char *, va_list)
-	__attribute__ ((format (scanf, 2, 0)));
+extern __scanf(2, 3)
+int sscanf(const char *, const char *, ...);
+extern __scanf(2, 0)
+int vsscanf(const char *, const char *, va_list);
 
 extern int get_option(char **str, int *pint);
 extern char *get_options(const char *str, int nints, int *ints);
diff --git a/include/linux/kmod.h b/include/linux/kmod.h
index 722f477c4ef7..9efeae679106 100644
--- a/include/linux/kmod.h
+++ b/include/linux/kmod.h
@@ -48,11 +48,10 @@ static inline int request_module_nowait(const char *name, ...) { return -ENOSYS;
 struct cred;
 struct file;
 
-enum umh_wait {
-	UMH_NO_WAIT = -1,	/* don't wait at all */
-	UMH_WAIT_EXEC = 0,	/* wait for the exec, but not the process */
-	UMH_WAIT_PROC = 1,	/* wait for the process to complete */
-};
+#define UMH_NO_WAIT	0	/* don't wait at all */
+#define UMH_WAIT_EXEC	1	/* wait for the exec, but not the process */
+#define UMH_WAIT_PROC	2	/* wait for the process to complete */
+#define UMH_KILLABLE	4	/* wait for EXEC/PROC killable */
 
 struct subprocess_info {
 	struct work_struct work;
@@ -60,7 +59,7 @@ struct subprocess_info {
 	char *path;
 	char **argv;
 	char **envp;
-	enum umh_wait wait;
+	int wait;
 	int retval;
 	int (*init)(struct subprocess_info *info, struct cred *new);
 	void (*cleanup)(struct subprocess_info *info);
@@ -78,15 +77,14 @@ void call_usermodehelper_setfns(struct subprocess_info *info,
 		    void *data);
 
 /* Actually execute the sub-process */
-int call_usermodehelper_exec(struct subprocess_info *info, enum umh_wait wait);
+int call_usermodehelper_exec(struct subprocess_info *info, int wait);
 
 /* Free the subprocess_info. This is only needed if you're not going
    to call call_usermodehelper_exec */
 void call_usermodehelper_freeinfo(struct subprocess_info *info);
 
 static inline int
-call_usermodehelper_fns(char *path, char **argv, char **envp,
-			enum umh_wait wait,
+call_usermodehelper_fns(char *path, char **argv, char **envp, int wait,
 			int (*init)(struct subprocess_info *info, struct cred *new),
 			void (*cleanup)(struct subprocess_info *), void *data)
 {
@@ -104,7 +102,7 @@ call_usermodehelper_fns(char *path, char **argv, char **envp,
 }
 
 static inline int
-call_usermodehelper(char *path, char **argv, char **envp, enum umh_wait wait)
+call_usermodehelper(char *path, char **argv, char **envp, int wait)
 {
 	return call_usermodehelper_fns(path, argv, envp, wait,
 				       NULL, NULL, NULL);
diff --git a/include/linux/led-lm3530.h b/include/linux/led-lm3530.h
index 8eb12357a110..eeae6e742471 100644
--- a/include/linux/led-lm3530.h
+++ b/include/linux/led-lm3530.h
@@ -72,6 +72,12 @@ enum lm3530_als_mode {
 	LM3530_INPUT_CEIL,	/* Max of ALS1 and ALS2 */
 };
 
+/* PWM Platform Specific Data */
+struct lm3530_pwm_data {
+	void (*pwm_set_intensity) (int brightness, int max_brightness);
+	int (*pwm_get_intensity) (int max_brightness);
+};
+
 /**
  * struct lm3530_platform_data
  * @mode: mode of operation i.e. Manual, ALS or PWM
@@ -87,6 +93,7 @@ enum lm3530_als_mode {
  * @als_vmin: als input voltage calibrated for max brightness in mV
  * @als_vmax: als input voltage calibrated for min brightness in mV
  * @brt_val: brightness value (0-255)
+ * @pwm_data: PWM control functions (only valid when the mode is PWM)
  */
 struct lm3530_platform_data {
 	enum lm3530_mode mode;
@@ -107,6 +114,8 @@ struct lm3530_platform_data {
 	u32 als_vmax;
 
 	u8 brt_val;
+
+	struct lm3530_pwm_data pwm_data;
 };
 
 #endif	/* _LINUX_LED_LM3530_H__ */
diff --git a/include/linux/leds-lp5521.h b/include/linux/leds-lp5521.h
index fd548d2a8775..3f071ec019b2 100644
--- a/include/linux/leds-lp5521.h
+++ b/include/linux/leds-lp5521.h
@@ -26,15 +26,37 @@
 /* See Documentation/leds/leds-lp5521.txt */
 
 struct lp5521_led_config {
+	char		*name;
 	u8		chan_nr;
 	u8		led_current; /* mA x10, 0 if led is not connected */
 	u8		max_current;
 };
 
+struct lp5521_led_pattern {
+	u8 *r;
+	u8 *g;
+	u8 *b;
+	u8 size_r;
+	u8 size_g;
+	u8 size_b;
+};
+
 #define LP5521_CLOCK_AUTO	0
 #define LP5521_CLOCK_INT	1
 #define LP5521_CLOCK_EXT	2
 
+/* Bits in CONFIG register */
+#define LP5521_PWM_HF			0x40	/* PWM: 0 = 256Hz, 1 = 558Hz */
+#define LP5521_PWRSAVE_EN		0x20	/* 1 = Power save mode */
+#define LP5521_CP_MODE_OFF		0	/* Charge pump (CP) off */
+#define LP5521_CP_MODE_BYPASS		8	/* CP forced to bypass mode */
+#define LP5521_CP_MODE_1X5		0x10	/* CP forced to 1.5x mode */
+#define LP5521_CP_MODE_AUTO		0x18	/* Automatic mode selection */
+#define LP5521_R_TO_BATT		4	/* R out: 0 = CP, 1 = Vbat */
+#define LP5521_CLK_SRC_EXT		0	/* Ext-clk source (CLK_32K) */
+#define LP5521_CLK_INT			1	/* Internal clock */
+#define LP5521_CLK_AUTO			2	/* Automatic clock selection */
+
 struct lp5521_platform_data {
 	struct lp5521_led_config *led_config;
 	u8	num_channels;
@@ -43,6 +65,9 @@ struct lp5521_platform_data {
 	void	(*release_resources)(void);
 	void	(*enable)(bool state);
 	const char *label;
+	u8	update_config;
+	struct lp5521_led_pattern *patterns;
+	int num_patterns;
 };
 
 #endif /* __LINUX_LP5521_H */
diff --git a/include/linux/lp855x.h b/include/linux/lp855x.h
new file mode 100644
index 000000000000..781a490a451b
--- /dev/null
+++ b/include/linux/lp855x.h
@@ -0,0 +1,131 @@
+/*
+ * LP855x Backlight Driver
+ *
+ *			Copyright (C) 2011 Texas Instruments
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#ifndef _LP855X_H
+#define _LP855X_H
+
+#define BL_CTL_SHFT	(0)
+#define BRT_MODE_SHFT	(1)
+#define BRT_MODE_MASK	(0x06)
+
+/* Enable backlight. Only valid when BRT_MODE=10(I2C only) */
+#define ENABLE_BL	(1)
+#define DISABLE_BL	(0)
+
+#define I2C_CONFIG(id)	id ## _I2C_CONFIG
+#define PWM_CONFIG(id)	id ## _PWM_CONFIG
+
+/* DEVICE CONTROL register - LP8550 */
+#define LP8550_PWM_CONFIG	(LP8550_PWM_ONLY << BRT_MODE_SHFT)
+#define LP8550_I2C_CONFIG	((ENABLE_BL << BL_CTL_SHFT) | \
+				(LP8550_I2C_ONLY << BRT_MODE_SHFT))
+
+/* DEVICE CONTROL register - LP8551 */
+#define LP8551_PWM_CONFIG	LP8550_PWM_CONFIG
+#define LP8551_I2C_CONFIG	LP8550_I2C_CONFIG
+
+/* DEVICE CONTROL register - LP8552 */
+#define LP8552_PWM_CONFIG	LP8550_PWM_CONFIG
+#define LP8552_I2C_CONFIG	LP8550_I2C_CONFIG
+
+/* DEVICE CONTROL register - LP8553 */
+#define LP8553_PWM_CONFIG	LP8550_PWM_CONFIG
+#define LP8553_I2C_CONFIG	LP8550_I2C_CONFIG
+
+/* DEVICE CONTROL register - LP8556 */
+#define LP8556_PWM_CONFIG	(LP8556_PWM_ONLY << BRT_MODE_SHFT)
+#define LP8556_COMB1_CONFIG	(LP8556_COMBINED1 << BRT_MODE_SHFT)
+#define LP8556_I2C_CONFIG	((ENABLE_BL << BL_CTL_SHFT) | \
+				(LP8556_I2C_ONLY << BRT_MODE_SHFT))
+#define LP8556_COMB2_CONFIG	(LP8556_COMBINED2 << BRT_MODE_SHFT)
+
+/* ROM area boundary */
+#define EEPROM_START	(0xA0)
+#define EEPROM_END	(0xA7)
+#define EPROM_START	(0xA0)
+#define EPROM_END	(0xAF)
+
+enum lp855x_chip_id {
+	LP8550,
+	LP8551,
+	LP8552,
+	LP8553,
+	LP8556,
+};
+
+enum lp855x_brightness_ctrl_mode {
+	PWM_BASED = 1,
+	REGISTER_BASED,
+};
+
+enum lp8550_brighntess_source {
+	LP8550_PWM_ONLY,
+	LP8550_I2C_ONLY = 2,
+};
+
+enum lp8551_brighntess_source {
+	LP8551_PWM_ONLY = LP8550_PWM_ONLY,
+	LP8551_I2C_ONLY = LP8550_I2C_ONLY,
+};
+
+enum lp8552_brighntess_source {
+	LP8552_PWM_ONLY = LP8550_PWM_ONLY,
+	LP8552_I2C_ONLY = LP8550_I2C_ONLY,
+};
+
+enum lp8553_brighntess_source {
+	LP8553_PWM_ONLY = LP8550_PWM_ONLY,
+	LP8553_I2C_ONLY = LP8550_I2C_ONLY,
+};
+
+enum lp8556_brightness_source {
+	LP8556_PWM_ONLY,
+	LP8556_COMBINED1,	/* pwm + i2c before the shaper block */
+	LP8556_I2C_ONLY,
+	LP8556_COMBINED2,	/* pwm + i2c after the shaper block */
+};
+
+struct lp855x_pwm_data {
+	void (*pwm_set_intensity) (int brightness, int max_brightness);
+	int (*pwm_get_intensity) (int max_brightness);
+};
+
+struct lp855x_rom_data {
+	u8 addr;
+	u8 val;
+};
+
+/**
+ * struct lp855x_platform_data
+ * @name : Backlight driver name. If it is not defined, default name is set.
+ * @mode : brightness control by pwm or lp855x register
+ * @device_control : value of DEVICE CONTROL register
+ * @initial_brightness : initial value of backlight brightness
+ * @pwm_data : platform specific pwm generation functions.
+		Only valid when mode is PWM_BASED.
+ * @load_new_rom_data :
+	0 : use default configuration data
+	1 : update values of eeprom or eprom registers on loading driver
+ * @size_program : total size of lp855x_rom_data
+ * @rom_data : list of new eeprom/eprom registers
+ */
+struct lp855x_platform_data {
+	char *name;
+	enum lp855x_brightness_ctrl_mode mode;
+	u8 device_control;
+	int initial_brightness;
+	struct lp855x_pwm_data pwm_data;
+	u8 load_new_rom_data;
+	int size_program;
+	struct lp855x_rom_data *rom_data;
+};
+
+#endif
diff --git a/include/linux/magic.h b/include/linux/magic.h
index b7ed4759dbb2..e15192cb9cf4 100644
--- a/include/linux/magic.h
+++ b/include/linux/magic.h
@@ -9,7 +9,6 @@
 #define CRAMFS_MAGIC		0x28cd3d45	/* some random number */
 #define CRAMFS_MAGIC_WEND	0x453dcd28	/* magic number with the wrong endianess */
 #define DEBUGFS_MAGIC          0x64626720
-#define SYSFS_MAGIC		0x62656572
 #define SECURITYFS_MAGIC	0x73636673
 #define SELINUX_MAGIC		0xf97cff8c
 #define RAMFS_MAGIC		0x858458f6	/* some random number */
@@ -27,7 +26,6 @@
 #define HPFS_SUPER_MAGIC	0xf995e849
 #define ISOFS_SUPER_MAGIC	0x9660
 #define JFFS2_SUPER_MAGIC	0x72b6
-#define ANON_INODE_FS_MAGIC	0x09041934
 #define PSTOREFS_MAGIC		0x6165676C
 
 #define MINIX_SUPER_MAGIC	0x137F		/* minix v1 fs, 14 char names */
@@ -40,7 +38,6 @@
 #define NCP_SUPER_MAGIC		0x564c		/* Guess, what 0x564c is :-) */
 #define NFS_SUPER_MAGIC		0x6969
 #define OPENPROM_SUPER_MAGIC	0x9fa1
-#define PROC_SUPER_MAGIC	0x9fa0
 #define QNX4_SUPER_MAGIC	0x002f		/* qnx4 fs detection */
 #define QNX6_SUPER_MAGIC	0x68191122	/* qnx6 fs detection */
 
@@ -52,15 +49,24 @@
 #define REISER2FS_JR_SUPER_MAGIC_STRING	"ReIsEr3Fs"
 
 #define SMB_SUPER_MAGIC		0x517B
-#define USBDEVICE_SUPER_MAGIC	0x9fa2
 #define CGROUP_SUPER_MAGIC	0x27e0eb
 
-#define FUTEXFS_SUPER_MAGIC	0xBAD1DEA
 
 #define STACK_END_MAGIC		0x57AC6E9D
 
+#define V9FS_MAGIC		0x01021997
+
+#define BDEVFS_MAGIC            0x62646576
+#define BINFMTFS_MAGIC          0x42494e4d
 #define DEVPTS_SUPER_MAGIC	0x1cd1
+#define FUTEXFS_SUPER_MAGIC	0xBAD1DEA
+#define PIPEFS_MAGIC            0x50495045
+#define PROC_SUPER_MAGIC	0x9fa0
 #define SOCKFS_MAGIC		0x534F434B
-#define V9FS_MAGIC		0x01021997
+#define SYSFS_MAGIC		0x62656572
+#define USBDEVICE_SUPER_MAGIC	0x9fa2
+#define MTD_INODE_FS_MAGIC      0x11307854
+#define ANON_INODE_FS_MAGIC	0x09041934
+
 
 #endif /* __LINUX_MAGIC_H__ */
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 7330742e7973..a6fabdfd34c5 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -111,7 +111,7 @@ extern unsigned int kobjsize(const void *objp);
 #define VM_HUGEPAGE	0x01000000	/* MADV_HUGEPAGE marked this vma */
 #endif
 #define VM_INSERTPAGE	0x02000000	/* The vma has had "vm_insert_page()" done on it */
-#define VM_ALWAYSDUMP	0x04000000	/* Always include in core dumps */
+#define VM_NODUMP	0x04000000	/* Do not include in the core dump */
 
 #define VM_CAN_NONLINEAR 0x08000000	/* Has ->fault & does nonlinear pages */
 #define VM_MIXEDMAP	0x10000000	/* Can contain "struct page" and pure PFN pages */
diff --git a/include/linux/mmc/ioctl.h b/include/linux/mmc/ioctl.h
index 8fa5bc5f8059..1f5e68923929 100644
--- a/include/linux/mmc/ioctl.h
+++ b/include/linux/mmc/ioctl.h
@@ -1,5 +1,8 @@
 #ifndef LINUX_MMC_IOCTL_H
 #define LINUX_MMC_IOCTL_H
+
+#include <linux/types.h>
+
 struct mmc_ioc_cmd {
 	/* Implies direction of data.  true = write, false = read */
 	int write_flag;
diff --git a/include/linux/nmi.h b/include/linux/nmi.h
index 2d304efc89df..db50840e6355 100644
--- a/include/linux/nmi.h
+++ b/include/linux/nmi.h
@@ -14,7 +14,7 @@
  * may be used to reset the timeout - for code which intentionally
  * disables interrupts for a long time. This call is stateless.
  */
-#if defined(ARCH_HAS_NMI_WATCHDOG) || defined(CONFIG_HARDLOCKUP_DETECTOR)
+#if defined(CONFIG_HAVE_NMI_WATCHDOG) || defined(CONFIG_HARDLOCKUP_DETECTOR)
 #include <asm/nmi.h>
 extern void touch_nmi_watchdog(void);
 #else
diff --git a/include/linux/pipe_fs_i.h b/include/linux/pipe_fs_i.h
index 77257c92155a..6d626ff0cfd0 100644
--- a/include/linux/pipe_fs_i.h
+++ b/include/linux/pipe_fs_i.h
@@ -1,8 +1,6 @@
 #ifndef _LINUX_PIPE_FS_I_H
 #define _LINUX_PIPE_FS_I_H
 
-#define PIPEFS_MAGIC 0x50495045
-
 #define PIPE_DEF_BUFFERS	16
 
 #define PIPE_BUF_FLAG_LRU	0x01	/* page is on the LRU */
diff --git a/include/linux/poll.h b/include/linux/poll.h
index cf40010ce0cd..48fe8bc398d1 100644
--- a/include/linux/poll.h
+++ b/include/linux/poll.h
@@ -32,21 +32,46 @@ struct poll_table_struct;
  */
 typedef void (*poll_queue_proc)(struct file *, wait_queue_head_t *, struct poll_table_struct *);
 
+/*
+ * Do not touch the structure directly, use the access functions
+ * poll_does_not_wait() and poll_requested_events() instead.
+ */
 typedef struct poll_table_struct {
-	poll_queue_proc qproc;
-	unsigned long key;
+	poll_queue_proc _qproc;
+	unsigned long _key;
 } poll_table;
 
 static inline void poll_wait(struct file * filp, wait_queue_head_t * wait_address, poll_table *p)
 {
-	if (p && wait_address)
-		p->qproc(filp, wait_address, p);
+	if (p && p->_qproc && wait_address)
+		p->_qproc(filp, wait_address, p);
+}
+
+/*
+ * Return true if it is guaranteed that poll will not wait. This is the case
+ * if the poll() of another file descriptor in the set got an event, so there
+ * is no need for waiting.
+ */
+static inline bool poll_does_not_wait(const poll_table *p)
+{
+	return p == NULL || p->_qproc == NULL;
+}
+
+/*
+ * Return the set of events that the application wants to poll for.
+ * This is useful for drivers that need to know whether a DMA transfer has
+ * to be started implicitly on poll(). You typically only want to do that
+ * if the application is actually polling for POLLIN and/or POLLOUT.
+ */
+static inline unsigned long poll_requested_events(const poll_table *p)
+{
+	return p ? p->_key : ~0UL;
 }
 
 static inline void init_poll_funcptr(poll_table *pt, poll_queue_proc qproc)
 {
-	pt->qproc = qproc;
-	pt->key   = ~0UL; /* all events enabled */
+	pt->_qproc = qproc;
+	pt->_key   = ~0UL; /* all events enabled */
 }
 
 struct poll_table_entry {
diff --git a/include/linux/prctl.h b/include/linux/prctl.h
index a0413ac3abe8..e0cfec2490aa 100644
--- a/include/linux/prctl.h
+++ b/include/linux/prctl.h
@@ -121,4 +121,7 @@
 #define PR_SET_PTRACER 0x59616d61
 # define PR_SET_PTRACER_ANY ((unsigned long)-1)
 
+#define PR_SET_CHILD_SUBREAPER 36
+#define PR_GET_CHILD_SUBREAPER 37
+
 #endif /* _LINUX_PRCTL_H */
diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h
index c2f1f6a5fcb8..407c678d2e30 100644
--- a/include/linux/ptrace.h
+++ b/include/linux/ptrace.h
@@ -51,20 +51,6 @@
 #define PTRACE_INTERRUPT	0x4207
 #define PTRACE_LISTEN		0x4208
 
-/* flags in @data for PTRACE_SEIZE */
-#define PTRACE_SEIZE_DEVEL	0x80000000 /* temp flag for development */
-
-/* options set using PTRACE_SETOPTIONS */
-#define PTRACE_O_TRACESYSGOOD	0x00000001
-#define PTRACE_O_TRACEFORK	0x00000002
-#define PTRACE_O_TRACEVFORK	0x00000004
-#define PTRACE_O_TRACECLONE	0x00000008
-#define PTRACE_O_TRACEEXEC	0x00000010
-#define PTRACE_O_TRACEVFORKDONE	0x00000020
-#define PTRACE_O_TRACEEXIT	0x00000040
-
-#define PTRACE_O_MASK		0x0000007f
-
 /* Wait extended result codes for the above trace options.  */
 #define PTRACE_EVENT_FORK	1
 #define PTRACE_EVENT_VFORK	2
@@ -72,7 +58,19 @@
 #define PTRACE_EVENT_EXEC	4
 #define PTRACE_EVENT_VFORK_DONE	5
 #define PTRACE_EVENT_EXIT	6
-#define PTRACE_EVENT_STOP	7
+/* Extended result codes which enabled by means other than options.  */
+#define PTRACE_EVENT_STOP	128
+
+/* Options set using PTRACE_SETOPTIONS or using PTRACE_SEIZE @data param */
+#define PTRACE_O_TRACESYSGOOD	1
+#define PTRACE_O_TRACEFORK	(1 << PTRACE_EVENT_FORK)
+#define PTRACE_O_TRACEVFORK	(1 << PTRACE_EVENT_VFORK)
+#define PTRACE_O_TRACECLONE	(1 << PTRACE_EVENT_CLONE)
+#define PTRACE_O_TRACEEXEC	(1 << PTRACE_EVENT_EXEC)
+#define PTRACE_O_TRACEVFORKDONE	(1 << PTRACE_EVENT_VFORK_DONE)
+#define PTRACE_O_TRACEEXIT	(1 << PTRACE_EVENT_EXIT)
+
+#define PTRACE_O_MASK		0x0000007f
 
 #include <asm/ptrace.h>
 
@@ -88,13 +86,12 @@
 #define PT_SEIZED	0x00010000	/* SEIZE used, enable new behavior */
 #define PT_PTRACED	0x00000001
 #define PT_DTRACE	0x00000002	/* delayed trace (used on m68k, i386) */
-#define PT_TRACESYSGOOD	0x00000004
-#define PT_PTRACE_CAP	0x00000008	/* ptracer can follow suid-exec */
+#define PT_PTRACE_CAP	0x00000004	/* ptracer can follow suid-exec */
 
+#define PT_OPT_FLAG_SHIFT	3
 /* PT_TRACE_* event enable flags */
-#define PT_EVENT_FLAG_SHIFT	4
-#define PT_EVENT_FLAG(event)	(1 << (PT_EVENT_FLAG_SHIFT + (event) - 1))
-
+#define PT_EVENT_FLAG(event)	(1 << (PT_OPT_FLAG_SHIFT + (event)))
+#define PT_TRACESYSGOOD		PT_EVENT_FLAG(0)
 #define PT_TRACE_FORK		PT_EVENT_FLAG(PTRACE_EVENT_FORK)
 #define PT_TRACE_VFORK		PT_EVENT_FLAG(PTRACE_EVENT_VFORK)
 #define PT_TRACE_CLONE		PT_EVENT_FLAG(PTRACE_EVENT_CLONE)
@@ -102,8 +99,6 @@
 #define PT_TRACE_VFORK_DONE	PT_EVENT_FLAG(PTRACE_EVENT_VFORK_DONE)
 #define PT_TRACE_EXIT		PT_EVENT_FLAG(PTRACE_EVENT_EXIT)
 
-#define PT_TRACE_MASK	0x000003f4
-
 /* single stepping state bits (used on ARM and PA-RISC) */
 #define PT_SINGLESTEP_BIT	31
 #define PT_SINGLESTEP		(1<<PT_SINGLESTEP_BIT)
@@ -199,9 +194,10 @@ static inline void ptrace_event(int event, unsigned long message)
 	if (unlikely(ptrace_event_enabled(current, event))) {
 		current->ptrace_message = message;
 		ptrace_notify((event << 8) | SIGTRAP);
-	} else if (event == PTRACE_EVENT_EXEC && unlikely(current->ptrace)) {
+	} else if (event == PTRACE_EVENT_EXEC) {
 		/* legacy EXEC report via SIGTRAP */
-		send_sig(SIGTRAP, current, 0);
+		if ((current->ptrace & (PT_PTRACED|PT_SEIZED)) == PT_PTRACED)
+			send_sig(SIGTRAP, current, 0);
 	}
 }
 
diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h
index 937217425c47..2c62594b67dd 100644
--- a/include/linux/rcupdate.h
+++ b/include/linux/rcupdate.h
@@ -418,7 +418,7 @@ extern int rcu_my_thread_group_empty(void);
  */
 #define rcu_lockdep_assert(c, s)					\
 	do {								\
-		static bool __warned;					\
+		static bool __section(.data.unlikely) __warned;		\
 		if (debug_lockdep_rcu_enabled() && !__warned && !(c)) {	\
 			__warned = true;				\
 			lockdep_rcu_suspicious(__FILE__, __LINE__, s);	\
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 0c147a4260a5..0c3854b0d4b1 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -553,6 +553,18 @@ struct signal_struct {
 	int			group_stop_count;
 	unsigned int		flags; /* see SIGNAL_* flags below */
 
+	/*
+	 * PR_SET_CHILD_SUBREAPER marks a process, like a service
+	 * manager, to re-parent orphan (double-forking) child processes
+	 * to this process instead of 'init'. The service manager is
+	 * able to receive SIGCHLD signals and is able to investigate
+	 * the process until it calls wait(). All children of this
+	 * process will inherit a flag if they should look for a
+	 * child_subreaper process at exit.
+	 */
+	unsigned int		is_child_subreaper:1;
+	unsigned int		has_child_subreaper:1;
+
 	/* POSIX.1b Interval Timers */
 	struct list_head posix_timers;
 
diff --git a/include/linux/seq_file.h b/include/linux/seq_file.h
index 44f1514b00ba..54e5ae7f8adc 100644
--- a/include/linux/seq_file.h
+++ b/include/linux/seq_file.h
@@ -121,9 +121,12 @@ int single_release(struct inode *, struct file *);
 void *__seq_open_private(struct file *, const struct seq_operations *, int);
 int seq_open_private(struct file *, const struct seq_operations *, int);
 int seq_release_private(struct inode *, struct file *);
+int seq_put_decimal_ull(struct seq_file *m, char delimiter,
+			unsigned long long num);
+int seq_put_decimal_ll(struct seq_file *m, char delimiter,
+			long long num);
 
 #define SEQ_START_TOKEN ((void *)1)
-
 /*
  * Helpers for iteration over list_head-s in seq_files
  */
diff --git a/include/linux/tracehook.h b/include/linux/tracehook.h
index a71a2927a6a0..51bd91d911c3 100644
--- a/include/linux/tracehook.h
+++ b/include/linux/tracehook.h
@@ -54,12 +54,12 @@ struct linux_binprm;
 /*
  * ptrace report for syscall entry and exit looks identical.
  */
-static inline void ptrace_report_syscall(struct pt_regs *regs)
+static inline int ptrace_report_syscall(struct pt_regs *regs)
 {
 	int ptrace = current->ptrace;
 
 	if (!(ptrace & PT_PTRACED))
-		return;
+		return 0;
 
 	ptrace_notify(SIGTRAP | ((ptrace & PT_TRACESYSGOOD) ? 0x80 : 0));
 
@@ -72,6 +72,8 @@ static inline void ptrace_report_syscall(struct pt_regs *regs)
 		send_sig(current->exit_code, current, 1);
 		current->exit_code = 0;
 	}
+
+	return fatal_signal_pending(current);
 }
 
 /**
@@ -96,8 +98,7 @@ static inline void ptrace_report_syscall(struct pt_regs *regs)
 static inline __must_check int tracehook_report_syscall_entry(
 	struct pt_regs *regs)
 {
-	ptrace_report_syscall(regs);
-	return 0;
+	return ptrace_report_syscall(regs);
 }
 
 /**