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);
 }
 
 /**