diff --git a/libc/kernel/common/asm-generic/siginfo.h b/libc/kernel/common/asm-generic/siginfo.h
index d6743a7..6ba48a0 100644
--- a/libc/kernel/common/asm-generic/siginfo.h
+++ b/libc/kernel/common/asm-generic/siginfo.h
@@ -7,207 +7,222 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_GENERIC_SIGINFO_H
 #define _ASM_GENERIC_SIGINFO_H
-
 #include <linux/compiler.h>
 #include <linux/types.h>
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 typedef union sigval {
  int sival_int;
  void __user *sival_ptr;
 } sigval_t;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #ifndef __ARCH_SI_PREAMBLE_SIZE
 #define __ARCH_SI_PREAMBLE_SIZE (3 * sizeof(int))
 #endif
-
 #define SI_MAX_SIZE 128
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #ifndef SI_PAD_SIZE
 #define SI_PAD_SIZE ((SI_MAX_SIZE - __ARCH_SI_PREAMBLE_SIZE) / sizeof(int))
 #endif
-
 #ifndef __ARCH_SI_UID_T
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __ARCH_SI_UID_T uid_t
 #endif
-
 #ifndef __ARCH_SI_BAND_T
 #define __ARCH_SI_BAND_T long
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
-
 #ifndef HAVE_ARCH_SIGINFO_T
-
 typedef struct siginfo {
  int si_signo;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  int si_errno;
  int si_code;
-
  union {
  int _pad[SI_PAD_SIZE];
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  struct {
  pid_t _pid;
  __ARCH_SI_UID_T _uid;
  } _kill;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  struct {
  timer_t _tid;
  int _overrun;
  char _pad[sizeof( __ARCH_SI_UID_T) - sizeof(int)];
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  sigval_t _sigval;
  int _sys_private;
  } _timer;
-
  struct {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  pid_t _pid;
  __ARCH_SI_UID_T _uid;
  sigval_t _sigval;
  } _rt;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  struct {
  pid_t _pid;
  __ARCH_SI_UID_T _uid;
  int _status;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  clock_t _utime;
  clock_t _stime;
  } _sigchld;
-
  struct {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  void __user *_addr;
 #ifdef __ARCH_SI_TRAPNO
  int _trapno;
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  } _sigfault;
-
  struct {
  __ARCH_SI_BAND_T _band;
  int _fd;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  } _sigpoll;
  } _sifields;
 } siginfo_t;
-
 #endif
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define si_pid _sifields._kill._pid
 #define si_uid _sifields._kill._uid
 #define si_tid _sifields._timer._tid
 #define si_overrun _sifields._timer._overrun
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define si_sys_private _sifields._timer._sys_private
 #define si_status _sifields._sigchld._status
 #define si_utime _sifields._sigchld._utime
 #define si_stime _sifields._sigchld._stime
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define si_value _sifields._rt._sigval
 #define si_int _sifields._rt._sigval.sival_int
 #define si_ptr _sifields._rt._sigval.sival_ptr
 #define si_addr _sifields._sigfault._addr
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #ifdef __ARCH_SI_TRAPNO
 #define si_trapno _sifields._sigfault._trapno
 #endif
 #define si_band _sifields._sigpoll._band
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define si_fd _sifields._sigpoll._fd
-
 #define __SI_KILL 0
 #define __SI_TIMER 0
 #define __SI_POLL 0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __SI_FAULT 0
 #define __SI_CHLD 0
 #define __SI_RT 0
 #define __SI_MESGQ 0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __SI_CODE(T,N) (N)
-
 #define SI_USER 0  
 #define SI_KERNEL 0x80  
 #define SI_QUEUE -1  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SI_TIMER __SI_CODE(__SI_TIMER,-2)  
 #define SI_MESGQ __SI_CODE(__SI_MESGQ,-3)  
 #define SI_ASYNCIO -4  
 #define SI_SIGIO -5  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SI_TKILL -6  
 #define SI_DETHREAD -7  
-
 #define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
 #define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ILL_ILLOPC (__SI_FAULT|1)  
 #define ILL_ILLOPN (__SI_FAULT|2)  
 #define ILL_ILLADR (__SI_FAULT|3)  
 #define ILL_ILLTRP (__SI_FAULT|4)  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ILL_PRVOPC (__SI_FAULT|5)  
 #define ILL_PRVREG (__SI_FAULT|6)  
 #define ILL_COPROC (__SI_FAULT|7)  
 #define ILL_BADSTK (__SI_FAULT|8)  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define NSIGILL 8
-
 #define FPE_INTDIV (__SI_FAULT|1)  
 #define FPE_INTOVF (__SI_FAULT|2)  
 #define FPE_FLTDIV (__SI_FAULT|3)  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define FPE_FLTOVF (__SI_FAULT|4)  
 #define FPE_FLTUND (__SI_FAULT|5)  
 #define FPE_FLTRES (__SI_FAULT|6)  
 #define FPE_FLTINV (__SI_FAULT|7)  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define FPE_FLTSUB (__SI_FAULT|8)  
 #define NSIGFPE 8
-
 #define SEGV_MAPERR (__SI_FAULT|1)  
 #define SEGV_ACCERR (__SI_FAULT|2)  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define NSIGSEGV 2
-
 #define BUS_ADRALN (__SI_FAULT|1)  
 #define BUS_ADRERR (__SI_FAULT|2)  
 #define BUS_OBJERR (__SI_FAULT|3)  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define NSIGBUS 3
-
 #define TRAP_BRKPT (__SI_FAULT|1)  
 #define TRAP_TRACE (__SI_FAULT|2)  
 #define NSIGTRAP 2
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define CLD_EXITED (__SI_CHLD|1)  
 #define CLD_KILLED (__SI_CHLD|2)  
 #define CLD_DUMPED (__SI_CHLD|3)  
 #define CLD_TRAPPED (__SI_CHLD|4)  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define CLD_STOPPED (__SI_CHLD|5)  
 #define CLD_CONTINUED (__SI_CHLD|6)  
 #define NSIGCHLD 6
-
 #define POLL_IN (__SI_POLL|1)  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define POLL_OUT (__SI_POLL|2)  
 #define POLL_MSG (__SI_POLL|3)  
 #define POLL_ERR (__SI_POLL|4)  
 #define POLL_PRI (__SI_POLL|5)  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define POLL_HUP (__SI_POLL|6)  
 #define NSIGPOLL 6
-
 #define SIGEV_SIGNAL 0  
 #define SIGEV_NONE 1  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SIGEV_THREAD 2  
 #define SIGEV_THREAD_ID 4  
-
 #ifndef __ARCH_SIGEV_PREAMBLE_SIZE
 #define __ARCH_SIGEV_PREAMBLE_SIZE (sizeof(int) * 2 + sizeof(sigval_t))
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
-
 #define SIGEV_MAX_SIZE 64
 #define SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE - __ARCH_SIGEV_PREAMBLE_SIZE)   / sizeof(int))
-
 typedef struct sigevent {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  sigval_t sigev_value;
  int sigev_signo;
  int sigev_notify;
  union {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  int _pad[SIGEV_PAD_SIZE];
  int _tid;
-
  struct {
  void (*_function)(sigval_t);
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  void *_attribute;
  } _sigev_thread;
  } _sigev_un;
 } sigevent_t;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define sigev_notify_function _sigev_un._sigev_thread._function
 #define sigev_notify_attributes _sigev_un._sigev_thread._attribute
 #define sigev_notify_thread_id _sigev_un._tid
-
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */