git: kernel - Major signal path adjustments to fix races, tsleep race fixes, +more

[Matthew Dillon]

commit 4643740aa6f3eac7d3dfab05967ec55b5d8ba984
Author: Matthew Dillon <dillon at apollo.backplane.com>
Date:   Tue Nov 15 15:23:41 2011 -0800

    kernel - Major signal path adjustments to fix races, tsleep race fixes, +more
    
    * Refactor the signal code to properly hold the lp->lwp_token.  In
      particular the ksignal() and lwp_signotify() paths.
    
    * The tsleep() path must also hold lp->lwp_token to properly handle
      lp->lwp_stat states and interlocks.
    
    * Refactor the timeout code in tsleep() to ensure that endtsleep() is only
      called from the proper context, and fix races between endtsleep() and
      lwkt_switch().
    
    * Rename proc->p_flag to proc->p_flags
    
    * Rename lwp->lwp_flag to lwp->lwp_flags
    
    * Add lwp->lwp_mpflags and move flags which require atomic ops (are adjusted
      when not the current thread) to the new field.
    
    * Add td->td_mpflags and move flags which require atomic ops (are adjusted
      when not the current thread) to the new field.
    
    * Add some freeze testing code to the x86-64 trap code (default disabled).

Summary of changes:
 lib/libkvm/kvm_proc.c                              |    4 +-
 sys/ddb/db_ps.c                                    |    6 +-
 sys/dev/raid/vinum/.gdbinit.kernel                 |   12 +-
 sys/dev/raid/vinum/vinumdaemon.c                   |    2 +-
 sys/emulation/43bsd/43bsd_signal.c                 |    2 +-
 .../linux/i386/linprocfs/linprocfs_vnops.c         |    2 +-
 sys/emulation/linux/i386/linux_ptrace.c            |    6 +-
 sys/emulation/linux/i386/linux_sysvec.c            |    6 +-
 sys/emulation/linux/linux_file.c                   |    2 +-
 sys/emulation/ndis/ntoskrnl_var.h                  |    2 +-
 sys/kern/init_main.c                               |    4 +-
 sys/kern/kern_acct.c                               |    2 +-
 sys/kern/kern_checkpoint.c                         |    2 +-
 sys/kern/kern_clock.c                              |   14 +-
 sys/kern/kern_descrip.c                            |   16 +-
 sys/kern/kern_exec.c                               |   18 +-
 sys/kern/kern_exit.c                               |   40 ++--
 sys/kern/kern_fork.c                               |   18 +-
 sys/kern/kern_intr.c                               |    4 +-
 sys/kern/kern_jail.c                               |    2 +-
 sys/kern/kern_kinfo.c                              |    8 +-
 sys/kern/kern_kthread.c                            |   15 +-
 sys/kern/kern_ktrace.c                             |    2 +-
 sys/kern/kern_proc.c                               |    4 +-
 sys/kern/kern_prot.c                               |    6 +-
 sys/kern/kern_resource.c                           |    5 +-
 sys/kern/kern_sig.c                                |  230 +++++++++-----------
 sys/kern/kern_synch.c                              |  179 ++++++---------
 sys/kern/kern_threads.c                            |    4 +-
 sys/kern/kern_time.c                               |    4 +-
 sys/kern/kern_timeout.c                            |    2 +-
 sys/kern/kern_upcall.c                             |    8 +-
 sys/kern/lwkt_thread.c                             |   18 +-
 sys/kern/subr_prf.c                                |    5 +-
 sys/kern/subr_prof.c                               |    2 +-
 sys/kern/subr_taskqueue.c                          |    4 +-
 sys/kern/sys_generic.c                             |    2 +-
 sys/kern/sys_process.c                             |   19 +-
 sys/kern/tty.c                                     |   16 +-
 sys/kern/tty_pty.c                                 |    3 +-
 sys/kern/tty_tty.c                                 |    5 +-
 sys/kern/usched_bsd4.c                             |   35 ++--
 sys/kern/usched_dummy.c                            |   16 +-
 sys/kern/vfs_journal.c                             |    4 +-
 sys/net/if.c                                       |    2 +-
 sys/net/netisr.c                                   |    2 +-
 sys/netproto/smb/smb_subr.c                        |    2 +-
 sys/platform/pc32/i386/db_trace.c                  |    2 +-
 sys/platform/pc32/i386/machdep.c                   |    2 +-
 sys/platform/pc32/i386/trap.c                      |   40 ++--
 sys/platform/pc64/x86_64/machdep.c                 |    2 +-
 sys/platform/pc64/x86_64/trap.c                    |   62 ++++--
 sys/platform/vkernel/i386/cpu_regs.c               |    2 +-
 sys/platform/vkernel/i386/trap.c                   |   40 ++--
 sys/platform/vkernel64/x86_64/cpu_regs.c           |    2 +-
 sys/platform/vkernel64/x86_64/trap.c               |   40 ++--
 sys/sys/proc.h                                     |   91 ++++----
 sys/sys/signal2.h                                  |    2 +-
 sys/sys/thread.h                                   |   39 ++--
 sys/sys/tty.h                                      |    2 +-
 sys/vfs/procfs/procfs.h                            |    2 +-
 sys/vfs/procfs/procfs_ctl.c                        |   24 +-
 sys/vfs/procfs/procfs_dbregs.c                     |    4 +-
 sys/vfs/procfs/procfs_fpregs.c                     |    4 +-
 sys/vfs/procfs/procfs_map.c                        |    2 +-
 sys/vfs/procfs/procfs_mem.c                        |    4 +-
 sys/vfs/procfs/procfs_regs.c                       |    4 +-
 sys/vfs/procfs/procfs_status.c                     |    7 +-
 sys/vfs/procfs/procfs_type.c                       |    2 +-
 sys/vfs/procfs/procfs_vnops.c                      |    8 +-
 sys/vm/vm_fault.c                                  |   11 +-
 sys/vm/vm_glue.c                                   |   10 +-
 sys/vm/vm_meter.c                                  |   10 +-
 sys/vm/vm_pageout.c                                |    6 +-
 74 files changed, 586 insertions(+), 604 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/4643740aa6f3eac7d3dfab05967ec55b5d8ba984


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