CVS log for src/sys/ddb/db_proc.c

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Pull up following revision(s) (requested by skrll in ticket #665):

	sys/ddb/db_proc.c: revision 1.16

Fix alignment of ddb 'ps/[lw]' output. LID matches PID and has more digits.

Fix alignment of ddb 'ps/[lw]' output. LID matches PID and has more digits.

Fix column alignment in ps/w output

Sync with HEAD.

For "ps/a" print all of p_comm instead of just the first 10 chars, add a
space after PID, left justify the command name.

Trailing whitespace

Merge changes from current as of 20200406

also print the LWP reference count.

Sync with head.

Correct PPID of "show all procs/n"

- Move the LW_RUNNING flag back into l_pflag: updating l_flag without lock
  in softint_dispatch() is risky.  May help with the "softint screwup"
  panic.

- Correct the memory barriers around zombies switching into oblivion.

Sync with head.

Hopefully fix some problems seen with MP support on non-x86, in particular
where curcpu() is defined as curlwp->l_cpu:

- mi_switch(): undo the ~2007ish optimisation to unlock curlwp before
  calling cpu_switchto().  It's not safe to let other actors mess with the
  LWP (in particular l->l_cpu) while it's still context switching.  This
  removes l->l_ctxswtch.

- Move the LP_RUNNING flag into l->l_flag and rename to LW_RUNNING since
  it's now covered by the LWP's lock.

- Ditch lwp_exit_switchaway() and just call mi_switch() instead.  Everything
  is in cache anyway so it wasn't buying much by trying to avoid saving old
  state.  This means cpu_switchto() will never be called with prevlwp ==
  NULL.

- Remove some KERNEL_LOCK handling which hasn't been needed for years.

Sync with HEAD

Sync with HEAD, resolve a couple of conflicts

no, should be dst

Don't overflow on the strings we read. Introduce db_read_string(), which
stops on '\0'. Probably this doesn't matter a lot because the read is
supposed to be safe, but let's not have bugs in the debugger.

Detected by kASan, via skrll@ on aarch64, by typing "ps/l" on DDB.

Like ddb(4) "ps/l", use '>' sign to indicate running LWPs for the /w
modifier.

Sync with HEAD.

sync with head

Fix GENERIC_SUN4U build.

Add:
usage: show proc [/a] [/p] address|pid
        /a == argument is an address of any lwp
	/p == argument is a pid [default]
From: Vladimir Kirillov proger at wilab dot org dot ua

Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.

sync with head.

Sync with HEAD.

file db_proc.c was added on branch jym-xensuspend on 2009-05-13 17:19:04 +0000

file db_proc.c was added on branch yamt-nfs-mp on 2009-05-04 08:12:32 +0000

file db_proc.c was added on branch nick-hppapmap on 2009-04-28 07:35:13 +0000

include <stdbool.h> if not _KERNEL, and don't include kauth.h if _KERNEL.

now crash builds on i386.

include ddb headers *after* sys/types.h or sys/param.h.

Make ddb compile and work in userspace. Mostly this is comprised of three
types of changes:

- Add a few new methods to replace stuff like p_find(), CPU_INFO_FOREACH.

- Use db_read_bytes() instead of accessing kernel structures directly,
  and similar changes.

- Add ifdef _KERNEL where the above hasn't been done, and an XXX comment.