CVS log for src/usr.bin/pmap/pmap.c

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Default branch: MAIN

- Shrink namecache entries to 64 bytes on 32-bit platforms and use 32-bit
  key values there for speed (remains 128 bytes & 64-bits on _LP64).
- Comments.

Add -t option to print pmap as underlying RB tree.
Report gap/maxgap fields when dumping vm_map structure.

Restrict to root any command option that prints kernel addresses.

Merge changes from current as of 20200406

- Don't copy the entire namecache only to look up a few names.  Walk the
  data structures like cache_revlookup().

- nchash and mb_map are gone.  module_map replaced lkm_map.

Sync with HEAD

handle field rename.

pmap: Refresh debugging facilities

Print vm_aslr_delta_mmap from 'struct vmspace'.
Print the WANTVA bit of 'flags' from 'struct vm_map'.
Replace %x with %#x, this improves readability of hex vs dec numbers.

Sponsored by <The NetBSD Foundation>

use ecalloc

Resync to 2012-11-19 00:00:00 UTC

sync with head

fix format string

get rid of not used uvm_map flag (UVM_MAP_KMAPENT)

sync with head

G/C VM_MAP_INTRSAFE flag

extending vmem(9) to be able to allocated resources for it's own needs.
simplifying uvm_map handling (no special kernel entries anymore no relocking)
make malloc(9) a thin wrapper around kmem(9)
(with private interface for interrupt safety reasons)

releng@ acknowledged

Consistently use "%#"PRIxVADDR to print VA, not "0x%#"PRIxVADDR
or "0x%"PRIxVADDR etc.  Noticed by Y.Sugahara.

Catchup with rmind-uvmplock merge.

an_ref is now a uintptr_t.

sync to netbsd-5

Fix typo in previous.

Merge from matt-nb5-mips64; adapt to vaddr_t / vsize_t format specifiers.

Fix some vaddr_t/vaddr_t type droppings.

Sync with HEAD.

Third (and last) commit. See http://mail-index.netbsd.org/source-changes/2009/05/13/msg221222.html

Fix WARNS=4 issues (-Wcast-qual -Wextra -Wsign-compare)

handle 64 bit time_t/dev_t

sync with head.

Remove clause 3 and 4 from TNF licenses

sync with HEAD

remove no longer necessary lockdebug hacks.

No need to list every file system type in this file.

sync with HEAD

Merge from vmlocking:

- Split vnode::v_flag into three fields, depending on field locking.
- simple_lock -> kmutex in a few places.
- Fix some simple locking problems.

VM_MAP_BUSY, VM_MAP_WANTLOCK are no more.

file pmap.c was added on branch matt-mips64 on 2007-07-21 20:54:13 +0000

VM_MAP_BUSY, VM_MAP_WANTLOCK are no more.

Add read-only support for SGI's Extent File System.

Reviewed by pooka@.

Complete rename of hfsp to hfs, requested by thorpej.

Integrate apmlabel and HFS+ file system.

add casts.

"teach" about VT_PUFFS

remove "XXX = <struct simplelock>" from -D output.

Add preliminary support for System V Boot File System.
Written by UCHIYAMA Yasushi <uch@netbsd>.

Stub to pmap.c to avoid unhandled enumeration value error. Its only used
for printing purposes.

Will be modified later when UDF is finally committed after review.
Comitting has been put on halt due to dispute over a patch.

Initial addition of tmpfs, an efficient memory file-system.  This project
was developed as part of Google's Summer of Code 2005 program.  This
change adds the kernel code, the mount_tmpfs utility, a regression test
suite and does all other related changes to integrate these.

The file-system is still *experimental*.  Therefore, it is disabled by
default in all kernels.  However, as typically done, a commented-out
entry is added in them to ease its setup.

Note that I haven't commited the required mountd(8) changes to be able
to export tmpfs file-systems because NFS support is still very unstable
and because, before enabling it, I'd like to do some other changes.

OK'ed by my project mentor, William Studenmund (wrstuden@).

64 bit inode changes

Fix fallout from vm_anon changes

use vm_map_{min,max}() instead of dereferencing the vm_map pointer directly.
define and use vm_map_set{min,max}() for modifying these values.
remove the {min,max}_offset aliases for these vm_map fields to be more
namespace-friendly.  PR 26475.

sync with kernel.  (vm_map_entry::flags)

Add V_PTY

Deal with backing out of changes in:
http://mail-index.netbsd.org/source-changes/2004/01/29/0027.html

Lint police.

follow the kernel vm_map_entry allocation strategy change.

Don't assign NULL to an integer.

eliminate v_id.

strlcat

Build main.c with LOCKDEBUG defined so that it gets the larger kbit
definition.  Since we're now passing it into pmap.c which is already
compiled that way, it would be nice if it was the right size.

Also, fix a memset bug that caused a segmentation fault when printing
the kernel's vm_map.

Add some more intricate groveler options:

     -A address   Dumps the vm_amap structure found at address.

     -E address   Dumps the vm_map_entry structure found at address.

     -S address   Dumps the vmspace structure found at address.

     -V address   Dumps the vm_map structure found at address.

This required reorganizing the code a little, which led to some
cleanup (yay!).  These new methods are executed without any extra
privileges, so you need read access on /dev/mem or on the kernel core
into which you are digging.

This should be useful for, eg, examining amaps are corrupt when being
destroyed, which can cause a kernel panic (and, hence, are no longer
connected to a map entry, or the map entry is no longer connected to a
vm_map/vmspace).

The options in the man page have also been reorganized.

Add the capability to dump the struct vm_amap and the am_anon,
am_bckptr, am_slots, and am_anon data, if the vm_map_entry has an
amap.  This adds three new debug "bits" to the -D argument, so the
namei cache dumping "bit" has been moved up.

Also, change the * that gets emitted with -vv to indicate the number
of pages skipped and the size of the area (in kilobytes).

Clean up code in places, add some more (possible) submap names, make
better use of the submap names when dumping the kernel map, clean up
the "interface" between the main and LOCKDEBUG dependent pmap modules,
and make the heap identification work better.

Oops.  Missed some possible UVM_ET_IS*() macro uses.

Properly print the VM_MAP_TOPDOWN flag if it is set, document the
VM_MAP_TOPDOWN flag (and the VM_MAP_DYING flag, since it never got
documented before), minor tweak to one of the examples, and use the
UVM_ET_IS*() macros instead of doing the same work manually.

Make pmap work on LOCKDEBUG *and* non-LOCKDEBUG kernels (previously it
would fail in spectacular ways on LOCKDEBUG kernels) by compiling the
groveler code twice (the second time with LOCKDEBUG defined so that
the appropriate structures get larger in the right way).  We currently
decide if we are operating on a kernel with LOCKDEBUG enabled if the
kernel's vm_map has referential integrity between a few pointers
and/or values.

Also, if you use more than one -v, you get a * on a line by itself in
between gaps in entries.  It makes finding gaps much easier visually.

Avoid a trigraph, and fix printf formats.

Don't truncate the vm_map_entry offset to 32-bits when printing.

Provides better error messages from the symbol lookups (printing
merely "  == 1" is just *not* helpful).

Note which symbols were missing (better for bug reports, if anyone
files one :).

Make the kernel submap symbols optional (sparc, sparc64, most powerpc,
and the sh3 ports seem not to have a phys_map -- problem noted by
myself yesterday).

Oh, and a little misc lint cleanup while I'm here.

Print the contents of the aref (it's small and MI -- MD code here
would be horrific).

Handle the new VM_MAP_DYING flag (and adjust the VM_MAP_TOPDOWN bit).

Check to see if 0, 1, and 2 are properly "open" and try to "adjust" if
they're not.  Emit no warnings or errors here.

Provide names for the map and submaps when doing recursive verbose
ddb-style output.

Make error messages a little more informative.  Add -R option to
recurse into submaps (a kernel thing) as suggested by Chuck Cranor,
with the output from these entries indented.  Clean up and rework code
slightly, to make the recursion task much easier.  Also, add a note to
the BUGS section in the man page thats mentions that stuff "just won't
work right" unless pmap is reading from the proper kernel.

Add verbose support to the -l output, tweak verbose support for -d
output, and tweak the man page (running pmap(1) vs. the kernel_map can
have a *very* visible effect).

Unterminated comment.  Grr...

Move pmap(1) to /usr/bin (from /usr/sbin) where it belongs.