M_PINSYSCALL is for pinsyscalls(2), not pinsyscall(2)

add a malloc type for pinsyscall arrays

Bring malloc(9) and <sys/malloc.h> into sync for M_* entries, such
that the former's text comes from the latter's comments. Rationalize
capitalization, whitespace, and plural-vs-singular. Mark thin

Bring malloc(9) and <sys/malloc.h> into sync for M_* entries, such
that the former's text comes from the latter's comments. Rationalize
capitalization, whitespace, and plural-vs-singular. Mark things for
for automation in the future.

Prompted by loss of sync from the addition of M_IFGROUP and M_PF
Previously worked up in discussion with schwarze@ and jmc@

ok deraadt@, miod@, jmc@

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Document M_LOG flag; from Peter J. Philipp.

Delete unused/obsolete M_* type values.

ok miod@ mpi@

Add lock stack trace saving for witness(4).

This lets witness(4) save a stack trace on each lock acquisition.
The saved traces can be viewed in ddb(4) when showing the currently
held locks, which ma

Add lock stack trace saving for witness(4).

This lets witness(4) save a stack trace on each lock acquisition.
The saved traces can be viewed in ddb(4) when showing the currently
held locks, which may help when debugging incorrect locking.

Sample output:

ddb{0}> show all locks
Process 63836 (rm) thread 0xffff8000221e52c8 (435004)
exclusive rrwlock inode r = 0 (0xfffffd8119a092c0) locked @ /usr/src/sys/ufs/ufs/ufs_vnops.c:1547
#0 witness_lock+0x419
#1 _rw_enter+0x2bb
#2 _rrw_enter+0x42
#3 VOP_LOCK+0x3f
#4 vn_lock+0x36
#5 vfs_lookup+0xa1
#6 namei+0x2b3
#7 dounlinkat+0x85
#8 syscall+0x338
#9 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 1 (0xffffffff81e6a5f0) locked @ /usr/src/sys/arch/amd64/amd64/intr.c:525
#0 witness_lock+0x419
#1 syscall+0x2b6
#2 Xsyscall+0x128

The saving adds overhead, so it is not enabled by default. It can be
taken into use by setting sysctl kern.witness.locktrace=1 at runtime
or by defining WITNESS_LOCKTRACE in the kernel configuration.

Feedback and OK anton@

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Add missing types, and fix incorrect names.

Remove MALLOC_DEBUG left overs.

From Klemens Nanni.

Allocate IPv6 reassembly structs using pools instead of malloc(),
and drop the now redundant allocation type M_FTABLE.

OK mikeb@, bluhm@, mpi@

M_COUNTERS is a thing

Rename M_RTABLE bucket into "rtable" to match the code and kill unused
M_BWMETER.

ok mikeb@

document when to pass free() a size, and hey -- if it is impossible track
it down, that is ok, you can pass 0. (but it is slower)

tweak wording and update panic messages

Remove userland bits related to the crypto(4) interface; ok deraadt

tweak previous;

document mallocarray like malloc throughout the page. better describe
what M_CANFAIL means for each.

motivation and initial diff from doug hogan

add a size argument to free. will be used soon, but for now default to 0.
after discussions with beck deraadt kettenis.

remove bluetooth malloc types

Oops, fix man page typo.

thx Jean-Philippe Ouellet

Add mallocarray(9)

While here, change malloc(9)'s size argument from "unsigned long" to
"size_t".

ok tedu

Sync malloc(9) M_* types with sys/malloc.h

tweak previous; help/ok dlg

CONTEXT for malloc.

feels a bit clumsy, hopefully jmc can help.

free(null) works

Replace old-fashioned .Fd by new-fangled .In for #include lines.
Diff from Jan Klemkow <j dot klemkow at wemelug dot de> on tech@.
No objection from jmc@ against this type of change.