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4053cae340
freebsd-dev/sys
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Don Lewis 4053cae340 Track all lock relationships instead of pruning direct relationships 
if an indirect relationship exists (keep both A->B->C and A->C).
This allows witness_checkorder() to use isitmychild() instead of
the much more expensive isitmydescendant() to check for valid lock
ordering.

Don't do an expensive tree walk to update the w_level values when
the tree is updated.  Only update the w_level values when using the
debugger to display the tree.

Nuke the experimental "witness_watch > 1" mode that only compared
w_level for the two locks.  This information is no longer maintained
at run time, and the use of isitmychild() in witness_checkorder
should bring performance close enough to the acceptable level that
this hack is not needed.

Report witness data structure allocation statistics under the
debug.witness sysctl.

Reviewed by:	jhb
MFC after:	30 days
2005-08-25 03:47:37 +00:00
..
alpha Move MINSIGSTKSZ from <machine/signal.h> to <machine/_limits.h> and rename 2005-08-20 16:44:41 +00:00
amd64 Pass the PDE from pmap_remove() to pmap_remove_page() so that the latter 2005-08-22 20:02:40 +00:00
arm Move MINSIGSTKSZ from <machine/signal.h> to <machine/_limits.h> and rename 2005-08-20 16:44:41 +00:00
boot Add a "comconsole_speed" loader variable that can be used to change 2005-08-18 01:39:43 +00:00
bsm For consistency with more system include files, add a trailing '_' to 2005-05-29 16:11:34 +00:00
cam Merge the dev_clone and dev_clone_cred event handlers into a single 2005-08-08 19:55:32 +00:00
coda Merge the dev_clone and dev_clone_cred event handlers into a single 2005-08-08 19:55:32 +00:00
compat Propagate rename of IFF_OACTIVE and IFF_RUNNING to IFF_DRV_OACTIVE and 2005-08-09 10:20:02 +00:00
conf Pad the strings sccs[], version[], and osrelease[] up to a minimum of 2005-08-19 01:49:15 +00:00
contrib Wrap the new world order in __FreeBSD__ to ease future imports. 2005-08-09 11:59:02 +00:00
crypto Add VIA/ACE "PadLock" support as a crypto(9) driver. 2005-08-18 00:30:22 +00:00
ddb Remove the need to forward declare statics by moving them around. 2005-08-10 07:08:14 +00:00
dev - Remove redundant assertions that the driver lock is not held in attach() 2005-08-24 20:28:56 +00:00
doc
fs Handle device drivers with D_NEEDGIANT in a way which does not 2005-08-17 08:19:52 +00:00
gdb check return value of gdb_rx_varhex 2005-03-28 18:31:18 +00:00
geom Verify if we can actually read the data at given offset. 2005-08-23 18:55:38 +00:00
gnu Repair this: 2005-07-09 18:30:31 +00:00
i4b Propagate rename of IFF_OACTIVE and IFF_RUNNING to IFF_DRV_OACTIVE and 2005-08-09 10:20:02 +00:00
i386 Move MINSIGSTKSZ from <machine/signal.h> to <machine/_limits.h> and rename 2005-08-20 16:44:41 +00:00
ia64 Move MINSIGSTKSZ from <machine/signal.h> to <machine/_limits.h> and rename 2005-08-20 16:44:41 +00:00
isa Add pnp and location info for the ISA bus. The pnp info is the 2005-08-01 07:03:10 +00:00
isofs/cd9660 - restore the ability to mount cd9660 filesystems as root by inverting 2005-08-14 04:19:36 +00:00
kern Track all lock relationships instead of pruning direct relationships 2005-08-25 03:47:37 +00:00
libkern - Fix checking range of strings of struct iconv_add_in in libsmb and libkiconv, 2005-08-24 12:38:26 +00:00
modules Define the target for opt_compat.h only if KERNBUILDDIR 2005-08-18 14:50:08 +00:00
net The mtu check in bridge_enqueue is bogus as the maximum Ethernet frame is 2005-08-23 19:49:00 +00:00
net80211 revert 1.64: we cannot use the channel characteristics to decide when to 2005-08-13 17:50:21 +00:00
netatalk Eliminate MAC entry point mac_create_mbuf_from_mbuf(), which is 2005-07-05 23:39:51 +00:00
netatm Propagate rename of IFF_OACTIVE and IFF_RUNNING to IFF_DRV_OACTIVE and 2005-08-09 10:20:02 +00:00
netgraph Fix multiple typos in the mutex names. This fixes false positive (and pretty 2005-08-23 00:50:59 +00:00
netinet Remove a KASSERT in the sack path that fails because of a interaction 2005-08-24 02:48:45 +00:00
netinet6 added a missing unlock (just do the same thing as in netinet/raw_ip.c) 2005-08-18 11:11:27 +00:00
netipsec Correct typo in a comment describing vshiftl(). 2005-06-02 23:56:10 +00:00
netipx Stop embedding struct ifnet at the top of driver softcs. Instead the 2005-06-10 16:49:24 +00:00
netkey SADB_UPDATE did not return an error when key length is invalid. 2005-08-22 07:05:14 +00:00
netnatm Propagate rename of IFF_OACTIVE and IFF_RUNNING to IFF_DRV_OACTIVE and 2005-08-09 10:20:02 +00:00
netncp Change API of mb_copy_t in libmchain so that netsmb can handle 2005-07-29 13:22:37 +00:00
netsmb Merge the dev_clone and dev_clone_cred event handlers into a single 2005-08-08 19:55:32 +00:00
nfs Fixes for NFS crashes on architectures that require strict alignment. 2005-07-14 20:08:27 +00:00
nfs4client - We want if (mrep != NULL) not if (m_freem != NULL). m_freem will never 2005-04-25 05:11:19 +00:00
nfsclient FIx for a bug in the change that made nfs_timer() MPSAFE. We need to 2005-07-27 15:06:26 +00:00
nfsserver NFS write gathering defers execution of NFS server write requests to wait 2005-04-17 16:25:36 +00:00
opencrypto Fix bogus check. It was possible to panic the kernel by giving 0 length. 2005-08-18 11:58:03 +00:00
pc98 MFi386: revision 1.1204. 2005-07-21 11:13:12 +00:00
pccard Change a directory layout for pc98. 2005-05-10 12:02:18 +00:00
pci Various fixups to locking: 2005-08-18 19:24:30 +00:00
posix4 Introduce MAC Framework and MAC Policy entry points to label and control 2005-05-04 10:39:15 +00:00
powerpc Move MINSIGSTKSZ from <machine/signal.h> to <machine/_limits.h> and rename 2005-08-20 16:44:41 +00:00
rpc - Don't call rpcclnt_realign() if we don't have any mbufs to realign. 2005-03-19 01:16:25 +00:00
security Insert a series of place-holder function pointers in mac_policy.h for 2005-08-08 16:09:33 +00:00
sparc64 Move MINSIGSTKSZ from <machine/signal.h> to <machine/_limits.h> and rename 2005-08-20 16:44:41 +00:00
sys End the MALLOC_DEFINE macro without the semi-colon, the caller supplies 2005-08-23 20:31:21 +00:00
tools Allow EVFILT_VNODE events to work on every filesystem type, not just 2005-06-09 20:20:31 +00:00
ufs Set the mountpoint path in the superblock (fs_fsmnt) at mount-time 2005-08-21 22:06:41 +00:00
vm Do not use vm_pager_init() to initialize vnode_pbuf_freecnt variable. 2005-08-13 20:21:33 +00:00
Makefile When building cscopnamefile, default architecture to ${MACHINE}, not i386. 2005-03-08 00:09:41 +00:00