bdrewery [Wed, 25 Nov 2015 20:38:17 +0000 (20:38 +0000)]
Replace DPSRCS that work fine in SRCS.
This is so that 'make depend' is not a required build step in these
files.
DPSRCS is overall unneeded. DPSRCS already contains SRCS, so anything
which can safely be in SRCS should be. DPSRCS is mostly just a way to
generate files that should not be linked into the final PROG/LIB. For
headers and grammars it is safe for them to be in SRCS since they will
be excluded during linking and installation.
The only remaining uses of DPSRCS are for generating .c or .o files that
must be built before 'make depend' can run 'mkdep' on the SRCS c files
list. A semi-proper example is in tests/sys/kern/acct/Makefile where a
checked-in .c file has an #include on a generated .c file. The
generated .c file should not be linked into the final PROG though since
it is #include'd. The more proper way here is just to build/link it in
though without DPSRCS. Another example is in sys/modules/linux/Makefile
where a shell script runs to parse a DPSRCS .o file that should not be
linked into the module. Beyond those, the need for DPSRCS is largely
unneeded, redundant, and forces 'make depend' to be ran. Generally,
these Makefiles should avoid the need for DPSRCS and define proper
dependencies for their files as well.
An example of an improper usage and why this matters is in usr.bin/netstat.
nl_defs.h was only in DPSRCS and so was not generated during 'make all',
but only during 'make depend'. The files including it lacked proper
depenencies on it, which forced running 'make depend' to workaround that
bug. The 'make depend' target should mostly be used for incremental build
help, not to produce a working build. This specific example was broken in
the meta build until r287905 since it does not run 'make depend'.
The gnu/lib/libreadline/readline case is fine since bsd.lib.mk has 'OBJS:
SRCS:M*.h' when there is no .depend file.
bdrewery [Wed, 25 Nov 2015 19:49:55 +0000 (19:49 +0000)]
Define a LIB<NAME>DIR for every library that LIBADD provides.
This is going to be used to allow DIRDEPS to be bootstrapped off of
LIBADD/DPADD. It currently works for internal libraries which have a
DIR defined for them but also use the .a library from a src-mapped obj
directory. It can also be useful for using -L without a --sysroot per
LIBADD to use the OBJDIR version of the libraries.
I didn't review every LIBADD, so it is possible this is missing some.
bdrewery [Wed, 25 Nov 2015 19:45:04 +0000 (19:45 +0000)]
META MODE: Avoid dirdep dependency on lib/libmd.
This avoids using the staged headers for sys/crypto/sha2/*.h, such as sha256.h,
which added an unneeded pre-build dependency on libmd to libcrypt. This
header is an INCS in lib/libmd, but found via .PATH in sys/crypto/sha2.
Since the libcrypt build was already using the in-src libmd headers
directly, just teach it how to find the sha256.h header as well.
bdrewery [Wed, 25 Nov 2015 19:45:01 +0000 (19:45 +0000)]
META MODE: Fix MACHINE=host builds.
We need to not use -nostdinc since it breaks building of clang itself. Use
-isystem rather than -I/usr/include and -nostdinc which gets us using
the stage include directory before searching the real host headers.
This allows removing more of the -I hacks to get host headers since the
headers are no longer excluded. The -B seemed unneeded.
This fixes building of secure/lib/libcrypto which was looking at the
/usr/include/openssl/asn1.h header rather than the staged one.
This fixes building of clang which wants to find its own internal
headers in the STAGEDIR/usr/lib/clang/* path.
bdrewery [Wed, 25 Nov 2015 19:44:51 +0000 (19:44 +0000)]
META MODE: Fix 'make bootstrap-tools'.
The main problem was bitrot after elftoolchain being swapped in for the
GNU toolchain.
This also reworks how the list of 'host allowed' libraries is determined
to only allow INTERNALLIBs, which is needed for libelftc to come in.
For usr.bin/readelf use the same hack, as libelf and libdward, to bring in
the needed sys/ headers for host builds. This has not yet been a problem due
to readelf not being built as a host tool in buildworld. This is possible
in the meta build though when building the toolchain.
bdrewery [Wed, 25 Nov 2015 19:44:43 +0000 (19:44 +0000)]
META MODE: Don't create .meta files when symlinking sources into the obj directory.
Tracking these leads to situations where meta mode will consider the
file to be out of date if /bin/sh or /bin/ln are newer than the source
file. There's no reason for meta mode to do this as make is already
handling the rebuild dependency fine.
bdrewery [Wed, 25 Nov 2015 19:44:28 +0000 (19:44 +0000)]
META MODE: Need to include the LEGACY_TOOLS directories into PATH.
This is just as Makefile.inc1 does it for these phases. Otherwise some
of the build tools are not found and used properly, such as 'make-roken'
in the kerberos5 build on older releases.
bdrewery [Wed, 25 Nov 2015 19:13:45 +0000 (19:13 +0000)]
META MODE: Don't add staged DPADDs to DIRDEPS when bootstrapping gendirdeps.
This was finding libraries that were installed into DESTDIR/usr/lib,
where DESTDIR is the stage directory, and then adding in usr/lib to
DIRDEPS. Just exclude the STAGE_ROOT if defined.
bdrewery [Wed, 25 Nov 2015 19:13:35 +0000 (19:13 +0000)]
META MODE: Rework circular dependency guard for librtld_db/libproc.
librtld_db only needs libutil.h to build, not the libproc library. So
it can safely use its header and allow libproc to depend on librtld_rb
to be built first to link. This is required after fixing ld --sysroot
in r291226.
bdrewery [Wed, 25 Nov 2015 19:10:59 +0000 (19:10 +0000)]
Stop building vers.c in include/ and only build the needed osreldate.h.
Because of how osreldate.h was being built with newvers.sh, which always
spat out a vers.c dependent on SVN or git, the meta mode build was
considering osreldate.h to depend on the current git or SVN index. This
would lead to entire tree rebuilds when modifying git's index. There's
no reason to be generating vers.c here so just skip it.
While here, in mk-osreldate.sh rename PARAM_H to proper PARAMFILE (which
newvers.sh already has a default for) and remove unneeded export.
bdrewery [Wed, 25 Nov 2015 19:10:53 +0000 (19:10 +0000)]
META MODE: Don't override DESTDIR to the default when building the toolchain.
For this case, the normal META MODE staging logic should be used. The
BSARGS having DESTDIR= is due to Makefile.inc1 overriding DESTDIR to
something when appropriate. For the toolchain stage META MODE is in charge of
it, not Makefile.inc1.
At least include/, if staging it to the host stagedir, was impacted from
this. Staging of include.host is not yet done.
adrian [Wed, 25 Nov 2015 18:24:49 +0000 (18:24 +0000)]
[ath] listen to all beacons in IBSS and software beacon miss.
I added MYBEACON support a while ago to listen to beacons that are only
for your configured BSSID. For AR9380 and later NICs this results in
a lot less chip wakeups in station mode as it then only shows you beacons
that are destined to you.
However in IBSS mode you really do want to hear all beacons so you can do
IBSS merges. Oops.
So only use MYBEACON for STA + not-scanning, and just use BEACON for
the other modes it used to use BEACON for.
This doesn't completely fix IBSS merges though - there are still some
conditions to chase down and fix.
adrian [Wed, 25 Nov 2015 18:16:42 +0000 (18:16 +0000)]
[net80211] log the A-MPDU setup attempt count as part of debugging.
I've seen some cases where we get stuck in a loop constantly trying to
negotiate A-MPDU TX which is definitely not supposed to happen.
This will let me see if it's something funky with the retry count or
not.
fabient [Wed, 25 Nov 2015 14:45:43 +0000 (14:45 +0000)]
The r241129 description was wrong that the scenario is possible
only for read locks on pcbs. The same race can happen with write
lock semantics as well.
The race scenario:
- Two threads (1 and 2) locate pcb with writer semantics (INPLOOKUP_WLOCKPCB)
and do in_pcbref() on it.
- 1 and 2 both drop the inp hash lock.
- Another thread (3) grabs the inp hash lock. Then it runs in_pcbfree(),
which wlocks the pcb. They must happen faster than 1 or 2 come INP_WLOCK()!
- 1 and 2 congest in INP_WLOCK().
- 3 does in_pcbremlists(), drops hash lock, and runs in_pcbrele_wlocked(),
which doesn't free the pcb due to two references on it.
Then it unlocks the pcb.
- 1 (or 2) gets wlock on the pcb, runs in_pcbrele_wlocked(), which doesn't
report inp as freed, due to 2 (or 1) still helding extra reference on it.
The thread tries to do smth with a disconnected pcb and crashes.
hselasky [Wed, 25 Nov 2015 13:26:42 +0000 (13:26 +0000)]
Add simple indent wrapper tool for style(9) checking GIT/SVN patches.
The indent_wrapper tool only accepts full context diffs and works by
identifying the surrounding C-block touched by a diff and passing only
that to indent for styling. In the end a diff is produced or an
external tool like meld can be invoked, to show the styling
differences.
ae [Wed, 25 Nov 2015 07:31:59 +0000 (07:31 +0000)]
Overhaul if_enc(4) and make it loadable in run-time.
Use hhook(9) framework to achieve ability of loading and unloading
if_enc(4) kernel module. INET and INET6 code on initialization registers
two helper hooks points in the kernel. if_enc(4) module uses these helper
hook points and registers its hooks. IPSEC code uses these hhook points
to call helper hooks implemented in if_enc(4).
avos [Tue, 24 Nov 2015 19:20:45 +0000 (19:20 +0000)]
urtwn(4): rework ROM reading.
- Add error handling for urtwn_(r88e_)read_rom() and
urtwn_efuse_*() functions.
- Remove code duplication between urtwn_efuse_read() and
urtwn_r88e_read_rom().
- Merge r88e_rom and (r92c_)rom structures
(only one of them can be used at the same time).
- Other minor fixes / improvements.
Tested with RTL8188EU, STA mode
(URTWN_DEBUG + USB_DEBUG, hw.usb.urtwn.debug=3, no visual differences).
Reviewed by: kevlo
Approved by: adrian (mentor)
Differential Revision: https://reviews.freebsd.org/D4253
cem [Tue, 24 Nov 2015 18:51:17 +0000 (18:51 +0000)]
ntb: Add MW tunable for MMR Xeon errata workaround
Adds a new tunable, ntb.hw.b2b_mw_idx, which specifies the offset (from the
total number of memory windows) to use for register access on hardware with
the SDOORBELL_LOCKUP errata. The default is -1, i.e., the last memory
window.
We map BARs before the b2b_mw_idx is selected, so map them all as memory
windows initially. The register memory window should not be write-combined,
so we explicitly disable WC on the selected MW later.
This introduces a layer of abstraction between consumer memory window
indices, which exclude any exclusive errata-workaround BARs, and internal
memory window indices, which include such BARs. An internal routine,
ntb_user_mw_to_idx(), converts the former to the latter. Public APIs have
been updated to use this instead of assuming the exclusive workaround BAR is
the last available MW.
nwhitehorn [Tue, 24 Nov 2015 16:10:21 +0000 (16:10 +0000)]
Use what we really mean (powerpc_lwsync()) rather than the Linux-compat
mb() here and provide some more documentation on what, exactly, makes this
code safe.
skra [Tue, 24 Nov 2015 13:57:41 +0000 (13:57 +0000)]
Flush all kernel mappings from TLB(s) in time when they are cleared.
Replace tlb_flush_local() by tlb_flush() as even not global mappings
could be fetched to TLB(s) on other cores by speculative table walk.
From OS point of view, it was not a problem as either such mappings
were not used anymore or they were flushed from TLB(s) when reused.
However, from hardware point of view, it was a problem. Not flushed
mappings could be a target for speculative reads or prefetches (which
might be quite aggresive on ARM cores). As speculative read can fill
cacheline, it can cause a real problem, when physical page is reused,
but mapped with different memory attributes.
Anyhow, it's good to have only valid mappings in TLB(s).
andrew [Tue, 24 Nov 2015 11:01:43 +0000 (11:01 +0000)]
Add support for moving the DMAP range. This is needed as some AMD SoCs
place physical memory at an address outside the old DMAP range. This is an
issue as we rely on being able to move from PA -> VA using this range.
Obtained from: Patrick Wildt <patrick@bitrig.org> (earlier version)
Sponsored by: ABT Systems Ltd
Differential Revision: https://reviews.freebsd.org/D3885
kib [Tue, 24 Nov 2015 09:45:36 +0000 (09:45 +0000)]
Rework the vnode cache recycling to meet free and unused vnodes
targets. See the comment above wantfreevnodes variable for the
description of the algorithm.
The vfs.vlru_alloc_cache_src sysctl is removed. New code frees
namecache sources as the last chance to satisfy the highest watermark,
instead of selecting the source vnodes randomly. This provides good
enough behaviour to keep vn_fullpath() working in most situations.
The filesystem layout with deep trees, where the removed knob was
required, is thus handled automatically.
kib [Tue, 24 Nov 2015 09:13:21 +0000 (09:13 +0000)]
On PowerPC 64bit, the linux-compat mb() definition is implemented with
lwsync instruction, which does not provide Store/Load barrier. Fix
this by using "full" sync barrier for mb().
atomic_store_rel() does not need full barrier, change mb() call there
to the lwsync instruction if not hitting the known CPU erratas
(i.e. on 32bit). Provide powerpc_lwsync() helper to isolate the
lwsync/sync compile time selection, and use it in atomic_store_rel()
and several other places which duplicate the code.
Noted by: alc
Reviewed and tested by: nwhitehorn
Sponsored by: The FreeBSD Foundation
ngie [Tue, 24 Nov 2015 07:55:55 +0000 (07:55 +0000)]
- Account for stripesize/stripeoffset in diskinfo output
- Remove c partitions from output (/dev/md32c was an alias for
/dev/md32 that was deprecated in 8.x)
bdrewery [Tue, 24 Nov 2015 00:49:29 +0000 (00:49 +0000)]
Fix ld not respecting --sysroot.
ld(1) uses the /usr/libdata/ldscripts when linking. These scripts add in the
default search paths of /lib and /usr/lib via 'SEARCH_DIR("DIR")'. These
need to be prefixed by '=' so that the --sysroot flag is respected. This
is not a problem with buildworld since the TOOLS_PREFIX is baked into the
cross-ld. However it is a problem when trying to use ld(1) with --sysroot
anywhere else as it ends up still reading /lib and /usr/lib despite --sysroot.
The default --sysroot (TARGET_SYSTEM_ROOT) is '/' for /usr/bin/ld.
I found this while building with META MODE with uses only --sysroot with
/usr/bin/ld, and found that libraries that I had not built in its sysroot
directory were leaking in. This didn't happen with ports binutils either. This
would also impact external compiler support.
jhb [Mon, 23 Nov 2015 23:48:07 +0000 (23:48 +0000)]
Add a new -B flag for use with list mode (-l) that lists details about
bridges. Currently this includes information about what resources a
bridge decodes on the upstream side for use by downstream devices including
bus numbers, I/O port resources, and memory resources. Windows and bus
ranges are enumerated for both PCI-PCI bridges and PCI-CardBus bridges.
To simplify the implementation, all enumeration is done by reading the
appropriate config space registers directly rather than querying the
bridge driver in the kernel via new ioctls. This does result in a few
limitations.
First, an unimplemented window in a PCI-PCI bridge cannot be accurately
detected as accurate detection requires writing to the window base
register. That is not safe for pciconf(8). Instead, this assumes that
any window where both the base and limit read as all zeroes is
unimplemented.
Second, the PCI-PCI bridge driver in a tree has a few quirks for
PCI-PCI bridges that use subtractive decoding but do not indicate that
via the progif config register. The list of quirks is duplicated in
pciconf's source.