Dimitry Andric [Mon, 24 Nov 2014 20:07:09 +0000 (20:07 +0000)]
For now, disable using -fsanitize=bounds for the libc ssp tests, when
using clang 3.5.0, until the runtime support (via compiler-rt) is added.
Otherwise, this would lead to link errors about missing support
libraries.
John Baldwin [Mon, 24 Nov 2014 19:55:45 +0000 (19:55 +0000)]
Add a bus_get_domain() wrapper around BUS_GET_DOMAIN(). Use this to add
a new per-device '%domain' sysctl node that returns the NUMA domain a
device is associated with if it is associated with one.
Note that this API is still a WIP and might change before 11.0 actually
ships.
Differential Revision: https://reviews.freebsd.org/D930
Reviewed by: kib, adrian
Ian Lepore [Mon, 24 Nov 2014 16:12:11 +0000 (16:12 +0000)]
Add busdma sync ops before reading and after modifying the descriptor rings.
This was previously working by accident because BUSDMA_COHERENT_MEMORY has
always been set to strongly-ordered on arm. Now we're moving towards
normal-uncacheable (what might be called write-combining on other platforms)
and using the proper sync ops will be more important. Of course, that
opens the question of just what is the "proper" sync op for shared
concurrent dma access as opposed to accesses where the handoff of control
of the memory has well-defined sequence points that match the available
busdma sync operations.
Philip Paeps [Mon, 24 Nov 2014 14:00:27 +0000 (14:00 +0000)]
Add a sysctl `net.link.tap.deladdrs_on_close' to configure whether tap
should delete configured addresses and routes when the interface is
closed. Default is enabled (preserve current behaviour).
Alexander Motin [Mon, 24 Nov 2014 11:37:27 +0000 (11:37 +0000)]
Replace home-grown CTL IO allocator with UMA.
Old allocator created significant lock congestion protecting its lists
of preallocated I/Os, while UMA provides much better SMP scalability.
The downside of UMA is lack of reliable preallocation, that could guarantee
successful allocation in non-sleepable environments. But careful code
review shown, that only CAM target frontend really has that requirement.
Fix that making that frontend preallocate and statically bind CTL I/O for
every ATIO/INOT it preallocates any way. That allows to avoid allocations
in hot I/O path. Other frontends either may sleep in allocation context
or can properly handle allocation errors.
On 40-core server with 6 ZVOL-backed LUNs and 7 iSCSI client connections
this change increases peak performance from ~700K to >1M IOPS! Yay! :)
Ian Lepore [Mon, 24 Nov 2014 01:13:58 +0000 (01:13 +0000)]
The arm PJ4B cpu is armv7 architecture, not v6.
If this feels like deja vu... the last time this was fixed in this file
only ARM_MMU_V6 was fixed, this time it's ARM_ARCH_V6 (and this time I
searched for other occurrances of pj4b in here).
Ian Lepore [Mon, 24 Nov 2014 00:02:15 +0000 (00:02 +0000)]
Add ARMV6 as an arm option. This will cause obscure magic in config(8)
to automatically set the armv6 option when MACHINE_ARCH is armv6. That
allows replacing ever-growing lists of cpu names as options to compile
a given file with the using either "optional armv6" or "optional !armv6".
Ian Lepore [Sun, 23 Nov 2014 23:58:47 +0000 (23:58 +0000)]
Fix the negation (!) operator so that it binds only to the word that
immediately follows it, which means 'not' has to be reset every time an
option word or device name is processed.
Peter Grehan [Sun, 23 Nov 2014 23:07:21 +0000 (23:07 +0000)]
Change the lower bound for guest vmspace allocation to 0 instead of
using the VM_MIN_ADDRESS constant.
HardenedBSD redefines VM_MIN_ADDRESS to be 64K, which results in
bhyve VM startup failing. Guest memory is always assumed to start
at 0 so use the absolute value instead.
Reported by: Shawn Webb, lattera at gmail com
Reviewed by: neel, grehan
Obtained from: Oliver Pinter via HardenedBSD
https://github.com/HardenedBSD/hardenedBSD/commit/23bd719ce1e3a8cc42fc8317b1c7c6d9e74dcba0
MFC after: 1 week
Ian Lepore [Sun, 23 Nov 2014 19:13:17 +0000 (19:13 +0000)]
Consider the negation operator (!) to be a word even if it is not followed
by whitespace. This allows "optional !foo" which is what most programmers
are naturally going to tend to do as opposed to "optional ! foo".
Dimitry Andric [Sun, 23 Nov 2014 18:31:55 +0000 (18:31 +0000)]
Fix the following -Werror warning from clang 3.5.0, while building the
ath kernel module:
sys/dev/ath/ath_hal/ar5212/ar5212_reset.c:2642:7: error: taking the absolute value of unsigned type 'unsigned int' has no effect [-Werror,-Wabsolute-value]
if (abs(lp[0] * EEP_SCALE - target) < EEP_DELTA) {
^
sys/dev/ath/ah_osdep.h:74:18: note: expanded from macro 'abs'
#define abs(_a) __builtin_abs(_a)
^
sys/dev/ath/ath_hal/ar5212/ar5212_reset.c:2642:7: note: remove the call to '__builtin_abs' since unsigned values cannot be negative
sys/dev/ath/ah_osdep.h:74:18: note: expanded from macro 'abs'
#define abs(_a) __builtin_abs(_a)
^
1 error generated.
This warning occurs because both lp[0] and target are unsigned, so the
subtraction expression is also unsigned, and calling abs() is a no-op.
However, the intention was to look at the absolute difference between
the two unsigned quantities. Introduce a small static function to
clarify what we're doing, and call that instead.
Reviewed by: adrian
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D1212
Don't use the synchronization endpoint unless referenced by the
isochronous endpoint descriptor used for the data transfers, hence the
synchronization feature might not be supposed to be supported [yet].
This makes seamless playback synced with the USB HOST clock work with
the DN32-USB module for Midas audio systems and possibly other similar
products from Klark Teknik.
Gleb Smirnoff [Sun, 23 Nov 2014 12:01:52 +0000 (12:01 +0000)]
Merge from projects/sendfile:
o Provide a new VOP_GETPAGES_ASYNC(), which works like VOP_GETPAGES(), but
doesn't sleep. It returns immediately, and will execute the I/O done handler
function that must be supplied as argument.
o Provide VOP_GETPAGES_ASYNC() for the FFS, which uses vnode_pager.
o Extend pagertab to support pgo_getpages_async method, and implement this
method for vnode_pager.
man(1) now first test the manpage to run with mandoc to make sure it can be
rendered.
In case groff cannot be found (because base has been built WITHOUT_GROFF) it
recommands to install groff from the packages
Dimitry Andric [Sat, 22 Nov 2014 23:50:18 +0000 (23:50 +0000)]
Fix the following -Werror warnings from clang 3.5.0, while building
bsnmpd's snmp_hostres module:
usr.sbin/bsnmpd/modules/snmp_hostres/hostres_snmp.c:204:20: error: absolute value function 'abs' given an argument of type 'const long' but has parameter of type 'int' which may cause truncation of value [-Werror,-Wabsolute-value]
str[9] = (u_char)(abs(tm->tm_gmtoff) / 3600);
^
usr.sbin/bsnmpd/modules/snmp_hostres/hostres_snmp.c:204:20: note: use function 'labs' instead
str[9] = (u_char)(abs(tm->tm_gmtoff) / 3600);
^~~
labs
usr.sbin/bsnmpd/modules/snmp_hostres/hostres_snmp.c:205:22: error: absolute value function 'abs' given an argument of type 'const long' but has parameter of type 'int' which may cause truncation of value [-Werror,-Wabsolute-value]
str[10] = (u_char)((abs(tm->tm_gmtoff) % 3600) / 60);
^
usr.sbin/bsnmpd/modules/snmp_hostres/hostres_snmp.c:205:22: note: use function 'labs' instead
str[10] = (u_char)((abs(tm->tm_gmtoff) % 3600) / 60);
^~~
labs
Since tm::tm_gmtoff is a long, use labs(3) instead.
Dimitry Andric [Sat, 22 Nov 2014 23:04:33 +0000 (23:04 +0000)]
Fix the following -Werror warnings from clang 3.5.0, while building
usr.sbin/rtadvd:
usr.sbin/rtadvd/rtadvd.c:1291:7: error: taking the absolute value of unsigned type 'unsigned int' has no effect [-Werror,-Wabsolute-value]
abs(preferred_time - pfx->pfx_pltimeexpire) > rai->rai_clockskew) {
^
usr.sbin/rtadvd/rtadvd.c:1291:7: note: remove the call to 'abs' since unsigned values cannot be negative
abs(preferred_time - pfx->pfx_pltimeexpire) > rai->rai_clockskew) {
^~~
usr.sbin/rtadvd/rtadvd.c:1324:7: error: taking the absolute value of unsigned type 'unsigned int' has no effect [-Werror,-Wabsolute-value]
abs(valid_time - pfx->pfx_vltimeexpire) > rai->rai_clockskew) {
^
usr.sbin/rtadvd/rtadvd.c:1324:7: note: remove the call to 'abs' since unsigned values cannot be negative
abs(valid_time - pfx->pfx_vltimeexpire) > rai->rai_clockskew) {
^~~
2 errors generated.
These warnings occur because both preferred_time and pfx_pltimeexpire
are uint32_t's, so the subtraction expression is also unsigned, and
calling abs() is a no-op.
However, the intention was to look at the absolute difference between
the two unsigned quantities. Introduce a small static function to
clarify what we're doing, and call that instead.
Reviewed by: hrs
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D1197
Fix the host mode ISOCHRONOUS transfer interval programming in the
SAF1761 OTG driver. Currently the driver logic is very simple and
double buffering the USB transactions is not done. Also you need to
use an external USB high speed USB HUB for reliable FULL speed
outgoing ISOCHRONOUS traffic, because the internal one chokes on
so-called split transfers above 188 bytes.
Dimitry Andric [Sat, 22 Nov 2014 16:30:31 +0000 (16:30 +0000)]
Avoid undefined behaviour in gas's rotate_left() macro for n == 0.
Otherwise, clang can effectively remove the first iteration of the for
loops where this macro is invoked, and as a result, "cmp r0, #99" fails
to assemble.
Alexander Motin [Sat, 22 Nov 2014 15:09:18 +0000 (15:09 +0000)]
For both iSCSI initiator and target increase socket buffer sizes before
establishing connection.
This is a workaround for Chelsio TOE driver, that does not update socket
buffer size in hardware after connection established, and unless that is
done beforehand, kernel code will stuck, attempting to send/receive full
PDU at once.
Dimitry Andric [Sat, 22 Nov 2014 12:13:05 +0000 (12:13 +0000)]
Fix the following -Werror warnings from clang 3.5.0, while building
usr.bin/locate:
usr.bin/locate/locate/util.c:249:29: error: taking the absolute value of unsigned type 'unsigned int' has no effect [-Werror,-Wabsolute-value]
MAXPATHLEN, abs(i) < abs(htonl(i)) ? i : htonl(i));
^
usr.bin/locate/locate/util.c:249:29: note: remove the call to 'abs' since unsigned values cannot be negative
MAXPATHLEN, abs(i) < abs(htonl(i)) ? i : htonl(i));
^~~
usr.bin/locate/locate/util.c:274:32: error: taking the absolute value of unsigned type 'unsigned int' has no effect [-Werror,-Wabsolute-value]
MAXPATHLEN, abs(word) < abs(htonl(word)) ? word :
^
usr.bin/locate/locate/util.c:274:32: note: remove the call to 'abs' since unsigned values cannot be negative
MAXPATHLEN, abs(word) < abs(htonl(word)) ? word :
^~~
The problem is that ntohl() always returns an unsigned quantity. In
this case, it's expected to be cast back to a signed integer, but to
stop complaints about abs() we just store it into an integer, and don't
call ntohl() again.
Reviewed by: ngie
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D1196
Dimitry Andric [Sat, 22 Nov 2014 12:10:09 +0000 (12:10 +0000)]
Fix the following -Werror warning from clang 3.5.0, while building
usr.bin/cpio on amd64 (or any arch with 64-bit time_t):
contrib/libarchive/cpio/cpio.c:1143:6: error: absolute value function 'abs' given an argument of type 'long' but has parameter of type 'int' which may cause truncation of value [-Werror,-Wabsolute-value]
if (abs(mtime - now) > (365/2)*86400)
^
contrib/libarchive/cpio/cpio.c:1143:6: note: use function 'labs' instead
if (abs(mtime - now) > (365/2)*86400)
^~~
labs
1 error generated.
This is because time_t is a long on amd64. To avoid the warning, just
copy the equivalent test from a few lines before, which is used in the
Windows case, and which is type safe.
Reviewed by: emaste
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D1198