ngie [Sun, 20 Dec 2015 04:52:53 +0000 (04:52 +0000)]
Skip the testcases on i386 (all the assertions fail) [*]
Also, don't compile the ldexpl(3) testcases on platforms that don't support
the libcall (technically only x86 right now). This makes this test buildable on
arm*/mips*/powerpc*
PR: 205449 [*]
MFC after: 1 week
Tested on: stable/10 (amd64/i386), head (amd64/i386)
Sponsored by: EMC / Isilon Storage Division
ngie [Sun, 20 Dec 2015 04:28:37 +0000 (04:28 +0000)]
- Use nitems instead of handrolling the macro
- Use a separate variable for tracking the testcase count instead
of hardcoding the offset for the testcases
ngie [Sun, 20 Dec 2015 04:17:54 +0000 (04:17 +0000)]
Disable test-ctrig.t testcases which fail assertions on i386 [*]
Also, don't compile the exp2l(3) testcases on platforms that don't support the
libcall (technically only x86 right now). This makes this test buildable on
arm*/mips*/powerpc*
Tested on: stable/10 (amd64/i386), head (amd64/i386)
PR: 205446 [*]
MFC after: 1 week
X-MFC to: stable/10
Sponsored by: EMC / Isilon Storage Division
jtl [Sun, 20 Dec 2015 02:05:33 +0000 (02:05 +0000)]
Add a safety net to reclaim mbufs when one of the mbuf zones become
exhausted.
It is possible for a bug in the code (or, theoretically, even unusual
network conditions) to exhaust all possible mbufs or mbuf clusters.
When this occurs, things can grind to a halt fairly quickly. However,
we currently do not call mb_reclaim() unless the entire system is
experiencing a low-memory condition.
While it is best to try to prevent exhaustion of one of the mbuf zones,
it would also be useful to have a mechanism to attempt to recover from
these situations by freeing "expendable" mbufs.
This patch makes two changes:
a) The patch adds a generic API to the UMA zone allocator to set a
function that should be called when an allocation fails because the
zone limit has been reached. Because of the way this function can be
called, it really should do minimal work.
b) The patch uses this API to try to free mbufs when an allocation
fails from one of the mbuf zones because the zone limit has been
reached. The function schedules a callout to run mb_reclaim().
gonzo [Sun, 20 Dec 2015 00:58:22 +0000 (00:58 +0000)]
Add dev.fb.X.resync sysctl to resync ARM framebuffer with VideoCore
Some applications (e.g. Kodi) use tvservice APIs to manage HDMI
modes, power state, EDID etc. directly through VideoCore. After
these manipulations VideoCore may loose its state and needs to be
resynced with ARM. Under Linux this problem is worked around using
fbset utility that recreates framebuffer. Since there is no fbset
utility in FreeBSD we provide sysctl for userland apps to get system
back into normal mode.
imp [Sat, 19 Dec 2015 19:13:38 +0000 (19:13 +0000)]
Create libstand version of uuid_from_string and uuid_to_string. The
normal libc versions of these functions use asprintf and sscanf, both
of which aren't available in the libstand world. It's easier to
rewrite these than to try to claw those functions into libstand.
Also include uuid_create_nil, since it's safe to include. These were
written from scratch, except for bits of comments that I got from the
libc version, which are acknowledged in the source.
imp [Sat, 19 Dec 2015 19:01:42 +0000 (19:01 +0000)]
Pass the UEFI system table into the kernel from the boot loader via
the FW_HANDLE metadata item. The kernel can get the rest of what it
needs from this.
alc [Sat, 19 Dec 2015 18:42:50 +0000 (18:42 +0000)]
Introduce a new mechanism for relocating virtual pages to a new physical
address and use this mechanism when:
1. kmem_alloc_{attr,contig}() can't find suitable free pages in the physical
memory allocator's free page lists. This replaces the long-standing
approach of scanning the inactive and inactive queues, converting clean
pages into PG_CACHED pages and laundering dirty pages. In contrast, the
new mechanism does not use PG_CACHED pages nor does it trigger a large
number of I/O operations.
2. on 32-bit MIPS processors, uma_small_alloc() and the pmap can't find
free pages in the physical memory allocator's free page lists that are
covered by the direct map. Tested by: adrian
3. ttm_bo_global_init() and ttm_vm_page_alloc_dma32() can't find suitable
free pages in the physical memory allocator's free page lists.
In the coming months, I expect that this new mechanism will be applied in
other places. For example, balloon drivers should use relocation to
minimize fragmentation of the guest physical address space.
Make vm_phys_alloc_contig() a little smarter (and more efficient in some
cases). Specifically, use vm_phys_segs[] earlier to avoid scanning free
page lists that can't possibly contain suitable pages.
nwhitehorn [Sat, 19 Dec 2015 02:16:38 +0000 (02:16 +0000)]
Provide link state reporting so that ifconfig_llan0="DHCP" works. The
reported link state is fictional (always up) since the hypervisor does
not provide this information.
emaste [Fri, 18 Dec 2015 17:39:54 +0000 (17:39 +0000)]
loader.efi: show EFI error number, not full status value
EFI return values set the high bit to indicate an error. The log
messages changed here are printed only in the case of an error,
so including the error bit is redundant. Also switch to decimal to
match the error definitions (in sys/boot/efi/include/efierr.h).
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
ume [Fri, 18 Dec 2015 17:30:22 +0000 (17:30 +0000)]
Generate ipnodes.by{addr,name} from /etc/hosts for compatibility with
FreeBSD local name resolution.
If /var/yp/ipnodes exists, we generate them from it for backward
compatibility.
mjg [Fri, 18 Dec 2015 16:33:15 +0000 (16:33 +0000)]
proc: fix a race which could result in dereference of bad p_pgrp pointer on fork
During fork p_starcopy - p_endcopy area of a process is populated with bcopy
with only proc lock held. Another forking thread can find such a process and
proceed to access p_pgrp included in said area.
Fix the problem by moving the field outside. It is being properly assigned
later.
nwhitehorn [Fri, 18 Dec 2015 14:35:27 +0000 (14:35 +0000)]
Enable PRINTF_BUFR_SIZE on powerpc64, following r194204 on x86. The kernel
message garbling was becoming very noticeable on the 64-CPU systems we now
support and run on.
imp [Fri, 18 Dec 2015 06:13:18 +0000 (06:13 +0000)]
Add a generic firmware dependent handle to pass from the loader to the
kernel. This will be used for passing in things like the system table
from EFI or other similar metadata that can be used by the kernel to
communicate with the firmware.
adrian [Fri, 18 Dec 2015 05:43:59 +0000 (05:43 +0000)]
[intrng] Migrate the intrng code from sys/arm/arm to sys/kern/subr_intr.c.
The ci20 port (by kan@) is going to reuse almost all of the intrng code
since the SoC in question looks suspiciously like someone took an ARM
SoC design and replaced the ARM core with a MIPS core.
* migrate out the code;
* rename ARM_ -> INTR_;
* rename arm_ -> intr_;
* move the interrupt flush routine from intr.c / intrng.c into
arm/machdep_intr.c - removing the code duplication and removing
the ARM specific bits from here.
Thanks to the Star Wars: The Force Awakens premiere line for allowing
me a couple hours of quiet time to finish the universe builds.
Tested:
* make universe
TODO:
* The structure definitions in subr_intr.c still includes machine/intr.h
which requires one duplicates all of the intrng definitions in
the platform code (which kan has done, and I think we don't have to.)
Instead I should break out the generic things (function declarations,
common intr structures, etc) into a separate header.
* Kan has requested I make the PIC based IPI stuff optional.
ian [Fri, 18 Dec 2015 01:25:30 +0000 (01:25 +0000)]
Fix the clock divisor calc for imx6 sdcard bus speed.
I don't know what alternate universe I was inhabiting when I wrote it
originally, but apparently the basic workings of mathematics were different
than in this universe. I also can't explain how it ever worked, except "by
accident", because completely bogus values were being written into the
divisor register.
jhb [Thu, 17 Dec 2015 20:33:20 +0000 (20:33 +0000)]
t seems certain Intel GPUs use GPIO bitbanging over a child device
instead of GMBUS access for I2C transfers. The GMBUS driver falls back
to this mode when a transfer times out. However, the first transfer to
timeout was sending the request back to itself resulting in an panic due
to recursing on a lock. Fix it to forward the request on to the proper
device. This appears to have been accidentally changed in r277487.
cem [Thu, 17 Dec 2015 17:48:57 +0000 (17:48 +0000)]
vm_page_replace: add wrapper to KASSERT about old page
It turns out the callers of vm_page_replace know exactly which page they are
replacing and would like to assert about it. Change those from hard panics to
KASSERTs, and provide them with a wrapper so they don't have to deal with
warnings from an INVARIANTS-dependent dead store of the return value of
vm_page_replace.
andrew [Thu, 17 Dec 2015 17:00:04 +0000 (17:00 +0000)]
Support the variant of the interrupt-map property where the parent bus has
the #address-cells property set. For this we need to read more data before
the parent interrupt description.
this is only enabled on arm64 for now as it's not quite compliant with the
ePAPR spec. We should use a default of 2 where the #address-cells property
is missing, however this will need further testing across architectures.
gnn [Thu, 17 Dec 2015 02:02:09 +0000 (02:02 +0000)]
Switch the IPsec related statistics to using the built in sysctl
variable set rather than reading from kernel memory.
This also makes the -z (zero) flag work correctly
markj [Thu, 17 Dec 2015 00:00:27 +0000 (00:00 +0000)]
Support an arbitrary number of arguments to DTrace syscall probes.
Rather than pushing all eight possible arguments into dtrace_probe()'s
stack frame, make the syscall_args struct for the current syscall available
via the current thread. Using a custom getargval method for the systrace
provider, this allows any syscall argument to be fetched, even in kernels
that have modified the maximum number of system call arguments.
markj [Wed, 16 Dec 2015 23:39:27 +0000 (23:39 +0000)]
Fix style issues around existing SDT probes.
- Use SDT_PROBE<N>() instead of SDT_PROBE(). This has no functional effect
at the moment, but will be needed for some future changes.
- Don't hardcode the module component of the probe identifier. This is
set automatically by the SDT framework.
smh [Wed, 16 Dec 2015 22:26:28 +0000 (22:26 +0000)]
Fix issues introduced by r292275
* Fix panic for etherswitches which don't have a LLADDR.
* Disabled DELAY in unsolicited NDA, which needs further work.
* Fixed missing DELAY in carp_send_na.
* style(9) fix.
glebius [Wed, 16 Dec 2015 21:30:45 +0000 (21:30 +0000)]
A change to KPI of vm_pager_get_pages() and underlying VOP_GETPAGES().
o With new KPI consumers can request contiguous ranges of pages, and
unlike before, all pages will be kept busied on return, like it was
done before with the 'reqpage' only. Now the reqpage goes away. With
new interface it is easier to implement code protected from race
conditions.
Such arrayed requests for now should be preceeded by a call to
vm_pager_haspage() to make sure that request is possible. This
could be improved later, making vm_pager_haspage() obsolete.
Strenghtening the promises on the business of the array of pages
allows us to remove such hacks as swp_pager_free_nrpage() and
vm_pager_free_nonreq().
o New KPI accepts two integer pointers that may optionally point at
values for read ahead and read behind, that a pager may do, if it
can. These pages are completely owned by pager, and not controlled
by the caller.
This shifts the UFS-specific readahead logic from vm_fault.c, which
should be file system agnostic, into vnode_pager.c. It also removes
one VOP_BMAP() request per hard fault.
emaste [Wed, 16 Dec 2015 19:23:10 +0000 (19:23 +0000)]
Enable LLDB by default on amd64 and arm64
LLDB is usable for userland core file and live debugging on amd64, and
for userland core file debugging on arm64. In general it works at least
as well on FreeBSD as our in-tree gdb version, so enable it by default
to allow for broader use and testing.
An LLDB tutorial is available at http://lldb.llvm.org/tutorial.html, and
a table mapping GDB commands to LLDB commands can be found at
http://lldb.llvm.org/lldb-gdb.html .
LLDB also has some level of support for FreeBSD on arm, mips, i386,
and powerpc, but is not yet ready to have them enabled by default.
bapt [Wed, 16 Dec 2015 17:13:09 +0000 (17:13 +0000)]
pxeboot: make the tftp loader use the option root-path directive
pxeboot in tftp loader mode (when built with LOADER_TFTP_SUPPORT) now
prefix all the path to open with the path obtained via the option 'root-path'
directive.
This allows to be able to use the traditional content /boot out of box. Meaning
it now works pretty much like all other loaders. It simplifies hosting hosting
multiple version of FreeBSD on a tftp server.
As a consequence, pxeboot does not look anymore for a pxeboot.4th (which was
never provided)
Note: that pxeboot in tftp loader mode is not built by default.
emaste [Wed, 16 Dec 2015 16:19:18 +0000 (16:19 +0000)]
UEFI: combine GetMemoryMap and ExitBootServices and retry on error
The EFI memory map may change before or during the first
ExitBootServices call. In that case ExitBootServices returns an error,
and GetMemoryMap and ExitBootServices must be retried.
Glue together calls to GetMemoryMap(), ExitBootServices() and storage of
(now up-to-date) MODINFOMD_EFI_MAP metadata within a single function.
That new function - bi_add_efi_data_and_exit() - uses space previously
allocated in bi_load_efi_data() to store the memory map (it will fail if
that space is too short). It handles re-calling GetMemoryMap() once to
update the map key if necessary. Finally, if ExitBootServices() is
successful, it stores the memory map and its header as MODINFOMD_EFI_MAP
metadata.
ExitBootServices() calls are now done earlier, from within arch-
independent bi_load() code.
melifaro [Wed, 16 Dec 2015 10:14:16 +0000 (10:14 +0000)]
Provide additional lle data in IPv6 lltable dump used by ndp(8).
Before the change, things like lle state were queried via
SIOCGNBRINFO_IN6 by ndp(8) for _each_ lle entry in dump.
This ioctl was added in 1999, probably to avoid touching rtsock code.
This change maps SIOCGNBRINFO_IN6 data to standard rtsock dump the
following way:
expire (already) maps to rtm_rmx.rmx_expire
isrouter -> rtm_flags & RTF_GATEWAY
asked -> rtm_rmx.rmx_pksent
state -> rtm_rmx.rmx_state (maps to rmx_weight via define)
des [Wed, 16 Dec 2015 09:17:07 +0000 (09:17 +0000)]
Reset bufpos to 0 immediately after refilling the buffer. Otherwise, we
risk leaving the connection in an indeterminate state if the server fails
to send a chunk delimiter. Depending on the application and on the sizes
of the preceding chunks, the result can be anything from missing data to a
segfault. With this patch, it will be reported as a protocol error.
melifaro [Wed, 16 Dec 2015 09:16:06 +0000 (09:16 +0000)]
Fix ARP reply handling changed in r286955.
If source of ARP request didn't pass the routing check
(e.g. not in directly connected network), be polite and
still answer the request instead of dropping frame.
ngie [Wed, 16 Dec 2015 09:11:11 +0000 (09:11 +0000)]
Integrate a number of testcases from tools/regression/lib/msun
into the FreeBSD test suite
There's no functional change with these testcases; they're purposely
being left in TAP format for the time being
Other testcases which crash on amd64/i386 as-is have not been
integrated yet (they need to be retested on a later version of
CURRENT, as I haven't used i386 in some time)
kib [Wed, 16 Dec 2015 08:48:37 +0000 (08:48 +0000)]
Optimize vop_stdadvise(POSIX_FADV_DONTNEED). Instead of looking up a
buffer for each block number in the range with gbincore(), look up the
next instantiated buffer with the logical block number which is
greater or equal to the next lblkno. This significantly speeds up the
iteration for sparce-populated range.
Move the iteration into new helper bnoreuselist(), which is structured
similarly to flushbuflist().
Reported and tested by: pho
Reviewed by: markj
Sponsored by: The FreeBSD Foundation
kib [Wed, 16 Dec 2015 08:39:51 +0000 (08:39 +0000)]
Simplify the loop step in the flushbuflist() and make it independed on
the type stability of the buffers memory. Instead of memoizing
pointer to the next buffer and validating it, remember the next
logical block number in the bo list and re-lookup.
Reviewed by: markj
Tested by: pho
Sponsored by: The FreeBSD Foundation
ngie [Wed, 16 Dec 2015 08:09:03 +0000 (08:09 +0000)]
Integrate tools/regression/lib/libc/nss into the FreeBSD test suite as
lib/libc/tests/nss
- Convert the testcases to ATF
- Do some style(9) cleanups:
-- Sort headers
-- Apply indentation fixes
-- Remove superfluous parentheses
- Explicitly print out debug printfs for use with `kyua {debug,report}`; for
items that were overly noisy, they've been put behind #ifdef DEBUG
conditionals
- Fix some format strings
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