Revert r292255 because it can create bounced regions without contiguous
page offsets, which is needed for USB devices.
Another solution would be to force bouncing the full buffer always (even
when only one page requires bouncing), but this seems overly complicated and
unnecessary, and it will probably involve using more bounce pages than the
current code.
Reported by: phk
* Samsung 843T Series SSDs (MZ7WD*)
* Samsung PM851 Series SSDs (MZ7TE*)
* Samsung PM853T Series SSDs (MZ7GE*)
as known having broken NCQ TRIM support as they appear to be based on
the same controller technology as the 840 and 850 series.
I've had at least one report of the PM853 being broken, so err on the
side of caution for the above drives. The PM863/SM863 appears to be
based on a newer controller, so give it the benefit of the doubt.
fgetln(3) will returns NULL if cannot get a line from a stream.
strsep(3) it will returns NULL if the end of the string was reached.
jemalloc(3) malloc will returns NULL if it cannot allocate memory.
fgetln(3) it will returns NULL if it cannot get a line from a stream.
MFC after: 4 weeks
The ACPI and OFW PCI bus drivers as well as CardBus override this to
allocate the larger ivars to hold additional info beyond the stock PCI ivars.
This removes the need to pass the size to functions like pci_add_iov_child()
and pci_read_device() simplifying IOV and bus rescanning implementations.
As a result of this and earlier changes, the ACPI PCI bus driver no longer
needs its own device_attach and pci_create_iov_child methods but can use
the methods in the stock PCI bus driver instead.
Differential Revision: https://reviews.freebsd.org/D5891
fopen(3) returns NULL in case it can't open the STREAM.
fgetln(3) returns NULL if it can't get a line from a STREAM.
malloc returns NULL if it can't allocate memory.
2015). Correct the M500 firmware versions. EU07 was the engineering
test version, not the release version with the fix. MU07 is the
release version. It's the only Micron firmware version to actually
work. Remove support for EU07.
This brings the blacklist into parity with the Linux blacklist as of
4.5, except for the Micron M500 MU07 entry. I personally tested the
MU07 firmware on 12 machines running 6 drives each with no corruption
in the past 6 months with Netflix production loads. Prior versions of
the M500 firmware wouldn't last more than a few days.
Sponsored by: Netflix, Inc.
Submitted by: Jun Su <junsu microsoft com>
Reviewed by: jhb, kib, sephe
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D5910
It allows implementing loadable kernel modules with new actions and
without needing to modify kernel headers and ipfw(8). The module
registers its action handler and keyword string, that will be used
as action name. Using generic syntax user can add rules with this
action. Also ipfw(8) can be easily modified to extend basic syntax
for external actions, that become a part base system.
Sample modules will coming soon.
Obtained from: Yandex LLC
Sponsored by: Yandex LLC
Prefix with dashes (unordered list) and put one variable on each
line (to avoid future conflicts)
Done via the following one-liner:
> sh -c 'for i in $(make -C tests/sys/aio PROG=foo -VPROG_VARS:O); do printf "\t\t- $i\n"; done'
MFC after: 1 week
Sponsored by: EMC / Isilon Storage Division
This will allow the variables [*] to be overridden on a per-PROG basis,
which is useful when controlling "stripping" behavior for some tests
that require debug symbols or to be unstripped
DEBUG_FLAGS (similar to CFLAGS) supports appending, whereas STRIP is
an override
*: Due to how STRIP is defined in bsd.own.mk (in addition to
bsd.lib.mk and bsd.prog.mk), and the fact that bsd.test.mk pulls in
bsd.own.mk first, overriding STRIP doesn't work today.
A follow up commit is pending to "rectify" this after additional
testing is done.
Discussed with: bdrewery
MFC after: 1 week
Sponsored by: EMC / Isilon Storage Division
When using meta mode with filemon, the build is reliably incremental
safe. Bmake will use the meta files, along with filemon information,
to rebuild targets when their dependencies change, commands change,
or files they generate are missing.
Sponsored by: EMC / Isilon Storage Division
periph level. When a relevant error is reported to the periph, some
amplifying information is gathered, and the error and information are fed
to devctl with the attributes / keys system=CAM, subsystem=periph. The
'type' key will be either 'error' or 'timeout', and based on this, various
other keys are also populated.
The purpose of this is to provide a concise mechanism for error reporting
that is less noisy than the system console but higher in resolution and
fidelity than simple sysctl counters. We will be using it at Netflix to
populate a structured log and database to track errors and error trends
across our world-wide population of drives.
Submitted by: imp, scottl
Approved by: kenm
MFC after: 3 days
Sponsored by: Netflix
Differential Revision: D5943
as before. The common scheduling bits have moved from inline code in
each of the CAM periph drivers into a library that implements the
default scheduling.
In addition, a number of rate-limiting and I/O preference options can
be enabled by adding CAM_IOSCHED_NETFLIX to your config file. A number
of extra stats are also maintained. CAM_IOSCHED_NETFLIX isn't on by
default because it uses a separate BIO_READ and BIO_WRITE queue, so
doesn't honor BIO_ORDERED between these two types of operations. We
already didn't honor it for BIO_DELETE, and we don't depend on
BIO_ORDERED between reads and writes anywhere in the system (it is
currently used with BIO_FLUSH in ZFS to make sure some writes are
complete before others start and as a poor-man's soft dependency in
one place in UFS where we won't be issuing READs until after the
operation completes). However, out of an abundance of caution, it
isn't enabled by default.
Plus, this also brings in NCQ TRIM support for those SSDs that support
it. A black list is also provided for known rogues that use NCQ trim
as an excuse to corrupt the drive. It was difficult to separate out
into a separate commit.
This code has run in production at Netflix for over a year now.
Sponsored by: Netflix, Inc
Differential Revision: https://reviews.freebsd.org/D4609
the same opcode.
o Reduce number of times classifier callback is called. It is
redundant to call it just after find_op_rw(), since the last
does call it already and can have all results.
o Do immediately opcode rewrite in the ref_opcode_object().
This eliminates additional classifier lookup later on bulk update.
For unresolved opcodes the behavior still the same, we save information
from classifier callback in the obj_idx array, then perform automatic
objects creation, then perform rewriting for opcodes using indeces
from created objects.
Obtained from: Yandex LLC
Sponsored by: Yandex LLC
Some of the clang libraries build in this phase and the cross-tools
phase. Later in the cross-tools phase when they build with a default
TOOLS_PREFIX, they see a changed build command in meta mode due to
the changed DEFAULT_SYSROOT. This is avoided by passing along
TOOLS_PREFIX earlier.
Sponsored by: EMC / Isilon Storage Division
This avoids 'build command changed' due to CFLAGS/CC changes during the
normal build. Without this the build-tools targets end up rebuilding
for the *target* rather than keeping the native versions built in
build-tools.
Sponsored by: EMC / Isilon Storage Division
