Binary state node is added, so that userland programs do not have
to parse human readable state string.
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7268
r301217 re-added per-connection L2 caching from a previous change,
but it omitted caching in the fast path. Add it.
Reviewed By: gallatin
Approved by: gnn (mentor)
Differential Revision: https://reviews.freebsd.org/D7239
The asynchronous I/O changes made previously result in different
behavior out of the box. Previously all AIO requests failed with
ENOSYS / SIGSYS unless aio.ko was explicitly loaded. Now, some AIO
requests complete and others ("unsafe" requests) fail with EOPNOTSUPP.
Reword the introductory paragraph in aio(4) to add a general
description of AIO before describing the vfs.aio.enable_unsafe sysctl.
Remove the ENOSYS error description from aio_fsync(2), aio_read(2),
and aio_write(2) and replace it with a description of EOPNOTSUPP.
Remove the ENOSYS error description from aio_mlock(2).
Log a message to the system log the first time a process requests an
"unsafe" AIO request that fails with EOPNOTSUPP. This is modeled on
the log message used for processes using the legacy pty devices.
Reviewed by: kib (earlier version)
MFC after: 1 week
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D7151
Two notes:
- I allow AIO on reclaimed vnodes, since it is deterministically terminated
fast.
- devfs mounts are marked as MNT_LOCAL, but device vnodes have type
VCHR, so the slow device io is not allowed.
Reviewed by: jhb
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D7273
warnings for some kernel events, mostly intended for the use of
obsoleted or otherwise undersired interfaces.
This is an abstracted and race-expelled code from compat pty driver.
Requested and reviewed by: jhb
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D7270
* Add acpi_if.h to the SRC list in the uart module
* Only include new acpi headers when they are needed
Obtained from: ABT Systems Ltd
MFC after: 1 month
Sponsored by: The FreeBSD Foundation
the uart class to use in a similar way as the fdt driver.
Obtained from: ABT Systems Ltd
MFC after: 1 month
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D7248
This avoids unnecessary access to the vmbus_softc struct on sending path.
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7257
cam_periph_releaes_locked() at the end of nvme_probe_start because we
hit an assertion which may be bogus. Instead, leak a periph until we
sort it out. Since these devices don't arrive and depart often, so
this is the lessor of two evils.
MFC after: 1 week
The each_writable_segment routine evaluates segments on a slightly little more
nuanced metric than simply "writable" or not. Rename the function to more
closely match its behavior (each_dumpable_segment).
Suggested by: jhb
Sponsored by: EMC / Isilon Storage Division
Clear unused (undocumented) CAM bytes while setting a key;
without that, hardware does weird things when A-MSDU bit in QoS header
is set.
Tested with RTL8188CUS (AP) -> RTL8188EU (STA) (A-MSDU transmit).
Reported by: many
Obtained from: https://github.com/s3erios/urtwm
MFC after: 5 days
and ACPI. As such pull out what will be the common parts of the FDT cpu
detection to a new function that can be shared between them.
Reviewed by: manu
Obtained from: ABT Systems Ltd
MFC after: 1 month
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D7262
The ELF e_phnum field is only 16 bits wide. To support more than 65535 segments
(program headers), Sun's "Linker and Libraries Guide" table 7-7 (or 12-7,
depending on document version) prescribes a special first section header where
sh_info represents the real number of program headers.
Test code to follow, when it is ready.
Reference: http://docs.oracle.com/cd/E18752_01/pdf/817-1984.pdf
Reviewed by: emaste, markj
Sponsored by: EMC / Isilon Storage Division
Differential Revision: https://reviews.freebsd.org/D7255
before UFS_BALLOC() is called. I do not believe that this caused any
real issue on FreeBSD because the exclusive vnode lock is held over
the balloc/resize, the change is to make formally correct KPI use.
Based on: the Matthew Dillon' patch from DragonFly BSD
PR: 93942
Reviewed by: mckusick
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
The rootkey is burnt at production and can't be changed, thus is can be used
as a device unique ID or to generate a MAC address (This is was u-boot does).
The rootkey is exposed as a sysctl (dev.aw_sid.<unit>.rootkey).
Reviewed by: jmcneill
Differential Revision: https://reviews.freebsd.org/D6383
Fix the following panic seen when migrating a FreeBSD guest on Xen:
panic: mtx_lock() of destroyed mutex @ /usr/src/sys/dev/fb/vesa.c:541
cpuid = 0
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe001d2fa4f0
vpanic() at vpanic+0x182/frame 0xfffffe001d2fa570
kassert_panic() at kassert_panic+0x126/frame 0xfffffe001d2fa5e0
__mtx_lock_flags() at __mtx_lock_flags+0x15b/frame 0xfffffe001d2fa630
vesa_bios_save_restore() at vesa_bios_save_restore+0x78/frame 0xfffffe001d2fa680
vga_suspend() at vga_suspend+0xa3/frame 0xfffffe001d2fa6b0
isavga_suspend() at isavga_suspend+0x1d/frame 0xfffffe001d2fa6d0
bus_generic_suspend_child() at bus_generic_suspend_child+0x44/frame
[...]
This is caused because vga_sub_configure (which is called if the VGA adapter
is attached after VESA tried to initialize), points to vesa_configure, which
doesn't initialize the VESA mutex. In order to fix it, make sure
vga_sub_configure points to vesa_load, so that all the needed vesa
components are properly initialized.
Sponsored by: Citrix Systems R&D
MFC after: 3 days
PR: 209203
Reviewed by: dumbbell
Differential revision: https://reviews.freebsd.org/D7196
The prepares to kill device private fields in channel struct, which
are not flexible and extensible.
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7243
It is only needed when removing a full bucket from the per-CPU cache. The
bucket cache (uz_buckets) is protected by the zone mutex and thus the
critical section can be released before inserting into that list.
MFC after: 1 week
It's a threshold for v_free_count, which is of type u_int. This also lets
us get rid of a cast in vm_paging_needed().
Reviewed by: alc
MFC after: 1 week
