When configuring a system-wide couting PMC, hwpmc was incorrectly logging
process mappings for that PMC. Nothing ever reads pmc logs out of a
counting PMC, so the log buffers were leaked when the PMC was
deconfigured. The process mappings are only useful for sampling PMCs
anyway, so only log the mappings if the PMC is a sampling PMC.
This bug would cause allocating sample-mode PMCs to fail with ENOMEM
after allocating several counting-mode PMCs.
Approved by: emaste (mentor)
r208454,r208455,r208458:
r207920:
Back out r205134. It is not stable.
r207934:
Add missing new line characters to the warnings.
r207936:
Eventhough r203504 eliminates taste traffic provoked by vdev_geom.c,
ZFS still like to open all vdevs, close them and open them again,
which in turn provokes taste traffic anyway.
I don't know of any clean way to fix it, so do it the hard way - if we can't
open provider for writing just retry 5 times with 0.5 pauses. This should
elimitate accidental races caused by other classes tasting providers created on
top of our vdevs.
Reported by: James R. Van Artsdalen <james-freebsd-fs2@jrv.org>
Reported by: Yuri Pankov <yuri.pankov@gmail.com>
r207937:
I added vfs_lowvnodes event, but it was only used for a short while and now
it is totally unused. Remove it.
r207970:
When there is no memory or KVA, try to help by reclaiming some vnodes.
This helps with 'kmem_map too small' panics.
No objections from: kib
Tested by: Alexander V. Ribchansky <shurik@zk.informjust.ua>
r208142:
The whole point of having dedicated worker thread for each leaf VDEV was to
avoid calling zio_interrupt() from geom_up thread context. It turns out that
when provider is forcibly removed from the system and we kill worker thread
there can still be some ZIOs pending. To complete pending ZIOs when there is
no worker thread anymore we still have to call zio_interrupt() from geom_up
context. To avoid this race just remove use of worker threads altogether.
This should be more or less fine, because I also thought that zio_interrupt()
does more work, but it only makes small UMA allocation with M_WAITOK.
It also saves one context switch per I/O request.
PR: kern/145339
Reported by: Alex Bakhtin <Alex.Bakhtin@gmail.com>
r208147:
Add task structure to zio and use it instead of allocating one.
This eliminates the only place where we can sleep when calling zio_interrupt().
As a side-effect this can actually improve performance a little as we
allocate one less thing for every I/O.
Prodded by: kib
r208148:
Allow to configure UMA usage for ZIO data via loader and turn it on by
default for amd64. On i386 I saw performance degradation when UMA was used,
but for amd64 it should help.
r208166:
Fix userland build by making io_task available only for the kernel and by
providing taskq_dispatch_safe() macro.
r208454:
Remove ZIO_USE_UMA from arc.c as well.
r208455:
ZIO_USE_UMA is no longer used.
r208458:
Create UMA zones unconditionally.
Remove unnecessary pointer increment. A wrong pointer may be passed to
free(9) and it can cause kernel panic when there are multiple graphics
controllers in the system.
Change ad_firmware_geom_adjust() to operate on a struct disk * only and
hook it up to ada(4) also. While at it, rename *ad_firmware_geom_adjust()
to *ata_disk_firmware_geom_adjust() etc now that these are no longer
limited to ad(4). This also allows to maintain a compatibility shim for
pc98_ad_firmware_geom_adjust() for the tier-1 PC98 in stable/8.
Reviewed by: mav (r208349)
Simplify partition type parsing by using a data-oriented model.
While there add more Apple and Linux partition types.
This unbreaks the build after r208341.
Reported by: many
Pointy hat to: me
Add a sentence to the man page explaining that the -d option
can only be used when ntpd is compiled with DEBUG support.
PR: docs/138206
Submitted by: Oliver Pinter (oliver dot pntr at gmail dot com)
Approved by: roberto
Update to a config.h created by a file 5.03 configure script. This causes
file.1 to contain the correct version number and SIZEOF_LONG_LONG to be
defined as appropriate, which is crucial for 64-bit big-endian ELF files
to be handled correctly on big-endian systems.
PR: 146387
Reviewed by: delphij
Allow the experimental NFSv4 client to use cached attributes
when a write delegation is held. Also, add a missing
mtx_unlock() call for the ACL debugging code.
Fix a long-standing bug in the PowerPC OFW call function on SMP machines
by forcing all secondary CPUs into a busy wait with interrupts off during
the call. This bug caused ofwdump -a to hang the system.
Following section 8.4 of the Open Firmware PowerPC processor binding,
the firmware is free to overwrite the system interrupt handlers during
OF calls, restoring the OS handlers on exit. On single CPU systems, this
process is invisible to the operating system. On multiple CPU systems,
taking any exception on a secondary CPU while an OF call is in progress
ends with that exception vectored into OF, resulting in a slow movement
of the entire system into firmware context and a machine hang.
On PowerMac11,2 and (presumably) PowerMac12,1, we need to quiesce the
firmware in order to take over control of the SMU. Without doing this,
the firmware background process doing fan control will run amok as we
take over the system and crash the management chip.
This is limited to these two machines because our kernel is heavily
dependent on firmware accesses, and so quiescing firmware can cause
nasty problems.
Add support for the U4 PCI-Express bridge chipset used in late-generation
Powermac G5 systems. MSI and several other things are not presently
supported.
The U3/U4 internal device support portions of this change were contributed
by Andreas Tobler.
Introduce 'netDev=ANY' support for scripted (install.cfg) installs, which
results in the first ethernet interface with physical link being selected.
Approved by: cperciva (mentor)
IEEE Std 1003.1, 2004 Edition states:
"The escape sequence '\n' shall match a <newline> embedded in
the pattern space."
It is unclear whether this also applies to a \n embedded in a
character class. Disable the existing handling of \n in a character
class following Mac OS X, GNU sed version 4.1.5 with --posix, and
SunOS 5.10 /usr/bin/sed.
Pointed by: Marius Strobl
Obtained from: Mac OS X
Follow POSIX (IEEE Std 1003.1, 2004 Edition) in the implementation
of the y (translate) command.
"If a backslash character is immediately followed by a backslash
character in string1 or string2, the two backslash characters shall
be counted as a single literal backslash character"
Pointed by: Marius Strobl
Obtained from: Mac OS X
The transition to Subversion allows us to rename files without
repo-copy hacks.
Remove the test-number prefix from the name of the output files,
so that new test cases can be easily added.
