to further reduce latency for threads in this queue. This should help
as threads transition from realtime to timeshare. The latency is
bound to a max of sched_slice until we have more than sched_slice / 6
threads runnable. Then the min slice is allotted to all threads and
latency becomes (nthreads - 1) * min_slice.
Discussed with: mav
solve power loss problems with dishonest write caches. However, it
should improve the situation and force a full fsck when it is unable
to resolve with the journal.
- Resolve a case where the journal could wrap in an unsafe way causing
us to prematurely lose journal entries in very specific scenarios.
Discussed with: mckusick
MFC after: 1 month
on timing of the operations and not real lookup, bringing too many
false positives. Remove the whole mechanism. If it needs to be
implemented, next time it should really be done in the proper way.
- Fix VOP_GETATTR() in order to cope with userland bugs that would
change the type of file and not panic. Instead it gets the entry as
if it is not existing.
Reported and tested by: flo
MFC after: 2 months
X-MFC: 241519, 242536,242616
There is one known issue: Some probes will display an error message along the
lines of: "Invalid address (0)"
I tested this with both a simple dtrace probe and dtruss on a few different
binaries on 32-bit. I only compiled 64-bit, did not run it, but I don't expect
problems without the modules loaded. Volunteers are welcome.
MFC after: 1 month
Element Descriptor page if it is not supported. This removes one error
message from verbose logs during boot on systems with some enclosures.
Sponsored by: iXsystems, Inc.
use the -mprofiler-epilogue option if the compiler is clang, as the flag
is not supported. While here, fix up the value indentations.
MFC after: 1 week
default compiler. This has two parts:
- Make sys/boot/pc98/boot2 always build with gcc for now, until we can
figure out a way to shrink it enough when building with clang.
- Since sys/boot/p98/cdboot uses .code16 directives, which are not yet
supported by clang's integrated assembler, use -no-integrated-as,
similar to sys/boot/i386/cdboot.
Reviewed by: nyan
MFC after: 1 week
date: 2009/06/12 02:03:51; author: dlg; state: Exp; lines: +59 -69
rewrite the way states from pfsync are merged into the local state tree
and the conditions on which pfsync will notify its peers on a stale update.
each side (ie, the sending and receiving side) of the state update is
compared separately. any side that is further along than the local state
tree is merged. if any side is further along in the local state table, an
update is sent out telling the peers about it.
case keys had already been freed. If encountering such state, then
just release last reference.
Not sure this can happen as a runtime race, but can be reproduced by
the following scenario:
- enable pfsync
- disable pfsync
- wait some time
- enable pfsync
ps-poll is totally broken in its current form.
This should unbreak things enough to let people use PS-POLL devices,
but leave it in place for me to finish PS-POLL handling.
function use that for JBOD and Thunderbolt disk write command. Now
we only have one implementation in mfi.
- Fix dumping on Thunderbolt cards. Polled IO commands do not seem to
be normally acknowledged by changing cmd_status to MFI_STAT_OK.
In order to get acknowledgement of the IO is complete, the Thunderbolt
command queue needs to be run through. I added a flag MFI_CMD_SCSI
to indicate this command is being polled and to complete the
Thunderbolt wrapper and indicate the result. This flag needs to be
set in the JBOD case in case if that us using Thunderbolt card.
When in the polling loop check for completed commands.
- Remove mfi_tbolt_is_ldio and just do the check when needed.
- Fix an issue when attaching of disk device happens when a device is
already scheduled to be attached but hasn't attached.
- add a tunable to allow raw disk attachment to CAM via:
hw.mfi.allow_cam_disk_passthrough=1
- fixup aborting of commands (AEN and LD state change). Use a generic
abort function and only wait the command being aborted not both.
Thunderbolt cards don't seem to abort commands so the abort times
out.
submenus. See menusets.4th(8) for additional details including examples.
Discussed on arch and recommended for inclusion at the devsummit.
This change does not alter the appearance or user experience, only enhances
possibilities.
Reviewed by: adrian (co-mentor)
Approved by: adrian (co-mentor)
counter) when the syncache doesn't want the driver to reply to an
incoming SYN. This fixes a harmless bug where tids_in_use would
go out of sync with the hardware counter.
MFC after: 3 days
the non-aggregate path.
I "cheated" by using some TX setup code in our HAL that isn't present
in the atheros HAL (or Linux ath9k.)
The old path for forming aggregates was:
* setup the rate control in the first descriptor;
* call chaintxdesc() on all the frames;
* call setupfirsttxdesc() on the first descrpitor in the first
frame;
* call setuplasttxdesc() on the last descriptor in the last frame.
The new path for forming aggregates looks like the non-aggregate path:
* call setuptxdesc() on the first descriptor in the first frame;
* setup the rate control in the first descriptor;
* call filltxdesc() on each descriptor in the frame;
* if it's an aggregate - call set11n_aggr_{first, middle, last} as
appropriate (see the code for a description of what is "appropriate".)
Now, this is done primarily for the AR9300 HAL - it doesn't implement
the first set of aggregate functions. It just has the older methods
and the "first/middle/last" aggregate methods. So, let's convert the
code to use these.
Note: the AR5416 HAL in FreeBSD had that code (from me, a while ago)
and a previous commit brought it up to behave the same as the AR9300
HAL routines.
There's some further tidyups to be done - specifically, avoid doing
multiple calls to the 11n descriptor functions. I shouldn't call
clr11n_aggr(), then set11n_aggr_middle(), then also set11n_aggr_first().
On (at least MIPS) the TX descriptors are in non-cachable memory and
this will cause multiple slow writes.
I'll debug/tidy that up in a future commit.
Tested:
* AR9280, STA
* AR9280/AR9160, AP
* AR9380, STA (using a local, closed source HAL, sorry!)
the 'PREVENT/ALLOW MEDIUM REMOVAL' SCSI command. An example of such a
device is the STmicro ST72682. We send the SCSI command for every open and
close, which can result in a significant amount of spam on the console
during boot.
Reviewed by: hps@
them, please let me know if not). Most of these are of the form:
static const struct bzzt_type {
[...list of members...]
} const bzzt_devs[] = {
[...list of initializers...]
};
The second const is unnecessary, as arrays cannot be modified anyway,
and if the elements are const, the whole thing is const automatically
(e.g. it is placed in .rodata).
I have verified this does not change the binary output of a full kernel
build (except for build timestamps embedded in the object files).
Reviewed by: yongari, marius
MFC after: 1 week
versions of clang 3.2, about comparing enum uni_cause values against
integer constants which fall outside the enum range. No functional
change.
MFC after: 3 days
temporarily stores characters if the TTY buffer is full when
used a as a console. This can happen when a console is suspended.
Also properly do the flow stop signalling when this happens and
flow start when the condition changes back to normal again.
Bump __FreeBSD_version to force external kernel modules
to be recompiled. No kernel API changes.
MFC after: 1 week
Suggested by: ed @
