callout is first initialised, using a new function callout_init_mtx().
The callout system will acquire this mutex before calling the callout
function and release it on return.
In addition, the callout system uses the mutex to avoid most of the
complications and race conditions inherent in asynchronous timer
facilities, so mutex-protected callouts have much simpler semantics.
As long as the mutex is held when invoking callout_stop() or
callout_reset(), then these functions will guarantee that the callout
will be stopped, even if softclock() had already begun to process
the callout.
Existing Giant-locked callouts will automatically pick up the new
race-free semantics. This should close a number of race conditions
in the USB code and probably other areas of the kernel too.
There should be no change in behaviour for "MP-safe" callouts; these
still need to use the techniques mentioned in timeout(9) to avoid
race conditions.
practice (which we seem to mostly follow in the tree). Move the
$FreeBSD$ tag to its more proper place after all copyright and license
notices. Add '-' to the copyright notice for Christian E. Hopps so my
copyright script picks it up.
resulting in a size_t due to C's rules of arithmetic. Rather than
bogusly cast the result to a uint8_t, fix the printf format specifier
to have a 'z' modifier which tells the compiler that the sizes really
do match.
It turns out that change 1.75 was incorrect to assume that this
'really' was a 8bit quantity. It isn't. Although the hardware
appears to limit things to < 256, it would be a bug that should be
caught by debug printf it it were. Casting it to uint8_t would have
lost this useful information.
Aslo add 'z' to a nearby debug statement that's never compiled in.
frequency as a percentage of the base rate and do not change the base
rate directly. The cpufreq framework combines these with absolute drivers
to produce synthesized levels made of one or more settings.
They have nothing at all to do with CIS parsing.
Remove some unused funce parsing: nothing used the results.
Use more of pccard_cis.h's deifnitions for the cardbus specific cis
parsing we do. More work is needed in this area.
This reduces the size of the cardbus module by 380 bytes or so...
doing it in the cpu driver. The previous code was incorrect anyway since
this value controls Px states, not throttling as the comment said. Since
we didn't support Px states before, there was no impact. Also, note that
we delay the write to SMI_CMD until after booting is complete since it
sometimes triggers a change in the frequency and we want to have all
drivers ready to detect/handle this.
- Bring IPsec support from the ports collection [1].
- Bring -o ("once only") option from the ports
collection [2].
- Adopt the Makefile framework into
usr.bin/nc/Makefile.
- Add a knob to control whether to build nc(1),
NO_NETCAT.
- Bump __FreeBSD_version so ports collection can
detect this change.
Original patchset are contributed to the ports collection by:
[1] nectar, [2] joerg.
Note: WARNS?=6 patchset spined off in this commit, in order not
to take too many files off the vendor branch.
uses the i8237 without trying to emulate the PC architecture move
the register definitions for the i8237 chip into the central include
file for the chip, except for the PC98 case which is magic.
Add new isa_dmatc() function which tells us as cheaply as possible
if the terminal count has been reached for a given channel.
utility:
The tcpdrop command drops the TCP connection specified by the
local address laddr, port lport and the foreign address faddr,
port fport.
Obtained from: OpenBSD
Reviewed by: rwatson (locking), ru (man page), -current
MFC after: 1 month
devclass. As pointed out by dfr@, devclasses don't have to share the same
linkage if multiple drivers have the same name. Newbus should match the
devclasses based on name and allocate non-conflicting unit numbers.
millisecond it is calibrating. Suggested by jhb@ and bde@. Don't clobber
the tsc_freq with the new value since it isn't accurate enough for
timecounters and the timecounter system as a whole needs support for
changing rates before we do this. Subtract 0.5% from our measurement
to account for overhead in DELAY. Note that this interface is for
estimating the clockrate and needs to work well at runtime so doing a full
calibration including disabling interrupts for a second is not feasible.
the PERF_CTRL register in our probe method so that we can tell earlier
that another driver should handle this device due to FFixedHW. This avoids
scaring users when attach failed when we really wanted probe to fail.
type. This is needed if the resource is to be released later. The RID is
still also present, though less necessary since rman_get_rid() can be used
to obtain it from the resource.
