This information can be very valuable for CPU sleep-time (and respectively
idle power consumption) optimization.
Add counters for timer-related IPIs.
Reviewed by: jhb@ (previous version)
New code that creates character devices shouldn't use device unit
numbers, but only si_drv[12] to hold pointer to per-device data. Make
this function more future proof by removing the unit number argument.
Discussed with: kib
* Don't strdup the name when calling deviceRegister because the string is
copied within new_device.
* Use a subtype of 165, not 3, when creating a slice in noninteractive
mode.
PR: bin/135333
PR: bin/66350
Approved by: rrs (mentor)
MFC after: 1 month
reading current frequency on every period. Instead do it only after
changing and periodically from time to time if somebody else change it.
Also dynamically decrease sampling frequency up to 4 times on inactivity,
Update libc assembly code to use macros that work on both o32 and n64.
Merge string functions from NetBSD.
The changes are from http://svn.freebsd.org/base/user/jmallett/octeon
Approved by: rrs (mentor), jmallett
* Quote '*', '?' and '['. While it may be more useful to expand them to
matching pathnames, this at least matches with the completion we do.
* '@' is a regular character for filenames. Some other shells do
@<hostname> completion but we do not.
* Prefix names starting with '-' and '+' with './' so they are not seen as
options.
instead of 4-byte ones. Because the mouse pointer can start part way
through a character cell, 4-byte memory operations are not necessarily
aligned, triggering a fatal alignment exception when the console pointer
was moved on PowerPC G5 systems.
MFC after: 3 days
This uses the new libedit completion function with quoting support.
Unlike NetBSD, there is no 'set +o tabcomplete' option to disable
completion. I do not see any reason for such a special treatment, as
completion is rather useful and it is possible to do
bind ^I ed-insert
to disable completion and insert a tab character instead.
Submitted by: Guy Yur
The completer recognizes characters escaped with backslashes as being
literal parts of a word, and adds backslashes to avoid almost all
misinterpretation. In particular, filenames containing spaces can be
completed correctly.
For bug compatibility with the NetBSD version, the improved completion
function has a new name, _el_fn_sh_complete, and _el_fn_complete is
unchanged.
Submitted by: Guy Yur
The element matches[0] is the common prefix and is not counted in len, so
subtracting 1 is not needed. A counter for the number of matches per line
was incremented twice.
Submitted by: Guy Yur
- Allow setting format, resolution and accuracy of BPF time stamps per
listener. Previously, we were only able to use microtime(9). Now we can
set various resolutions and accuracies with ioctl(2) BIOCSTSTAMP command.
Similarly, we can get the current resolution and accuracy with BIOCGTSTAMP
command. Document all supported options in bpf(4) and their uses.
- Introduce new time stamp 'struct bpf_ts' and header 'struct bpf_xhdr'.
The new time stamp has both 64-bit second and fractional parts. bpf_xhdr
has this time stamp instead of 'struct timeval' for bh_tstamp. The new
structures let us use bh_tstamp of same size on both 32-bit and 64-bit
platforms without adding additional shims for 32-bit binaries. On 64-bit
platforms, size of BPF header does not change compared to bpf_hdr as its
members are already all 64-bit long. On 32-bit platforms, the size may
increase by 8 bytes. For backward compatibility, struct bpf_hdr with
struct timeval is still the default header unless new time stamp format is
explicitly requested. However, the behaviour may change in the future and
all relevant code is wrapped around "#ifdef BURN_BRIDGES" for now.
- Add experimental support for tagging mbufs with time stamps from a lower
layer, e.g., device driver. Currently, mbuf_tags(9) is used to tag mbufs.
The time stamps must be uptime in 'struct bintime' format as binuptime(9)
and getbinuptime(9) do.
Reviewed by: net@
of times the system was forced to sleep when requesting a new allocation.
Expand the debugger hook, db_show_uma, to display these results as well.
This has proven to be very useful in out of memory situations when
it is not known why systems have become sluggish or fail in odd ways.
Reviewed by: rwatson alc
Approved by: scottl (mentor) peter
Obtained from: Yahoo Inc.
state lower than the lowest one supported by the current CPU. This closes
some races with changes to the hw.acpi.cpu_cx_lowest sysctl while Cx
states for individual CPUs were changing (e.g. unplugging the AC adapter
of a laptop) that could result in panics.
Submitted by: Giovanni Trematerra
Tested by: David Demelier demelier dot david of gmail
MFC after: 3 days
slice creation overrideable too, but there's a few problems doing that
for the duplicated partitions (s1 and s2), so just comment that it
needs work.
MFC after: 3 days
I used the following command to determine which source files were
unneeded:
| for i in `find lib/clang -name '*.o'`
| do
| MATCHES="`(nm -g --defined-only $i; nm -g --defined-only \
| usr.bin/clang/clang/clang) | sed -e 's/.* //' | \
| sort | uniq -d | wc -l`"
| [ $MATCHES -eq 0 ] && echo "$i: unneeded"
| done
This should slightly improve the build times.
the consistency between PCPU fpcurthread and the state of the FPU.
Explicitely assert that the calling conventions for fpudrop() are
adhered too. In cpu_thread_exit(), add missed critical section entrance.
Reviewed by: bde
Tested by: pho
MFC after: 1 month
