a kernel history, settable via the SCDEBUG_KERNHIST flag.
this requires a fairly significantly different set of messages than the
normal debug as histories are restricted:
- each message can take one literal format string and upto 4
arguments
- the arguments can not be strings if you want vmstat -u to
work (this could be fixed, and i might, as it would be nice
if we could print syscall names as well as numbers.)
introduce SCDEBUG_DEFAULT that is settable in the kernel config.
fix a problem in kernhist_dump_histories() where it would crash when a
history with no allocated entries was found.
extend kernhist_dumpmask() to handle the usbhist and scdebughist.
* add redirects to ~user translation
* fix bugs around ~user translation
* add schema detection for absolute redirects
* fixed few memory leaks
* bunch of minor tweaks
* removed -r support
* smarter redirects
OK mrg@
USB_DEBUG doesn't depend upon other options.
USBHIST depends upon USB_DEBUG and KERNHIST.
now i can build a kernel with just one of either USB_DEBUG or USBHIST
and the right thing happens.
- Define a constant for the minimum number of segments and use that.
- Remove unused sc_lock
- Use single variables instead of arrays of 1 element
- To the transfer size and segment size negotiation more correctly
- Make vr_bp NULL when unused.
- Add missing abort calls
the buffer in the previous mapping did, clear the bounce bit. Fixes the
ld_virtio.c bug with machines 8GB and dd if=/dev/zero of=crash bs=1g count=4.
- Allocate with M_ZERO instead of doing memset
- The panic string can take a format, use it.
- When checking for the bounce buffer boundary check addr + len < limit, not
addr < limit.
In gunzip(1), treat trailing garbage as a warning and not an error. This
allows scripts to distinguish it between real fatal errors, for instance a
CRC mismatch.
Update manual page for the behavior change.
PR: bin/203873
Submitted by: Eugene Grosbein <eugen grosbein net>
MFC after: 2 weeks
