in the manpage by having it display the current CPU (ki_oncpu) rather
than the previously used CPU (ki_lastcpu). ki_lastcpu is still used for
all other thread states.
Reported by: Chris Ross <cross+freebsd@distal.com>
MFC after: 1 week
userland can reply to a message with NGM_HASREPLY bit set. In this case
we should not wait for a response to a responce.
PR: 176771
Submitted by: Keith Reynolds <keith.reynolds tidalscale.com>
* a flags field that lets me know what's going on;
* the hardware ratecode, unmolested by conversion to a bitrate;
* the HAL rs_flags field, useful for debugging;
* specifically mark aggregate sub-frames.
This stuff sorely needs tidying up - it's missing some important
stuff (eg numdelims) and it would be nice to put the flags at the
beginning rather than at the end.
Tested:
* AR9380, STA mode, 2x2 HT40, monitoring RSSI and EVM values
- We need to add "-mllvm -arm-enable-ehabi" to clangs CFLAGS when
generating the unwind tables to tell it to add the required directives to
the assembly it generates.
when the kernel attempts to unwind through this function.
The .fnstart and .fnend in this function should be moved to macros but we
are currently missing an END macro on ARM.
they can easily be used by later post-processing. When searching for
a compiled-in fdt blob, use the section headers to get the size and
location of the .dynsym section to do a symbol search.
This fixes a problem where the search could overshoot the symbol
table and wander into the string table. Sometimes that was harmless
and sometimes it lead to spurious panic messages about an offset
bigger than the module size.
elf headers, mask out the high nibble of that address. This effectly makes
the entry point the offset from the load address, and it gets adjusted for
the actual load address before jumping to it.
Masking the high nibble makes assumptions about memory layout that are true
for all the arm platforms we support right now, but it makes me uneasy.
This needs to be revisited.
Change size requested to malloc(9) now that callwheel buckets are
callout_list and not callout_tailq anymore. This change was already
there but it seems it got lost after code churn in r248032.
Reported by: alc, kib
- Use u_int values for length and max_length values
- Add a way to reset the max_length heuristic in order to have the
possibility to reuse the mechanism consecutively without rebooting
the machine
- Add a way to quick display top5 contented buckets in the system for
the max_length value.
This should give a quick overview on the quality of the hash table
distribution.
Sponsored by: EMC / Isilon storage division
Reviewed by: jeff, davide
proper locking. This doesn't prevent in any case reclaim of the vnode.
Avoid this not going over-the-wire in this case and relying on subsequent
smbfs_getattr() call to restore consistency.
While I'm here, change a couple of SMBVDEBUG() in MPASS().
sbmfs_smb_lookup() doesn't and shouldn't know about '.' and '..'
Reported by: pho's stress2 suite
I can 100% reliably trigger this on TID 1 traffic by using iperf -S 32
<client fields> to create traffic that maps to TID 1.
The reference driver doesn't do this check.
future further optimizations where the vm_object lock will be held
in read mode most of the time the page cache resident pool of pages
are accessed for reading purposes.
The change is mostly mechanical but few notes are reported:
* The KPI changes as follow:
- VM_OBJECT_LOCK() -> VM_OBJECT_WLOCK()
- VM_OBJECT_TRYLOCK() -> VM_OBJECT_TRYWLOCK()
- VM_OBJECT_UNLOCK() -> VM_OBJECT_WUNLOCK()
- VM_OBJECT_LOCK_ASSERT(MA_OWNED) -> VM_OBJECT_ASSERT_WLOCKED()
(in order to avoid visibility of implementation details)
- The read-mode operations are added:
VM_OBJECT_RLOCK(), VM_OBJECT_TRYRLOCK(), VM_OBJECT_RUNLOCK(),
VM_OBJECT_ASSERT_RLOCKED(), VM_OBJECT_ASSERT_LOCKED()
* The vm/vm_pager.h namespace pollution avoidance (forcing requiring
sys/mutex.h in consumers directly to cater its inlining functions
using VM_OBJECT_LOCK()) imposes that all the vm/vm_pager.h
consumers now must include also sys/rwlock.h.
* zfs requires a quite convoluted fix to include FreeBSD rwlocks into
the compat layer because the name clash between FreeBSD and solaris
versions must be avoided.
At this purpose zfs redefines the vm_object locking functions
directly, isolating the FreeBSD components in specific compat stubs.
The KPI results heavilly broken by this commit. Thirdy part ports must
be updated accordingly (I can think off-hand of VirtualBox, for example).
Sponsored by: EMC / Isilon storage division
Reviewed by: jeff
Reviewed by: pjd (ZFS specific review)
Discussed with: alc
Tested by: pho
Introduce a new KPI that verifies if the page cache is empty for a
specified vm_object. This KPI does not make assumptions about the
locking in order to be used also for building assertions at init and
destroy time.
It is mostly used to hide implementation details of the page cache.
Sponsored by: EMC / Isilon storage division
Reviewed by: jeff
Reviewed by: alc (vm_radix based version)
Tested by: flo, pho, jhb, davide
