the arguments array instead of array itself. ia64 syscall arguments are
readily available in the frame, point args to it, do not do unnecessary
bcopy. Still reserve the array in syscall_args for ia32 emulation.
Suggested and reviewed by: marcel
MFC after: 1 month
Make sure not to requeue freed mbuf in sge_start_locked(). This
should fix NULL pointer dereference panic.
Reported by: Nikolay Denev <ndenev <> gmail dot com>
Submitted by: jhb
Implement an optional delay to the ddb reset/reboot command.
This allows textdumps to be run automatically with unattended reboots
after a resonable timeout, while still permitting an administrator to
break into debugger if attached to the console at the time of the
event for further debugging. Cap the maximum delay at 1 week to avoid
highly accidental results, and default to 15s in case of problems
parsing the timeout value.
Move hex2dec helper function from db_thread.c to db_command.c to make
it generally available and prefix it with a "db_" to avoid namespace
collisions.
Reviewed by: rwatson
MFC after: 4 weeks
Improve IPsec flow distribution for better netisr parallelism.
Instead of using the pointer that would have the last bits masked in a %
statement in netisr_select_cpuid() to select the queue, use the SPI.
Reviewed by: rwatson
MFC after: 4 weeks
APIC interrupt that fires when a threshold of corrected machine check
events is reached. CMCI also includes a count of events when reporting
corrected errors in the bank's status register. Note that individual
banks may or may not support CMCI. If they do, each bank includes its own
threshold register that determines when the interrupt fires. Currently
the code uses a very simple strategy where it doubles the threshold on
each interrupt until it succeeds in throttling the interrupt to occur
only once a minute (this interval can be tuned via sysctl). The threshold
is also adjusted on each hourly poll which will lower the threshold once
events stop occurring.
Tested by: Sailaja Bangaru sbappana at yahoo com
MFC after: 1 month
independent code. Move this code into mincore(), and eliminate the
page queues lock from pmap_mincore().
Push down the page queues lock into pmap_clear_modify(),
pmap_clear_reference(), and pmap_is_modified(). Assert that these
functions are never passed an unmanaged page.
Eliminate an inaccurate comment from powerpc/powerpc/mmu_if.m:
Contrary to what the comment says, pmap_mincore() is not simply an
optimization. Without a complete pmap_mincore() implementation,
mincore() cannot return either MINCORE_MODIFIED or MINCORE_REFERENCED
because only the pmap can provide this information.
Eliminate the page queues lock from vfs_setdirty_locked_object(),
vm_pageout_clean(), vm_object_page_collect_flush(), and
vm_object_page_clean(). Generally speaking, these are all accesses
to the page's dirty field, which are synchronized by the containing
vm object's lock.
Reduce the scope of the page queues lock in vm_object_madvise() and
vm_page_dontneed().
Reviewed by: kib (an earlier version)
arbitrary frequencies into hardclock(), statclock() and profclock() calls.
Same code with minor variations duplicated several times over the tree for
different timer drivers and architectures.
- Switch all x86 archs to new functions, simplifying the code and removing
extra logic from timer drivers. Other archs are also welcome.
on exit, that is done once in thread_exit() and the second time in
proc_reap(), by clearing td_incruntime.
Use the opportunity to revert to the pre-RUSAGE_THREAD exporting of ruxagg()
instead of ruxagg_locked() and use it from thread_exit().
Diagnosed and tested by: neel
MFC after: 3 days
Intention of this commit is to let us take a full advantage
of libusb(8) ported to Linux. This decreases a possibility of getting
any collisions within ioctl() "command" space, especially with
relation to LINUX_SNDCTL_SEQ... stuff.
Basically, we provide commands, that will be mapped in the kernel
to correct ones and forward those to the USB layer. Port enabling
functionality brought with this patch is here:
http://www.freebsd.org/cgi/query-pr.cgi?pr=146895
Bump __FreeBSD_version to catch, since which version installing a
port makes sense.
This patch should bring no regressions. So far, only i386 is tested.
Tested by: thompsa@
Reviewed by: thompsa@
OKed by: netchild@
The arcstats.l2_write_bytes_written kstat counter introduced
in r205231 was duplicite with vendor's arcstats.l2_write_bytes counter
imported in r208373 (OpenSolaris revision 8582:df9361868dbe)
Approved by: pjd, delphij (mentor)
MFC after: 3 days
Extend struct sysvec with three new elements:
sv_fetch_syscall_args - the method to fetch syscall arguments from
usermode into struct syscall_args. The structure is machine-depended
(this might be reconsidered after all architectures are converted).
sv_set_syscall_retval - the method to set a return value for usermode
from the syscall. It is a generalization of
cpu_set_syscall_retval(9) to allow ABIs to override the way to set a
return value.
sv_syscallnames - the table of syscall names.
Use sv_set_syscall_retval in kern_sigsuspend() instead of hardcoding
the call to cpu_set_syscall_retval().
The new functions syscallenter(9) and syscallret(9) are provided that
use sv_*syscall* pointers and contain the common repeated code from
the syscall() implementations for the architecture-specific syscall
trap handlers.
Syscallenter() fetches arguments, calls syscall implementation from
ABI sysent table, and set up return frame. The end of syscall
bookkeeping is done by syscallret().
Take advantage of single place for MI syscall handling code and
implement ptrace_lwpinfo pl_flags PL_FLAG_SCE, PL_FLAG_SCX and
PL_FLAG_EXEC. The SCE and SCX flags notify the debugger that the
thread is stopped at syscall entry or return point respectively. The
EXEC flag augments SCX and notifies debugger that the process address
space was changed by one of exec(2)-family syscalls.
The i386, amd64, sparc64, sun4v, powerpc and ia64 syscall()s are
changed to use syscallenter()/syscallret(). MIPS and arm are not
converted and use the mostly unchanged syscall() implementation.
Reviewed by: jhb, marcel, marius, nwhitehorn, stas
Tested by: marcel (ia64), marius (sparc64), nwhitehorn (powerpc),
stas (mips)
MFC after: 1 month
device, make sure we have no real HPET device entry with same ID.
As side effect, it potentially allows several HPETs to be attached.
Use first of them for timecounting, rest (if ever present) could later
be used as event sources.
memory on a platform. Tested on the Sibyte with 256MB and 1GB memory
configurations.
- Replace vtophys() with MIPS_KSEG0_TO_PHYS() to convert a page table
page's virtual address to physical. We can safely do this because
page table pages are allocated out of KSEG0.
- Add an assertion to verify that when a page table page is freed it
contains all zeroes. We can now use it after allocation without
zeroing it.
DDB so that all the fields line up.
- Print out the tid of the per-CPU idlethread instead of the pid since
the idle process is now shared across all idle threads.
MFC after: 1 month
locate a high memory area for the heap using the SMAP.
- Read the number of hard drive devices from the BIOS instead of hardcoding
a limit of 128. Some BIOSes duplicate disk devices once you get beyond
the maximum drive number.
MFC after: 1 month
fd_set bits in select(2). It seems that historical behaviour is to not
reporting exception on EOF, and several applications are broken.
Reported by: Yoshihiko Sarumaru <ysarumaru gmail com>
Discussed with: bde
PR: ports/140934
MFC after: 2 weeks
- Adds re-partitioning TLB per core for enabled threads.
- Adds hardware thread id to cpuid mapping
- updates rge driver packet distribution and message ring handling
threads to be started based on hardware thread id.
- remove unused early debugging code to set control registers.
- coding style fixes
Approved by: rrs (mentor)
where running ofwdump could cause hangs by forcing all secondary CPUs
into a busy wait with interrupts off during the call.
Following section 8.4 of the Open Firmware PowerPC processor binding,
the firmware is free to overwrite the system interrupt handlers during
OF calls, restoring the OS handlers on exit. On single CPU systems, this
process is invisible to the operating system. On multiple CPU systems,
taking any exception on a secondary CPU while an OF call is in progress
ends with that exception vectored into OF, resulting in a slow movement
of the entire system into firmware context and a machine hang.
MFC after: 3 days
