History log of /freebsd/sys/amd64/include/pcpu.h (Results 101 – 125 of 212)
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Revision tags: release/7.2.0_cvs, release/7.2.0
# 9c797940 13-Apr-2009 Oleksandr Tymoshenko <gonzo@FreeBSD.org>

- Merge from HEAD


# 2c66ccca 01-Apr-2009 Konstantin Belousov <kib@FreeBSD.org>

Save and restore segment registers on amd64 when entering and leaving
the kernel on amd64. Fill and read segment registers for mcontext and
signals. Handle traps caused by restoration of the
invalida

Save and restore segment registers on amd64 when entering and leaving
the kernel on amd64. Fill and read segment registers for mcontext and
signals. Handle traps caused by restoration of the
invalidated selectors.

Implement user-mode creation and manipulation of the process-specific
LDT descriptors for amd64, see sysarch(2).

Implement support for TSS i/o port access permission bitmap for amd64.

Context-switch LDT and TSS. Do not save and restore segment registers on
the context switch, that is handled by kernel enter/leave trampolines
now. Remove segment restore code from the signal trampolines for
freebsd/amd64, freebsd/ia32 and linux/i386 for the same reason.

Implement amd64-specific compat shims for sysarch.

Linuxolator (temporary ?) switched to use gsbase for thread_area pointer.

TODO:
Currently, gdb is not adapted to show segment registers from struct reg.
Also, no machine-depended ptrace command is added to set segment
registers for debugged process.

In collaboration with: pho
Discussed with: peter
Reviewed by: jhb
Linuxolator tested by: dchagin

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# 1829d5da 12-Mar-2009 Warner Losh <imp@FreeBSD.org>

Update the projects tree to a newer FreeBSD current.


# 12678024 11-Mar-2009 Doug Rabson <dfr@FreeBSD.org>

Merge in support for Xen HVM on amd64 architecture.


Revision tags: release/7.1.0_cvs, release/7.1.0, release/6.4.0_cvs, release/6.4.0
# 3bd5e467 08-Sep-2008 Konstantin Belousov <kib@FreeBSD.org>

The pcb_gs32p should be per-cpu, not per-thread pointer. This is
location in GDT where the segment descriptor from pcb_gs32sd is
copied, and the location is in GDT local to CPU.

Noted and reviewed b

The pcb_gs32p should be per-cpu, not per-thread pointer. This is
location in GDT where the segment descriptor from pcb_gs32sd is
copied, and the location is in GDT local to CPU.

Noted and reviewed by: peter
MFC after: 1 week

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# 70d12a18 19-Aug-2008 John Baldwin <jhb@FreeBSD.org>

Export 'struct pcpu' to userland w/o requiring _KERNEL. A few ports
already define _KERNEL to get to this and I'm about to add hooks to
libkvm to access per-CPU data.

MFC after: 1 week


# 6c47aaae 25-Apr-2008 Jeff Roberson <jeff@FreeBSD.org>

- Add an integer argument to idle to indicate how likely we are to wake
from idle over the next tick.
- Add a new MD routine, cpu_wake_idle() to wakeup idle threads who are
suspended in cpu sp

- Add an integer argument to idle to indicate how likely we are to wake
from idle over the next tick.
- Add a new MD routine, cpu_wake_idle() to wakeup idle threads who are
suspended in cpu specific states. This function can fail and cause the
scheduler to fall back to another mechanism (ipi).
- Implement support for mwait in cpu_idle() on i386/amd64 machines that
support it. mwait is a higher performance way to synchronize cpus
as compared to hlt & ipis.
- Allow selecting the idle routine by name via sysctl machdep.idle. This
replaces machdep.cpu_idle_hlt. Only idle routines supported by the
current machine are permitted.

Sponsored by: Nokia

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Revision tags: release/7.0.0_cvs, release/7.0.0, release/6.3.0_cvs, release/6.3.0
# 67596082 04-Jun-2007 Attilio Rao <attilio@FreeBSD.org>

Rework the PCPU_* (MD) interface:
- Rename PCPU_LAZY_INC into PCPU_INC
- Add the PCPU_ADD interface which just does an add on the pcpu member
given a specific value.

Note that for most architectur

Rework the PCPU_* (MD) interface:
- Rename PCPU_LAZY_INC into PCPU_INC
- Add the PCPU_ADD interface which just does an add on the pcpu member
given a specific value.

Note that for most architectures PCPU_INC and PCPU_ADD are not safe.
This is a point that needs some discussions/work in the next days.

Reviewed by: alc, bde
Approved by: jeff (mentor)

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# c640357f 11-Mar-2007 Alan Cox <alc@FreeBSD.org>

Push down the implementation of PCPU_LAZY_INC() into the machine-dependent
header file. Reimplement PCPU_LAZY_INC() on amd64 and i386 making it
atomic with respect to interrupts.

Reviewed by: bde,

Push down the implementation of PCPU_LAZY_INC() into the machine-dependent
header file. Reimplement PCPU_LAZY_INC() on amd64 and i386 making it
atomic with respect to interrupts.

Reviewed by: bde, jhb

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# 1300fd67 06-Feb-2007 Bruce Evans <bde@FreeBSD.org>

Fixed some style bugs. Routine except:
- don't use __GNUCLIKE___OFFSETOF, since __offsetof() is a standard
FreeBSD implementaion detail which has nothing to do with GNUC.


# 3764a823 06-Feb-2007 Bruce Evans <bde@FreeBSD.org>

Simplified PCPU_GET() and PCPU_SET(). We must copy through a temporary
variable to avoid invalid constraints in dead code. Use an array of
u_char's (inside a struct) instead of a char/short/int/lon

Simplified PCPU_GET() and PCPU_SET(). We must copy through a temporary
variable to avoid invalid constraints in dead code. Use an array of
u_char's (inside a struct) instead of a char/short/int/long variable so
that the variable and its accesses can be spelled in the same way in all
cases and code doesn't need to be cloned just to hold the spelling
differences.

Fixed strict-aliasing errors in PCPU_SET() and in the amd64 PCPU_GET().
Cast to (void *) as in rev.1.37 of the i386 version where the errors
were fixed for the i386 PCPU_GET() only. It would be more correct to
copy to and from the temp. variable using memcpy(), but then an
ifdef tangle would be required to ensure using the builtin memcpy().
We depend on fairly aggressive optimization to put the temp. variable
only in a register despite it being copied using
*(type *)(void *)&anothertype and could depend on this when using
memcpy() too. This seems to work right even for -O0, but the -O0 case
has not been completely tested.

This change gives identical object code for all object files in LINT
on amd64 (except for one file with a __TIME__ stamp). For LINT on
i386 it gives unimportant differences in instruction order and padding
in a few object files. This was only tested for -O.

This change (actually a previous version of it) gives the following
reductions in the number of object files in LINT that fail to compile
with -O2 but without the -fno-strict-aliasing kludge:
- amd64: 29 (down from 211)
- i386: 36 (down from 47)

gcc-3.4.6 actually allows the invalid constraints that result from not
using the temp. variable, at least with -O[1-2], but gcc-3.3.3 crashes
on them and I don't want to depend on compiler bugs.

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Revision tags: release/6.2.0_cvs, release/6.2.0, release/5.5.0_cvs, release/5.5.0, release/6.1.0_cvs, release/6.1.0, release/6.0.0_cvs, release/6.0.0, release/5.4.0_cvs, release/5.4.0
# cf4e1c46 11-Mar-2005 Peter Wemm <peter@FreeBSD.org>

Remove diffs to i386 version that came in via the compiler support ifdefs.
This changes things like whitespace, inconsistent use of #ifndef vs
#if !defined(), different macro argument orders, mismatc

Remove diffs to i386 version that came in via the compiler support ifdefs.
This changes things like whitespace, inconsistent use of #ifndef vs
#if !defined(), different macro argument orders, mismatched comments, etc.

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# a5f50ef9 02-Mar-2005 Joerg Wunsch <joerg@FreeBSD.org>

netchild's mega-patch to isolate compiler dependencies into a central
place.

This moves the dependency on GCC's and other compiler's features into
the central sys/cdefs.h file, while the individual

netchild's mega-patch to isolate compiler dependencies into a central
place.

This moves the dependency on GCC's and other compiler's features into
the central sys/cdefs.h file, while the individual source files can
then refer to #ifdef __COMPILER_FEATURE_FOO where they by now used to
refer to #if __GNUC__ > 3.1415 && __BARC__ <= 42.

By now, GCC and ICC (the Intel compiler) have been actively tested on
IA32 platforms by netchild. Extension to other compilers is supposed
to be possible, of course.

Submitted by: netchild
Reviewed by: various developers on arch@, some time ago

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Revision tags: release/4.11.0_cvs, release/4.11.0, release/5.3.0_cvs, release/5.3.0, release/4.10.0_cvs, release/4.10.0, release/5.2.1_cvs, release/5.2.1, release/5.2.0_cvs, release/5.2.0
# b4bae2b0 21-Nov-2003 Peter Wemm <peter@FreeBSD.org>

Argh! Followup to previous commit. I checked in the patch with an
unintended local change. Change Xurthread back to curthread.


# 5dd88383 20-Nov-2003 Peter Wemm <peter@FreeBSD.org>

Provide a streamlined '#define curthread __curthread()' for amd64 to avoid
the compiler having to parse and optimize the PCPU_GET(curthread) so often.
__curthread() is an inline optimized version of

Provide a streamlined '#define curthread __curthread()' for amd64 to avoid
the compiler having to parse and optimize the PCPU_GET(curthread) so often.
__curthread() is an inline optimized version of PCPU_GET(curthread) that
knows that pc_curthread is at offset zero in the pcpu struct. Add a
CTASSERT() to catch any possible changes to this. This accounts for
just over a 1% wall clock speedup for total kernel compile/link time,
and 20% compile time speedup on some specific files depending on which
compile options are used.

Approved by: re (jhb)

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# 0d2a2989 17-Nov-2003 Peter Wemm <peter@FreeBSD.org>

Initial landing of SMP support for FreeBSD/amd64.

- This is heavily derived from John Baldwin's apic/pci cleanup on i386.
- I have completely rewritten or drastically cleaned up some other parts.

Initial landing of SMP support for FreeBSD/amd64.

- This is heavily derived from John Baldwin's apic/pci cleanup on i386.
- I have completely rewritten or drastically cleaned up some other parts.
(in particular, bootstrap)
- This is still a WIP. It seems that there are some highly bogus bioses
on nVidia nForce3-150 boards. I can't stress how broken these boards
are. I have a workaround in mind, but right now the Asus SK8N is broken.
The Gigabyte K8NPro (nVidia based) is also mind-numbingly hosed.
- Most of my testing has been with SCHED_ULE. SCHED_4BSD works.
- the apic and acpi components are 'standard'.
- If you have an nVidia nForce3-150 board, you are stuck with 'device
atpic' in addition, because they somehow managed to forget to connect the
8254 timer to the apic, even though its in the same silicon! ARGH!
This directly violates the ACPI spec.

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# 6a0d1abc 17-Nov-2003 Bruce Evans <bde@FreeBSD.org>

Fixed pedantic warnings for statement-expressions using __extension__
and by not using a statement-expression for the non-expression
__PCPU_SET().


# 81bbee59 17-Nov-2003 Bruce Evans <bde@FreeBSD.org>

Fixed a pedantic syntax error (a stray semicolon at the end of
PCPU_MD_FIELDS).


# b72e9cf5 15-Nov-2003 Nate Lawson <njl@FreeBSD.org>

Add the pc_acpi_id PCPU member. The new acpi_cpu driver uses this to
dereference the softc.


Revision tags: release/4.9.0_cvs, release/4.9.0, release/5.1.0_cvs, release/5.1.0
# afa88623 01-May-2003 Peter Wemm <peter@FreeBSD.org>

Commit MD parts of a loosely functional AMD64 port. This is based on
a heavily stripped down FreeBSD/i386 (brutally stripped down actually) to
attempt to get a stable base to start from. There is a

Commit MD parts of a loosely functional AMD64 port. This is based on
a heavily stripped down FreeBSD/i386 (brutally stripped down actually) to
attempt to get a stable base to start from. There is a lot missing still.
Worth noting:
- The kernel runs at 1GB in order to cheat with the pmap code. pmap uses
a variation of the PAE code in order to avoid having to worry about 4
levels of page tables yet.
- It boots in 64 bit "long mode" with a tiny trampoline embedded in the
i386 loader. This simplifies locore.s greatly.
- There are still quite a few fragments of i386-specific code that have
not been translated yet, and some that I cheated and wrote dumb C
versions of (bcopy etc).
- It has both int 0x80 for syscalls (but using registers for argument
passing, as is native on the amd64 ABI), and the 'syscall' instruction
for syscalls. int 0x80 preserves all registers, 'syscall' does not.
- I have tried to minimize looking at the NetBSD code, except in a couple
of places (eg: to find which register they use to replace the trashed
%rcx register in the syscall instruction). As a result, there is not a
lot of similarity. I did look at NetBSD a few times while debugging to
get some ideas about what I might have done wrong in my first attempt.

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Revision tags: release/4.8.0_cvs, release/4.8.0, release/5.0.0_cvs, release/5.0.0, release/4.7.0_cvs
# 7e9bac35 01-Oct-2002 Poul-Henning Kamp <phk@FreeBSD.org>

A more lint friendly #ifdef lint section.


Revision tags: release/4.6.2_cvs, release/4.6.2, release/4.6.1
# 80a0ead4 15-Jul-2002 Mark Murray <markm@FreeBSD.org>

Wrap GNU specific code in ifdefs, and help lint out by providing
some alternative definitions.


Revision tags: release/4.6.0_cvs
# d74ac681 27-Mar-2002 Matthew Dillon <dillon@FreeBSD.org>

Compromise for critical*()/cpu_critical*() recommit. Cleanup the interrupt
disablement assumptions in kern_fork.c by adding another API call,
cpu_critical_fork_exit(). Cleanup the td_savecrit field

Compromise for critical*()/cpu_critical*() recommit. Cleanup the interrupt
disablement assumptions in kern_fork.c by adding another API call,
cpu_critical_fork_exit(). Cleanup the td_savecrit field by moving it
from MI to MD. Temporarily move cpu_critical*() from <arch>/include/cpufunc.h
to <arch>/<arch>/critical.c (stage-2 will clean this up).

Implement interrupt deferral for i386 that allows interrupts to remain
enabled inside critical sections. This also fixes an IPI interlock bug,
and requires uses of icu_lock to be enclosed in a true interrupt disablement.

This is the stage-1 commit. Stage-2 will occur after stage-1 has stabilized,
and will move cpu_critical*() into its own header file(s) + other things.
This commit may break non-i386 architectures in trivial ways. This should
be temporary.

Reviewed by: core
Approved by: core

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Revision tags: release/4.5.0_cvs, release/4.4.0_cvs
# 0bbc8826 12-Dec-2001 John Baldwin <jhb@FreeBSD.org>

Overhaul the per-CPU support a bit:

- The MI portions of struct globaldata have been consolidated into a MI
struct pcpu. The MD per-CPU data are specified via a macro defined in
machine/pcpu.h.

Overhaul the per-CPU support a bit:

- The MI portions of struct globaldata have been consolidated into a MI
struct pcpu. The MD per-CPU data are specified via a macro defined in
machine/pcpu.h. A macro was chosen over a struct mdpcpu so that the
interface would be cleaner (PCPU_GET(my_md_field) vs.
PCPU_GET(md.md_my_md_field)).
- All references to globaldata are changed to pcpu instead. In a UP kernel,
this data was stored as global variables which is where the original name
came from. In an SMP world this data is per-CPU and ideally private to each
CPU outside of the context of debuggers. This also included combining
machine/globaldata.h and machine/globals.h into machine/pcpu.h.
- The pointer to the thread using the FPU on i386 was renamed from
npxthread to fpcurthread to be identical with other architectures.
- Make the show pcpu ddb command MI with a MD callout to display MD
fields.
- The globaldata_register() function was renamed to pcpu_init() and now
init's MI fields of a struct pcpu in addition to registering it with
the internal array and list.
- A pcpu_destroy() function was added to remove a struct pcpu from the
internal array and list.

Tested on: alpha, i386
Reviewed by: peter, jake

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# fd54558a 18-Sep-2001 John Baldwin <jhb@FreeBSD.org>

- If we ever do the per-cpu KTR stuff, the index won't be volatile as it
will be private to each CPU.
- Re-style(9) the globaldata structures. There really needs to be a MI
struct pcpu that has

- If we ever do the per-cpu KTR stuff, the index won't be volatile as it
will be private to each CPU.
- Re-style(9) the globaldata structures. There really needs to be a MI
struct pcpu that has a MD struct mdpcpu member at some point.

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