freebsd-dev/sys/amd64/include
John Baldwin e0f66ef861 Reorganize the interrupt handling code a bit to make a few things cleaner
and increase flexibility to allow various different approaches to be tried
in the future.
- Split struct ithd up into two pieces.  struct intr_event holds the list
  of interrupt handlers associated with interrupt sources.
  struct intr_thread contains the data relative to an interrupt thread.
  Currently we still provide a 1:1 relationship of events to threads
  with the exception that events only have an associated thread if there
  is at least one threaded interrupt handler attached to the event.  This
  means that on x86 we no longer have 4 bazillion interrupt threads with
  no handlers.  It also means that interrupt events with only INTR_FAST
  handlers no longer have an associated thread either.
- Renamed struct intrhand to struct intr_handler to follow the struct
  intr_foo naming convention.  This did require renaming the powerpc
  MD struct intr_handler to struct ppc_intr_handler.
- INTR_FAST no longer implies INTR_EXCL on all architectures except for
  powerpc.  This means that multiple INTR_FAST handlers can attach to the
  same interrupt and that INTR_FAST and non-INTR_FAST handlers can attach
  to the same interrupt.  Sharing INTR_FAST handlers may not always be
  desirable, but having sio(4) and uhci(4) fight over an IRQ isn't fun
  either.  Drivers can always still use INTR_EXCL to ask for an interrupt
  exclusively.  The way this sharing works is that when an interrupt
  comes in, all the INTR_FAST handlers are executed first, and if any
  threaded handlers exist, the interrupt thread is scheduled afterwards.
  This type of layout also makes it possible to investigate using interrupt
  filters ala OS X where the filter determines whether or not its companion
  threaded handler should run.
- Aside from the INTR_FAST changes above, the impact on MD interrupt code
  is mostly just 's/ithread/intr_event/'.
- A new MI ddb command 'show intrs' walks the list of interrupt events
  dumping their state.  It also has a '/v' verbose switch which dumps
  info about all of the handlers attached to each event.
- We currently don't destroy an interrupt thread when the last threaded
  handler is removed because it would suck for things like ppbus(8)'s
  braindead behavior.  The code is present, though, it is just under
  #if 0 for now.
- Move the code to actually execute the threaded handlers for an interrrupt
  event into a separate function so that ithread_loop() becomes more
  readable.  Previously this code was all in the middle of ithread_loop()
  and indented halfway across the screen.
- Made struct intr_thread private to kern_intr.c and replaced td_ithd
  with a thread private flag TDP_ITHREAD.
- In statclock, check curthread against idlethread directly rather than
  curthread's proc against idlethread's proc. (Not really related to intr
  changes)

Tested on:	alpha, amd64, i386, sparc64
Tested on:	arm, ia64 (older version of patch by cognet and marcel)
2005-10-25 19:48:48 +00:00
..
pc Make the facility for recognizing BIOS-signatures more general 2005-07-21 09:48:37 +00:00
_bus.h Break out the definition of bus_space_{tag,handle}_t and a few other types 2005-04-18 21:45:34 +00:00
_inttypes.h
_limits.h Move MINSIGSTKSZ from <machine/signal.h> to <machine/_limits.h> and rename 2005-08-20 16:44:41 +00:00
_stdint.h <stdint.h> should define WINT_M{AX,IN} independent from whether WCHAR_MIN is 2004-05-18 16:04:57 +00:00
_types.h Check the alignment of the IP header before passing the packet up to the 2005-07-02 23:13:31 +00:00
acpica_machdep.h Move the code for halting the CPU (acpi_cpu_c1) into machdep files. 2004-10-11 05:39:15 +00:00
apicreg.h JumboMFi386: use bitmapped IPI handler. Update elcr and default mptable 2005-01-21 06:01:20 +00:00
apicvar.h Add IPI support for preempting a thread on another CPU. 2005-06-09 18:23:54 +00:00
asm.h Align the entry point to assembly language functions to a 16-byte boundary. 2005-04-10 20:49:21 +00:00
asmacros.h Remove advertising clause from University of California Regent's license, 2004-04-05 21:29:41 +00:00
atomic.h Add a new atomic_fetchadd() primitive that atomically adds a value to a 2005-09-27 17:39:11 +00:00
bus_dma.h Fix $FreeBSD$. 2005-07-22 04:03:25 +00:00
bus.h Remove bus_{mem,p}io.h and related code for a micro-optimization on i386 2005-05-29 04:42:30 +00:00
clock.h Begin all license/copyright comments with /*- 2005-01-05 20:17:21 +00:00
cpu.h Instead of calling ia32_pause() conditionally on __i386__ or __amd64__ 2004-08-03 18:44:27 +00:00
cpufunc.h Add a knob for disabling/enabling HTT, "machdep.hyperthreading_allowed". 2005-05-13 00:10:56 +00:00
cputypes.h Begin all license/copyright comments with /*- 2005-01-05 20:17:21 +00:00
db_machdep.h Begin all license/copyright comments with /*- 2005-01-05 20:17:21 +00:00
elf.h Add style(9) foolishness. 2004-08-03 08:21:48 +00:00
endian.h Match i386 rev 1.38 with __cplusplus support 2005-03-11 21:46:01 +00:00
exec.h Use a common multi-inclusion protection, and add such a 2005-02-19 21:16:48 +00:00
float.h Begin all license/copyright comments with /*- 2005-01-05 20:17:21 +00:00
floatingpoint.h The file machine/ieeefp.h needs sys/cdefs.h on amd64 and i386 after my 2005-04-02 17:31:42 +00:00
fpu.h Remove advertising clause from University of California Regent's license, 2004-04-05 21:29:41 +00:00
frame.h Remove obsolete prototype of kdb_trap(). 2004-07-10 22:39:56 +00:00
gdb_machdep.h Begin all license/copyright comments with /*- 2005-01-05 20:17:21 +00:00
ieeefp.h The memory operands to fldcw and ldmxcsr are inputs, not outputs. 2005-04-12 23:12:00 +00:00
in_cksum.h Remove diffs to i386 version that came in via the compiler support ifdefs. 2005-03-11 22:16:09 +00:00
intr_machdep.h Reorganize the interrupt handling code a bit to make a few things cleaner 2005-10-25 19:48:48 +00:00
iodev.h Break out the MI part of the /dev/[k]mem and /dev/io drivers into 2004-08-01 11:40:54 +00:00
kdb.h Begin all license/copyright comments with /*- 2005-01-05 20:17:21 +00:00
legacyvar.h MFi386: pci attribute allocation fixes. 2005-09-18 01:42:43 +00:00
limits.h netchild's mega-patch to isolate compiler dependencies into a central 2005-03-02 21:33:29 +00:00
md_var.h - Print number of physical/logical cores and more CPUID info. 2005-10-14 22:52:01 +00:00
memdev.h Break out the MI part of the /dev/[k]mem and /dev/io drivers into 2004-08-01 11:40:54 +00:00
metadata.h Begin all license/copyright comments with /*- 2005-01-05 20:17:21 +00:00
mp_watchdog.h Add an "options MP_WATCHDOG" to i386. This option allows one of the 2004-08-15 18:02:09 +00:00
mptable.h Begin all license/copyright comments with /*- 2005-01-05 20:17:21 +00:00
mutex.h Kill the ASM versions of the mtx_lock_spin and friends. They were never 2003-12-06 23:17:18 +00:00
param.h Increase MAXCPU to 16 in SMP kernels so that APIC IDs from 0 to 15 are 2005-06-29 15:13:25 +00:00
pcb_ext.h
pcb.h I believe the stack underflows during early development that caused me to 2005-09-27 21:11:35 +00:00
pci_cfgreg.h Begin all license/copyright comments with /*- 2005-01-05 20:17:21 +00:00
pcpu.h Remove diffs to i386 version that came in via the compiler support ifdefs. 2005-03-11 22:16:09 +00:00
pmap.h Switch AMD64 and i386 platforms to using ELF as their kernel crash 2005-06-29 22:28:46 +00:00
pmc_mdep.h MFP4: 2005-06-09 19:45:09 +00:00
ppireg.h - Move timerreg.h to <arch>/include and split i8253 specific defines into 2005-05-14 09:10:02 +00:00
proc.h Divorce critical sections from spinlocks. Critical sections as denoted by 2005-04-04 21:53:56 +00:00
profile.h Remove diffs to i386 version that came in via the compiler support ifdefs. 2005-03-11 22:16:09 +00:00
psl.h Remove advertising clause from University of California Regent's license, 2004-04-05 21:29:41 +00:00
ptrace.h Begin all license/copyright comments with /*- 2005-01-05 20:17:21 +00:00
reg.h Remove advertising clause from University of California Regent's license, 2004-04-05 23:55:14 +00:00
reloc.h Remove advertising clause from University of California Regent's license, 2004-04-05 21:29:41 +00:00
resource.h Begin all license/copyright comments with /*- 2005-01-05 20:17:21 +00:00
runq.h Begin all license/copyright comments with /*- 2005-01-05 20:17:21 +00:00
segments.h Remove advertising clause from University of California Regent's license, 2004-04-05 21:29:41 +00:00
setjmp.h
sf_buf.h MFi386: Update alc's copyright notice 2005-02-28 23:38:15 +00:00
sigframe.h
signal.h Move MINSIGSTKSZ from <machine/signal.h> to <machine/_limits.h> and rename 2005-08-20 16:44:41 +00:00
smp.h Rename the KDB_STOP_NMI kernel option to STOP_NMI and make it apply to all 2005-10-24 21:04:19 +00:00
specialreg.h Correct few MSR addresses. 2005-10-15 00:44:56 +00:00
stdarg.h Remove diffs to i386 version that came in via the compiler support ifdefs. 2005-03-11 22:16:09 +00:00
sysarch.h Implement 32-bit compatable fsbase/gsbase methods so that we can run 2005-04-14 16:57:58 +00:00
timerreg.h Change the spkr_set_pitch() function to a macro to fix low level profiling. 2005-05-28 13:40:27 +00:00
trap.h Remove advertising clause from University of California Regent's license, 2004-04-05 21:29:41 +00:00
tss.h Show that I can actually count. 2005-04-15 18:39:31 +00:00
ucontext.h Update the graffiti. 2003-11-08 04:39:22 +00:00
varargs.h Remove diffs to i386 version that came in via the compiler support ifdefs. 2005-03-11 22:16:09 +00:00
vmparam.h Raise MAXDSIZ from 8G to 32G. The old limit was just an arbitary choice 2004-10-27 17:21:15 +00:00