kernel_optimize_test/include/asm-sparc
Ingo Molnar fb1c8f93d8 [PATCH] spinlock consolidation
This patch (written by me and also containing many suggestions of Arjan van
de Ven) does a major cleanup of the spinlock code.  It does the following
things:

 - consolidates and enhances the spinlock/rwlock debugging code

 - simplifies the asm/spinlock.h files

 - encapsulates the raw spinlock type and moves generic spinlock
   features (such as ->break_lock) into the generic code.

 - cleans up the spinlock code hierarchy to get rid of the spaghetti.

Most notably there's now only a single variant of the debugging code,
located in lib/spinlock_debug.c.  (previously we had one SMP debugging
variant per architecture, plus a separate generic one for UP builds)

Also, i've enhanced the rwlock debugging facility, it will now track
write-owners.  There is new spinlock-owner/CPU-tracking on SMP builds too.
All locks have lockup detection now, which will work for both soft and hard
spin/rwlock lockups.

The arch-level include files now only contain the minimally necessary
subset of the spinlock code - all the rest that can be generalized now
lives in the generic headers:

 include/asm-i386/spinlock_types.h       |   16
 include/asm-x86_64/spinlock_types.h     |   16

I have also split up the various spinlock variants into separate files,
making it easier to see which does what. The new layout is:

   SMP                         |  UP
   ----------------------------|-----------------------------------
   asm/spinlock_types_smp.h    |  linux/spinlock_types_up.h
   linux/spinlock_types.h      |  linux/spinlock_types.h
   asm/spinlock_smp.h          |  linux/spinlock_up.h
   linux/spinlock_api_smp.h    |  linux/spinlock_api_up.h
   linux/spinlock.h            |  linux/spinlock.h

/*
 * here's the role of the various spinlock/rwlock related include files:
 *
 * on SMP builds:
 *
 *  asm/spinlock_types.h: contains the raw_spinlock_t/raw_rwlock_t and the
 *                        initializers
 *
 *  linux/spinlock_types.h:
 *                        defines the generic type and initializers
 *
 *  asm/spinlock.h:       contains the __raw_spin_*()/etc. lowlevel
 *                        implementations, mostly inline assembly code
 *
 *   (also included on UP-debug builds:)
 *
 *  linux/spinlock_api_smp.h:
 *                        contains the prototypes for the _spin_*() APIs.
 *
 *  linux/spinlock.h:     builds the final spin_*() APIs.
 *
 * on UP builds:
 *
 *  linux/spinlock_type_up.h:
 *                        contains the generic, simplified UP spinlock type.
 *                        (which is an empty structure on non-debug builds)
 *
 *  linux/spinlock_types.h:
 *                        defines the generic type and initializers
 *
 *  linux/spinlock_up.h:
 *                        contains the __raw_spin_*()/etc. version of UP
 *                        builds. (which are NOPs on non-debug, non-preempt
 *                        builds)
 *
 *   (included on UP-non-debug builds:)
 *
 *  linux/spinlock_api_up.h:
 *                        builds the _spin_*() APIs.
 *
 *  linux/spinlock.h:     builds the final spin_*() APIs.
 */

All SMP and UP architectures are converted by this patch.

arm, i386, ia64, ppc, ppc64, s390/s390x, x64 was build-tested via
crosscompilers.  m32r, mips, sh, sparc, have not been tested yet, but should
be mostly fine.

From: Grant Grundler <grundler@parisc-linux.org>

  Booted and lightly tested on a500-44 (64-bit, SMP kernel, dual CPU).
  Builds 32-bit SMP kernel (not booted or tested).  I did not try to build
  non-SMP kernels.  That should be trivial to fix up later if necessary.

  I converted bit ops atomic_hash lock to raw_spinlock_t.  Doing so avoids
  some ugly nesting of linux/*.h and asm/*.h files.  Those particular locks
  are well tested and contained entirely inside arch specific code.  I do NOT
  expect any new issues to arise with them.

 If someone does ever need to use debug/metrics with them, then they will
  need to unravel this hairball between spinlocks, atomic ops, and bit ops
  that exist only because parisc has exactly one atomic instruction: LDCW
  (load and clear word).

From: "Luck, Tony" <tony.luck@intel.com>

   ia64 fix

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjanv@infradead.org>
Signed-off-by: Grant Grundler <grundler@parisc-linux.org>
Cc: Matthew Wilcox <willy@debian.org>
Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
Signed-off-by: Mikael Pettersson <mikpe@csd.uu.se>
Signed-off-by: Benoit Boissinot <benoit.boissinot@ens-lyon.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-10 10:06:21 -07:00
..
a.out.h
apc.h
asi.h
asmmacro.h
atomic.h
audioio.h
auxio.h
auxvec.h [PATCH] auxiliary vector cleanups 2005-09-07 16:57:21 -07:00
bitext.h
bitops.h
bpp.h
bsderrno.h
btfixup.h
bug.h
bugs.h
byteorder.h
cache.h
cacheflush.h
checksum.h
clock.h
contregs.h
cpudata.h
cputime.h
current.h
cypress.h
delay.h
div64.h
dma-mapping.h
dma.h
ebus.h
ecc.h
eeprom.h
elf.h
emergency-restart.h [PATCH] Add emergency_restart() 2005-07-26 14:35:41 -07:00
errno.h
fbio.h
fcntl.h [PATCH] Clean up struct flock64 definitions 2005-09-07 16:57:38 -07:00
fixmap.h
floppy.h
futex.h [PATCH] FUTEX_WAKE_OP: pthread_cond_signal() speedup 2005-09-07 16:57:17 -07:00
hardirq.h
head.h
highmem.h
hw_irq.h
ide.h
idprom.h
io-unit.h
io.h
ioctl.h
ioctls.h
iommu.h
ipc.h
ipcbuf.h
irq.h
jsflash.h
kbio.h
kdebug.h
kgdb.h
kmap_types.h
linkage.h
local.h
machines.h
mbus.h
mc146818rtc.h
memreg.h
mman.h
mmu_context.h
mmu.h
module.h
mostek.h
mpmbox.h
msgbuf.h
msi.h
mxcc.h
namei.h
obio.h
openprom.h
openpromio.h
oplib.h
page.h [PATCH] mm: consolidate get_order 2005-09-05 00:05:39 -07:00
param.h
pbm.h
pci.h [ACPI] merge acpi-2.6.12 branch into latest Linux 2.6.13-rc... 2005-07-12 17:21:56 -04:00
pcic.h
pconf.h
percpu.h
perfctr.h
pgalloc.h
pgtable.h [SPARC]: Kill io_remap_page_range() 2005-09-01 21:51:26 -07:00
pgtsrmmu.h
pgtsun4.h
pgtsun4c.h
poll.h
posix_types.h
processor.h [SPARC]: remove use of asm/segment.h 2005-08-29 12:45:44 -07:00
psr.h
ptrace.h kbuild: arm26,sparc use generic asm-offset support 2005-09-09 20:35:55 +02:00
reg.h
resource.h
ross.h
rtc.h
sbi.h
sbus.h
scatterlist.h
sections.h
semaphore.h
sembuf.h
setup.h
sfp-machine.h
shmbuf.h
shmparam.h
sigcontext.h
siginfo.h
signal.h
smp.h
smpprim.h
socket.h [NET]: Introduce SO_{SND,RCV}BUFFORCE socket options 2005-08-29 15:31:35 -07:00
sockios.h
solerrno.h
spinlock_types.h [PATCH] spinlock consolidation 2005-09-10 10:06:21 -07:00
spinlock.h [PATCH] spinlock consolidation 2005-09-10 10:06:21 -07:00
stat.h
statfs.h
string.h
sun4paddr.h
sun4prom.h
sunbpp.h
svr4.h
swift.h
sysen.h
system.h [SPARC]: remove use of asm/segment.h 2005-08-29 12:45:44 -07:00
termbits.h
termios.h
thread_info.h
timer.h
timex.h
tlb.h
tlbflush.h
topology.h
traps.h
tsunami.h
turbosparc.h
types.h [PATCH] sab: consolidate kmem_bufctl_t 2005-09-05 00:05:48 -07:00
uaccess.h [PATCH] remove verify_area(): remove verify_area() from various uaccess.h headers 2005-09-07 16:57:35 -07:00
unaligned.h
unistd.h [SPARC]: Add inotify syscall entries. 2005-07-27 14:14:39 -07:00
user.h
vac-ops.h
vaddrs.h
vfc_ioctls.h
viking.h
vuid_event.h
winmacro.h
xor.h