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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>		20 years ago
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a.out.h	Linux-2.6.12-rc2	20 years ago
agp.h	[PATCH] AGP fix for Xen VMM	20 years ago
apb.h	Linux-2.6.12-rc2	20 years ago
asi.h	Linux-2.6.12-rc2	20 years ago
atomic.h	[SPARC64]: More fully work around Spitfire Errata 51.	20 years ago
audioio.h	Linux-2.6.12-rc2	20 years ago
auxio.h	[SPARC64]: Get rid of fast IRQ feature.	20 years ago
auxvec.h	[PATCH] auxiliary vector cleanups	20 years ago
bbc.h	Linux-2.6.12-rc2	20 years ago
bitops.h	[SPARC64]: More fully work around Spitfire Errata 51.	20 years ago
bpp.h	Linux-2.6.12-rc2	20 years ago
bsderrno.h	Linux-2.6.12-rc2	20 years ago
bug.h	[PATCH] remove all kernel BUGs	20 years ago
bugs.h	Linux-2.6.12-rc2	20 years ago
byteorder.h	Linux-2.6.12-rc2	20 years ago
cache.h	Linux-2.6.12-rc2	20 years ago
cacheflush.h	[PATCH] sparc64: Reduce ptrace cache flushing	20 years ago
chafsr.h	Linux-2.6.12-rc2	20 years ago
checksum.h	Linux-2.6.12-rc2	20 years ago
chmctrl.h	Linux-2.6.12-rc2	20 years ago
cmt.h	Linux-2.6.12-rc2	20 years ago
compat.h	[PATCH] compat: be more consistent about [ug]id_t	20 years ago
const.h	Linux-2.6.12-rc2	20 years ago
cpudata.h	[SPARC64]: Eliminate irq_cpustat_t.	20 years ago
cputime.h	Linux-2.6.12-rc2	20 years ago
current.h	Linux-2.6.12-rc2	20 years ago
dcr.h	Linux-2.6.12-rc2	20 years ago
dcu.h	Linux-2.6.12-rc2	20 years ago
delay.h	Linux-2.6.12-rc2	20 years ago
display7seg.h	Linux-2.6.12-rc2	20 years ago
div64.h	Linux-2.6.12-rc2	20 years ago
dma-mapping.h	Linux-2.6.12-rc2	20 years ago
dma.h	Linux-2.6.12-rc2	20 years ago
ebus.h	Linux-2.6.12-rc2	20 years ago
elf.h	Linux-2.6.12-rc2	20 years ago
emergency-restart.h	[PATCH] Add emergency_restart()	20 years ago
envctrl.h	Linux-2.6.12-rc2	20 years ago
errno.h	[PATCH] add EOWNERDEAD and ENOTRECOVERABLE version 2	20 years ago
estate.h	Linux-2.6.12-rc2	20 years ago
fbio.h	Linux-2.6.12-rc2	20 years ago
fcntl.h	[PATCH] Clean up struct flock definitions	20 years ago
fhc.h	Linux-2.6.12-rc2	20 years ago
floppy.h	[SPARC64]: Get rid of fast IRQ feature.	20 years ago
fpumacro.h	Linux-2.6.12-rc2	20 years ago
futex.h	[PATCH] FUTEX_WAKE_OP: pthread_cond_signal() speedup	20 years ago
hardirq.h	[SPARC64]: Eliminate irq_cpustat_t.	20 years ago
head.h	Linux-2.6.12-rc2	20 years ago
hw_irq.h	Linux-2.6.12-rc2	20 years ago
ide.h	Linux-2.6.12-rc2	20 years ago
idprom.h	Linux-2.6.12-rc2	20 years ago
io.h	[SPARC64]: Use 'unsigned long' for port argument to I/O string ops.	20 years ago
ioctl.h	Linux-2.6.12-rc2	20 years ago
ioctls.h	Linux-2.6.12-rc2	20 years ago
iommu.h	[SPARC64]: Fix streaming buffer flushing on PCI and SBUS.	20 years ago
ipc.h	Linux-2.6.12-rc2	20 years ago
ipcbuf.h	Linux-2.6.12-rc2	20 years ago
irq.h	[SPARC64]: Add support for IRQ pre-handlers.	20 years ago
isa.h	Linux-2.6.12-rc2	20 years ago
kbio.h	Linux-2.6.12-rc2	20 years ago
kdebug.h	[PATCH] RCU: clean up a few remaining synchronize_kernel() calls	20 years ago
kmap_types.h	Linux-2.6.12-rc2	20 years ago
kprobes.h	Linux-2.6.12-rc2	20 years ago
linkage.h	Linux-2.6.12-rc2	20 years ago
local.h	Linux-2.6.12-rc2	20 years ago
lsu.h	Linux-2.6.12-rc2	20 years ago
mc146818rtc.h	Linux-2.6.12-rc2	20 years ago
mman.h	Linux-2.6.12-rc2	20 years ago
mmu.h	Linux-2.6.12-rc2	20 years ago
mmu_context.h	Linux-2.6.12-rc2	20 years ago
module.h	Linux-2.6.12-rc2	20 years ago
mostek.h	[PATCH] mostek bogus sparse annotations fixed	20 years ago
msgbuf.h	Linux-2.6.12-rc2	20 years ago
namei.h	Linux-2.6.12-rc2	20 years ago
ns87303.h	Linux-2.6.12-rc2	20 years ago
openprom.h	Linux-2.6.12-rc2	20 years ago
openpromio.h	Linux-2.6.12-rc2	20 years ago
oplib.h	Linux-2.6.12-rc2	20 years ago
page.h	[PATCH] mm: consolidate get_order	20 years ago
param.h	[SPARC64]: Support CONFIG_HZ	20 years ago
parport.h	[SPARC64]: Fix enable_dma() in asm-sparc64/parport.h	20 years ago
pbm.h	[SPARC64]: Do proper DMA IRQ syncing on Tomatillo	20 years ago
pci.h	[PATCH] Make sparc64 use setup-res.c	20 years ago
pconf.h	Linux-2.6.12-rc2	20 years ago
percpu.h	Linux-2.6.12-rc2	20 years ago
perfctr.h	Linux-2.6.12-rc2	20 years ago
pgalloc.h	[SPARC64]: Kill useless __pte_alloc_one_kernel indirection	20 years ago
pgtable.h	[SPARC]: Kill io_remap_page_range()	20 years ago
pil.h	Linux-2.6.12-rc2	20 years ago
poll.h	Linux-2.6.12-rc2	20 years ago
posix_types.h	Linux-2.6.12-rc2	20 years ago
processor.h	[SPARC64]: remove use of asm/segment.h	20 years ago
psrcompat.h	Linux-2.6.12-rc2	20 years ago
pstate.h	Linux-2.6.12-rc2	20 years ago
ptrace.h	[SPARC64]: Move syscall success and newchild state out of thread flags.	20 years ago
reg.h	Linux-2.6.12-rc2	20 years ago
resource.h	Linux-2.6.12-rc2	20 years ago
rtc.h	Linux-2.6.12-rc2	20 years ago
rwsem-const.h	Linux-2.6.12-rc2	20 years ago
rwsem.h	[SPARC64]: Simplify asm/rwsem.h slightly.	20 years ago
sbus.h	Linux-2.6.12-rc2	20 years ago
scatterlist.h	Linux-2.6.12-rc2	20 years ago
seccomp.h	[SPARC64]: Add missing asm-sparc64/seccomp.h file.	20 years ago
sections.h	Linux-2.6.12-rc2	20 years ago
semaphore.h	Linux-2.6.12-rc2	20 years ago
sembuf.h	Linux-2.6.12-rc2	20 years ago
setup.h	Linux-2.6.12-rc2	20 years ago
sfafsr.h	[SPARC64]: Revamp Spitfire error trap handling.	20 years ago
sfp-machine.h	Linux-2.6.12-rc2	20 years ago
shmbuf.h	Linux-2.6.12-rc2	20 years ago
shmparam.h	Linux-2.6.12-rc2	20 years ago
sigcontext.h	Linux-2.6.12-rc2	20 years ago
siginfo.h	[PATCH] consolidate SIGEV_PAD_SIZE	20 years ago
signal.h	[SPARC64]: Add support for IRQ pre-handlers.	20 years ago
smp.h	[PATCH] smp_processor_id() cleanup	20 years ago
socket.h	[NET]: Introduce SO_{SND,RCV}BUFFORCE socket options	20 years ago
sockios.h	Linux-2.6.12-rc2	20 years ago
solerrno.h	Linux-2.6.12-rc2	20 years ago
spinlock.h	[PATCH] spinlock consolidation	20 years ago
spinlock_types.h	[PATCH] spinlock consolidation	20 years ago
spitfire.h	[SPARC64]: Kill totally unused inline functions from asm/spitfire.h	20 years ago
starfire.h	Linux-2.6.12-rc2	20 years ago
stat.h	[PATCH] sparc64: Fix stat	20 years ago
statfs.h	Linux-2.6.12-rc2	20 years ago
string.h	Linux-2.6.12-rc2	20 years ago
sunbpp.h	Linux-2.6.12-rc2	20 years ago
svr4.h	Linux-2.6.12-rc2	20 years ago
system.h	[SPARC64]: Inline membar()'s again.	20 years ago
termbits.h	Linux-2.6.12-rc2	20 years ago
termios.h	[SPARC64]: Report any user access faults in termios accessors.	20 years ago
thread_info.h	[SPARC64]: Move kernel unaligned trap handlers into assembler file.	20 years ago
timer.h	[SPARC64]: Privatize sun5_timer.	20 years ago
timex.h	Linux-2.6.12-rc2	20 years ago
tlb.h	Linux-2.6.12-rc2	20 years ago
tlbflush.h	Linux-2.6.12-rc2	20 years ago
topology.h	Linux-2.6.12-rc2	20 years ago
ttable.h	Linux-2.6.12-rc2	20 years ago
types.h	[PATCH] sab: consolidate kmem_bufctl_t	20 years ago
uaccess.h	[PATCH] remove verify_area(): remove verify_area() from various uaccess.h headers	20 years ago
uctx.h	Linux-2.6.12-rc2	20 years ago
unaligned.h	Linux-2.6.12-rc2	20 years ago
unistd.h	[SPARC]: Add inotify syscall entries.	20 years ago
upa.h	Linux-2.6.12-rc2	20 years ago
user.h	Linux-2.6.12-rc2	20 years ago
utrap.h	Linux-2.6.12-rc2	20 years ago
vga.h	Linux-2.6.12-rc2	20 years ago
visasm.h	Linux-2.6.12-rc2	20 years ago
vuid_event.h	Linux-2.6.12-rc2	20 years ago
watchdog.h	Linux-2.6.12-rc2	20 years ago
xor.h	Linux-2.6.12-rc2	20 years ago