You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

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
..
iSeries	[PATCH] iSeries build with newer assemblers and compilers	20 years ago
a.out.h	…
abs_addr.h	[PATCH] ppc64: Remove CONFIG_MSCHUNKS	20 years ago
atomic.h	…
auxvec.h	[PATCH] auxiliary vector cleanups	20 years ago
bitops.h	…
bootinfo.h	…
btext.h	…
bug.h	[PATCH] ppc64: Fix issue with gcc 4.0 compiled kernels	20 years ago
byteorder.h	[PATCH] headers: enable ppc64 ___arch__swab16 and ___arch__swab32	20 years ago
cache.h	…
cacheflush.h	Linux-2.6.12-rc2	20 years ago
checksum.h	…
compat.h	[PATCH] compat: be more consistent about [ug]id_t	20 years ago
cputable.h	[PATCH] ppc64: Move oprofile_model into cpu feature struct	20 years ago
current.h	…
dbdma.h	…
delay.h	…
dma-mapping.h	…
dma.h	[PATCH] ppc64 iSeries: allow build with no PCI	20 years ago
eeh.h	[PATCH] basic iomem annotations (ppc64)	20 years ago
elf.h	[PATCH] auxiliary vector cleanups	20 years ago
firmware.h	[PATCH] ppc64: introduce FW_FEATURE_ISERIES	20 years ago
floppy.h	Linux-2.6.12-rc2	20 years ago
futex.h	[PATCH] FUTEX_WAKE_OP: pthread_cond_signal() speedup	20 years ago
hardirq.h	…
hvcall.h	Linux-2.6.12-rc2	20 years ago
hvconsole.h	[PATCH] hvc_console: Register ops when setting up hvc_console	20 years ago
hvcserver.h	…
hw_irq.h	Linux-2.6.12-rc2	20 years ago
ide.h	…
imalloc.h	[PATCH] Four level pagetables for ppc64	20 years ago
io.h	[PATCH] basic iomem annotations (ppc64)	20 years ago
iommu.h	[PATCH] ppc64: move iSeries vio iommu init	20 years ago
ipcbuf.h	…
irq.h	[PATCH] CHECK_IRQ_PER_CPU() to avoid dead code in __do_IRQ()	20 years ago
kdebug.h	[PATCH] RCU: clean up a few remaining synchronize_kernel() calls	20 years ago
kexec.h	[PATCH] ppc64: kexec support for ppc64	20 years ago
keylargo.h	…
kmap_types.h	…
kprobes.h	[PATCH] kprobes: fix bug when probed on task and isr functions	20 years ago
lmb.h	[PATCH] SPARSEMEM EXTREME	20 years ago
lppaca.h	[PATCH] ppc64: Add VMX save flag to VPA	20 years ago
machdep.h	[PATCH] ppc64: Take udbg out of ppc_md	20 years ago
macio.h	…
memory.h	[PATCH] FUTEX_WAKE_OP: pthread_cond_signal() speedup	20 years ago
mmu.h	[PATCH] Invert sense of SLB class bit	20 years ago
mmu_context.h	[PATCH] ppc64: pgtable.h and other header cleanups	20 years ago
mmzone.h	[PATCH] ppc64: sparsemem memory model	20 years ago
naca.h	[PATCH] Remove NACA fixed address constraint	20 years ago
numnodes.h	…
nvram.h	[PATCH] ppc64: add a minimal nvram driver	20 years ago
of_device.h	…
oprofile_impl.h	[PATCH] ppc64: Move oprofile_impl.h into include/asm-ppc64	20 years ago
pSeries_reconfig.h	…
paca.h	[PATCH] ppc64: Simplify counting of lpevents, remove lpevent_count from paca	20 years ago
page.h	[PATCH] mm: consolidate get_order	20 years ago
parport.h	…
pci-bridge.h	[PATCH] Separate pci bits out of struct device_node	20 years ago
pci.h	[PATCH] Make sparc64 use setup-res.c	20 years ago
pgalloc.h	[PATCH] Four level pagetables for ppc64	20 years ago
pgtable.h	[PATCH] ppc64: four level pagetables fix	20 years ago
plpar_wrappers.h	…
pmac_feature.h	Linux-2.6.12-rc2	20 years ago
pmac_low_i2c.h	…
pmc.h	[PATCH] ppc64: Move ppc64_enable_pmcs() logic into a ppc_md function	20 years ago
posix_types.h	…
ppc32.h	[PATCH] compat: introduce compat_time_t	20 years ago
ppc_asm.h	…
ppcdebug.h	Linux-2.6.12-rc2	20 years ago
processor.h	[PATCH] Kprobes: prevent possible race conditions ppc64 changes	20 years ago
prom.h	[PATCH] Separate pci bits out of struct device_node	20 years ago
ptrace-common.h	…
ptrace.h	…
rtas.h	[PATCH] ppc64: pSeries_progress -> rtas_progress	20 years ago
rwsem.h	…
scatterlist.h	Linux-2.6.12-rc2	20 years ago
seccomp.h	…
sections.h	…
semaphore.h	Linux-2.6.12-rc2	20 years ago
serial.h	…
sigcontext.h	…
signal.h	[PATCH] asm/signal.h unification	20 years ago
smp.h	[PATCH] ppc64: add BPA platform type	20 years ago
smu.h	…
sparsemem.h	[PATCH] ppc64: sparsemem memory model	20 years ago
spinlock.h	[PATCH] spinlock consolidation	20 years ago
spinlock_types.h	[PATCH] spinlock consolidation	20 years ago
sstep.h	…
stat.h	…
statfs.h	…
system.h	[PATCH] ppc64: speedup cmpxchg	20 years ago
systemcfg.h	…
thread_info.h	[PATCH] streamline preempt_count type across archs	20 years ago
time.h	[PATCH] ppc64: consolidate calibrate_decr implementations	20 years ago
tlb.h	…
tlbflush.h	…
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
ucontext.h	…
udbg.h	[PATCH] ppc64: Consolidate early console and PPCDBG code	20 years ago
uninorth.h	…
unistd.h	[PATCH] ppc64: inotify syscalls	20 years ago
vdso.h	…
vga.h	…
vio.h	[PATCH] Make MODULE_DEVICE_TABLE work for vio devices	20 years ago
xics.h	[PATCH] ppc64: fix for kexec boot issue	20 years ago