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9a11b49a80
Generic lock debugging:
- generalized lock debugging framework. For example, a bug in one lock
subsystem turns off debugging in all lock subsystems.
- got rid of the caller address passing (__IP__/__IP_DECL__/etc.) from
the mutex/rtmutex debugging code: it caused way too much prototype
hackery, and lockdep will give the same information anyway.
- ability to do silent tests
- check lock freeing in vfree too.
- more finegrained debugging options, to allow distributions to
turn off more expensive debugging features.
There's no separate 'held mutexes' list anymore - but there's a 'held locks'
stack within lockdep, which unifies deadlock detection across all lock
classes. (this is independent of the lockdep validation stuff - lockdep first
checks whether we are holding a lock already)
Here are the current debugging options:
CONFIG_DEBUG_MUTEXES=y
CONFIG_DEBUG_LOCK_ALLOC=y
which do:
config DEBUG_MUTEXES
bool "Mutex debugging, basic checks"
config DEBUG_LOCK_ALLOC
bool "Detect incorrect freeing of live mutexes"
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
64 lines
1.8 KiB
Makefile
64 lines
1.8 KiB
Makefile
#
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# Makefile for some libs needed in the kernel.
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#
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lib-y := errno.o ctype.o string.o vsprintf.o cmdline.o \
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bust_spinlocks.o rbtree.o radix-tree.o dump_stack.o \
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idr.o div64.o int_sqrt.o bitmap.o extable.o prio_tree.o \
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sha1.o
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lib-$(CONFIG_SMP) += cpumask.o
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lib-y += kobject.o kref.o kobject_uevent.o klist.o
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obj-y += sort.o parser.o halfmd4.o iomap_copy.o debug_locks.o
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ifeq ($(CONFIG_DEBUG_KOBJECT),y)
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CFLAGS_kobject.o += -DDEBUG
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CFLAGS_kobject_uevent.o += -DDEBUG
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endif
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obj-$(CONFIG_DEBUG_SPINLOCK) += spinlock_debug.o
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lib-$(CONFIG_RWSEM_GENERIC_SPINLOCK) += rwsem-spinlock.o
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lib-$(CONFIG_RWSEM_XCHGADD_ALGORITHM) += rwsem.o
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lib-$(CONFIG_SEMAPHORE_SLEEPERS) += semaphore-sleepers.o
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lib-$(CONFIG_GENERIC_FIND_NEXT_BIT) += find_next_bit.o
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lib-$(CONFIG_GENERIC_HWEIGHT) += hweight.o
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obj-$(CONFIG_LOCK_KERNEL) += kernel_lock.o
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obj-$(CONFIG_PLIST) += plist.o
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obj-$(CONFIG_DEBUG_PREEMPT) += smp_processor_id.o
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ifneq ($(CONFIG_HAVE_DEC_LOCK),y)
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lib-y += dec_and_lock.o
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endif
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obj-$(CONFIG_CRC_CCITT) += crc-ccitt.o
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obj-$(CONFIG_CRC16) += crc16.o
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obj-$(CONFIG_CRC32) += crc32.o
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obj-$(CONFIG_LIBCRC32C) += libcrc32c.o
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obj-$(CONFIG_GENERIC_IOMAP) += iomap.o
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obj-$(CONFIG_GENERIC_ALLOCATOR) += genalloc.o
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obj-$(CONFIG_ZLIB_INFLATE) += zlib_inflate/
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obj-$(CONFIG_ZLIB_DEFLATE) += zlib_deflate/
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obj-$(CONFIG_REED_SOLOMON) += reed_solomon/
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obj-$(CONFIG_TEXTSEARCH) += textsearch.o
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obj-$(CONFIG_TEXTSEARCH_KMP) += ts_kmp.o
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obj-$(CONFIG_TEXTSEARCH_BM) += ts_bm.o
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obj-$(CONFIG_TEXTSEARCH_FSM) += ts_fsm.o
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obj-$(CONFIG_SMP) += percpu_counter.o
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obj-$(CONFIG_SWIOTLB) += swiotlb.o
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hostprogs-y := gen_crc32table
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clean-files := crc32table.h
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$(obj)/crc32.o: $(obj)/crc32table.h
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quiet_cmd_crc32 = GEN $@
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cmd_crc32 = $< > $@
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$(obj)/crc32table.h: $(obj)/gen_crc32table
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$(call cmd,crc32)
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