The patch titled
lock validator: add CONFIG_DEBUG_NON_NESTED_UNLOCKS
has been added to the -mm tree. Its filename is
lock-validator-enable-lock-validator-in-kconfig-add-config_debug_non_nested_unlocks-kconfig.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: lock validator: add CONFIG_DEBUG_NON_NESTED_UNLOCKS
From: Ingo Molnar <mingo@xxxxxxx>
Add CONFIG_DEBUG_NON_NESTED_UNLOCKS: if enabled then a non-alarming message
about out of order unlocks is printed. If disabled then we fall back to
the non-nested unlock method automatically, without printing a message and
stopping the validator.
Defaults to disabled. Tested with the option both on and off.
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
lib/Kconfig.debug | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff -puN lib/Kconfig.debug~lock-validator-enable-lock-validator-in-kconfig-add-config_debug_non_nested_unlocks-kconfig lib/Kconfig.debug
--- devel/lib/Kconfig.debug~lock-validator-enable-lock-validator-in-kconfig-add-config_debug_non_nested_unlocks-kconfig 2006-06-06 01:27:31.000000000 -0700
+++ devel-akpm/lib/Kconfig.debug 2006-06-06 01:27:31.000000000 -0700
@@ -327,6 +327,19 @@ config LOCKDEP
default y
depends on PROVE_SPIN_LOCKING || PROVE_RW_LOCKING || PROVE_MUTEX_LOCKING || PROVE_RWSEM_LOCKING
+config DEBUG_NON_NESTED_UNLOCKS
+ bool "Detect non-nested unlocks"
+ depends on LOCKDEP
+ help
+ If you say Y here, the lock dependency engine will do
+ additional runtime checks to detect and print non-nested
+ unlocks.
+ Non-nested unlocks are valid uses of the kernel's locking
+ APIs, but they cause more overhead for the validator, and
+ they can also be a sign for locking bugs or suboptimal
+ locking, so it's not a bad idea to annotate and thus
+ document those places.
+
config DEBUG_LOCKDEP
bool "Lock dependency engine debugging"
depends on LOCKDEP
_
Patches currently in -mm which might be from mingo@xxxxxxx are
git-acpi.patch
fix-drivers-mfd-ucb1x00-corec-irq-probing-bug.patch
ieee1394-semaphore-to-mutex-conversion.patch
git-infiniband.patch
git-netdev-all.patch
lock-validator-fix-ns83820c-irq-flags-bug.patch
lock-validator-fix-ns83820c-irq-flags-bug-part.patch
lock-validator-fix-ns83820c-irq-flags-part-3.patch
ipw2200-locking-fix.patch
revert-gregkh-pci-pci-test-that-drivers-properly-call-pci_set_master.patch
fall-back-to-old-style-call-trace-if-no-unwinding.patch
allow-unwinder-to-build-without-module-support.patch
lock-validator-lockdep-small-xfs-init_rwsem-cleanup.patch
swapless-pm-add-r-w-migration-entries.patch
mm-slabc-fix-early-init-assumption.patch
i386-break-out-of-recursion-in-stackframe-walk.patch
x86-re-enable-generic-numa.patch
vdso-randomize-the-i386-vdso-by-moving-it-into-a-vma.patch
vdso-randomize-the-i386-vdso-by-moving-it-into-a-vma-tidy.patch
vdso-randomize-the-i386-vdso-by-moving-it-into-a-vma-arch_vma_name-fix.patch
vdso-randomize-the-i386-vdso-by-moving-it-into-a-vma-vs-x86_64-mm-reliable-stack-trace-support-i386.patch
vdso-randomize-the-i386-vdso-by-moving-it-into-a-vma-vs-x86_64-mm-reliable-stack-trace-support-i386-2.patch
powerpc-vdso-updates.patch
work-around-ppc64-bootup-bug-by-making-mutex-debugging-save-restore-irqs.patch
kernel-kernel-cpuc-to-mutexes.patch
cond-resched-might-sleep-fix.patch
define-__raw_get_cpu_var-and-use-it.patch
ide-cd-end-of-media-error-fix.patch
spin-rwlock-init-cleanups.patch
inotify-split-kernel-api-from-userspace-support.patch
lock-validator-introduce-warn_on_oncecond.patch
lock-validator-introduce-warn_on_oncecond-speedup.patch
emu10k1-mark-midi_spinlock-as-used.patch
epoll-use-unlocked-wqueue-operations.patch
fix-irqpoll-to-honor-disable_irq.patch
time-clocksource-infrastructure.patch
sched-fix-smt-nice-lock-contention-and-optimization.patch
sched-fix-smt-nice-lock-contention-and-optimization-tidy.patch
sched-comment-bitmap-size-accounting.patch
sched-fix-interactive-ceiling-code.patch
sched-implement-smpnice.patch
sched-protect-calculation-of-max_pull-from-integer-wrap.patch
sched-store-weighted-load-on-up.patch
sched-add-discrete-weighted-cpu-load-function.patch
sched-prevent-high-load-weight-tasks-suppressing-balancing.patch
sched-improve-stability-of-smpnice-load-balancing.patch
sched-improve-smpnice-load-balancing-when-load-per-task.patch
smpnice-dont-consider-sched-groups-which-are-lightly-loaded-for-balancing.patch
smpnice-dont-consider-sched-groups-which-are-lightly-loaded-for-balancing-fix.patch
sched-modify-move_tasks-to-improve-load-balancing-outcomes.patch
sched-avoid-unnecessarily-moving-highest-priority-task-move_tasks.patch
sched-avoid-unnecessarily-moving-highest-priority-task-move_tasks-fix-2.patch
sched_domain-handle-kmalloc-failure.patch
sched_domain-handle-kmalloc-failure-fix.patch
sched_domain-dont-use-gfp_atomic.patch
sched_domain-use-kmalloc_node.patch
sched_domain-allocate-sched_group-structures-dynamically.patch
sched-add-above-background-load-function.patch
mm-implement-swap-prefetching-fix.patch
pi-futex-futex-code-cleanups.patch
pi-futex-robust-futex-docs-fix.patch
pi-futex-introduce-debug_check_no_locks_freed.patch
pi-futex-introduce-warn_on_smp.patch
pi-futex-add-plist-implementation.patch
pi-futex-scheduler-support-for-pi.patch
pi-futex-rt-mutex-core.patch
pi-futex-rt-mutex-docs.patch
pi-futex-rt-mutex-docs-update.patch
pi-futex-rt-mutex-debug.patch
pi-futex-rt-mutex-tester.patch
pi-futex-rt-mutex-futex-api.patch
pi-futex-futex_lock_pi-futex_unlock_pi-support.patch
futex_requeue-optimization.patch
fix-ide-deadlock-in-error-reporting-code.patch
genirq-rename-desc-handler-to-desc-chip.patch
genirq-rename-desc-handler-to-desc-chip-power-fix.patch
genirq-rename-desc-handler-to-desc-chip-ia64-fix.patch
genirq-rename-desc-handler-to-desc-chip-ia64-fix-2.patch
genirq-sem2mutex-probe_sem-probing_active.patch
genirq-cleanup-merge-irq_affinity-into-irq_desc.patch
genirq-cleanup-remove-irq_descp.patch
genirq-cleanup-remove-irq_descp-fix.patch
genirq-cleanup-remove-fastcall.patch
genirq-cleanup-misc-code-cleanups.patch
genirq-cleanup-reduce-irq_desc_t-use-mark-it-obsolete.patch
genirq-cleanup-include-linux-irqh.patch
genirq-cleanup-merge-irq_dir-smp_affinity_entry-into-irq_desc.patch
genirq-cleanup-merge-pending_irq_cpumask-into-irq_desc.patch
genirq-cleanup-turn-arch_has_irq_per_cpu-into-config_irq_per_cpu.patch
genirq-debug-better-debug-printout-in-enable_irq.patch
genirq-add-retrigger-irq-op-to-consolidate-hw_irq_resend.patch
genirq-doc-comment-include-linux-irqh-structures.patch
genirq-doc-handle_irq_event-and-__do_irq-comments.patch
genirq-cleanup-no_irq_type-cleanups.patch
genirq-doc-add-design-documentation.patch
genirq-add-genirq-sw-irq-retrigger.patch
genirq-add-irq_noprobe-support.patch
genirq-add-irq_norequest-support.patch
genirq-add-irq_noautoen-support.patch
genirq-update-copyrights.patch
genirq-core.patch
genirq-msi-fixes-2.patch
genirq-add-irq-chip-support.patch
genirq-add-irq-chip-support-fix.patch
genirq-add-handle_bad_irq.patch
genirq-add-irq-wake-power-management-support.patch
genirq-add-sa_trigger-support.patch
genirq-cleanup-no_irq_type-no_irq_chip-rename.patch
genirq-convert-the-x86_64-architecture-to-irq-chips.patch
genirq-convert-the-i386-architecture-to-irq-chips.patch
genirq-convert-the-i386-architecture-to-irq-chips-fix-2.patch
genirq-more-verbose-debugging-on-unexpected-irq-vectors.patch
genirq-add-chip-eoi-fastack-fasteoi.patch
genirq-add-chip-eoi-fastack-fasteoi-fix.patch
lock-validator-sparc64-sparc-m68k-alpha-cris-build-fix.patch
lock-validator-floppyc-irq-release-fix.patch
lock-validator-floppyc-irq-release-fix-fix.patch
lock-validator-forcedethc-fix.patch
lock-validator-mutex-section-binutils-workaround.patch
lock-validator-add-__module_address-method.patch
lock-validator-better-lock-debugging.patch
lock-validator-locking-api-self-tests.patch
lock-validator-locking-api-self-tests-self-test-fix.patch
lock-validator-locking-init-debugging-improvement.patch
lock-validator-beautify-x86_64-stacktraces.patch
lock-validator-beautify-x86_64-stacktraces-fix.patch
lock-validator-beautify-x86_64-stacktraces-fix-2.patch
lock-validator-beautify-x86_64-stacktraces-fix-3.patch
lock-validator-beautify-x86_64-stacktraces-fix-4.patch
lock-validator-x86_64-document-stack-frame-internals.patch
lock-validator-stacktrace.patch
lock-validator-stacktrace-build-fix.patch
lock-validator-stacktrace-warning-fix.patch
lock-validator-stacktrace-fix-on-x86_64.patch
lock-validator-fown-locking-workaround.patch
lock-validator-sk_callback_lock-workaround.patch
lock-validator-irqtrace-core.patch
lock-validator-irqtrace-core-powerpc-fix-1.patch
lock-validator-irqtrace-core-non-x86-fix.patch
lock-validator-irqtrace-core-non-x86-fix-2.patch
lock-validator-irqtrace-core-non-x86-fix-3.patch
lock-validator-irqtrace-entrys-fix.patch
lock-validator-irqtrace-core-remove-softirqc-warn_on.patch
lock-validator-irqtrace-cleanup-include-asm-i386-irqflagsh.patch
lock-validator-irqtrace-cleanup-include-asm-x86_64-irqflagsh.patch
lock-validator-x86_64-irqflags-trace-entrys-fix.patch
lock-validator-lockdep-add-local_irq_enable_in_hardirq-api.patch
lock-validator-add-per_cpu_offset.patch
lock-validator-add-per_cpu_offset-fix.patch
lock-validator-core.patch
lock-validator-core-early_boot_irqs_-build-fix.patch
lock-validator-core-early_boot_irqs_-build-fix-sparc64-sparc-m68k-alpha-cris-irqtrace-build-fix.patch
lock-validator-core-fix-compiler-warning.patch
lock-validator-core-add-config_debug_non_nested_unlocks.patch
lock-validator-procfs.patch
lock-validator-core-multichar-fix.patch
lock-validator-core-count_matching_names-fix.patch
lock-validator-design-docs.patch
lock-validator-prove-rwsem-locking-correctness.patch
lock-validator-prove-rwsem-locking-correctness-fix.patch
lock-validator-prove-rwsem-locking-correctness-powerpc-fix.patch
lock-validator-prove-spinlock-rwlock-locking-correctness.patch
lock-validator-prove-mutex-locking-correctness.patch
lock-validator-prove-mutex-locking-correctness-fix-null-type-name-bug.patch
lock-validator-print-all-lock-types-on-sysrq-d.patch
lock-validator-x86_64-early-init.patch
lock-validator-smp-alternatives-workaround.patch
lock-validator-do-not-recurse-in-printk.patch
lock-validator-disable-nmi-watchdog-if-config_lockdep.patch
lock-validator-disable-nmi-watchdog-if-config_lockdep-i386.patch
lock-validator-disable-nmi-watchdog-if-config_lockdep-x86_64.patch
lock-validator-special-locking-bdev.patch
lock-validator-special-locking-bdev-fix.patch
lock-validator-special-locking-direct-io.patch
lock-validator-special-locking-serial.patch
lock-validator-special-locking-serial-fix.patch
lock-validator-special-locking-dcache.patch
lock-validator-special-locking-i_mutex.patch
lock-validator-special-locking-s_lock.patch
lock-validator-special-locking-futex.patch
lock-validator-special-locking-genirq.patch
lock-validator-special-locking-genirq-lock-validator-early_init_irq_lock_type-build-fix.patch
lock-validator-special-locking-completions.patch
lock-validator-special-locking-waitqueues.patch
lock-validator-special-locking-mm.patch
lock-validator-special-locking-serio.patch
lock-validator-special-locking-slab.patch
lock-validator-special-locking-skb_queue_head_init.patch
lock-validator-special-locking-net-ipv4-igmpcpatch.patch
lock-validator-special-locking-net-ipv4-igmpc-2.patch
lock-validator-special-locking-timerc.patch
lock-validator-special-locking-schedc.patch
lock-validator-special-locking-sctp.patch
lock-validator-special-locking-hrtimerc.patch
lock-validator-special-locking-sock_lock_init.patch
lock-validator-special-locking-af_unix.patch
lock-validator-special-locking-bh_lock_sock.patch
lock-validator-special-locking-mmap_sem.patch
lock-validator-special-locking-sb-s_umount.patch
lock-validator-special-locking-reiser4-false-positive.patch
lock-validator-special-locking-sb-s_umount-fix.patch
lock-validator-special-locking-sb-s_umount-2.patch
lock-validator-special-locking-sb-s_umount-2-fix.patch
lockdep-annotate-rpc_populate-for.patch
lock-validator-special-locking-jbd.patch
lock-validator-special-locking-posix-timers.patch
lock-validator-special-locking-sch_genericc.patch
lock-validator-special-locking-xfrm.patch
lockdep-add-i_mutex-ordering-annotations-to-the-sunrpc.patch
lockdep-add-parent-child-annotations-to-usbfs.patch
lock-validator-special-locking-sound-core-seq-seq_portsc.patch
lock-validator-special-locking-sound-core-seq-seq_devicec.patch
lock-validator-special-locking-sound-core-seq-seq_devicec-fix.patch
lock-validator-fix-rt_hash_lock_sz.patch
lock-validator-introduce-irq__lockdep.patch
locking-validator-special-rule-8390c-disable_irq.patch
locking-validator-special-rule-3c59xc-disable_irq.patch
lock-validator-enable-lock-validator-in-kconfig.patch
lock-validator-enable-lock-validator-in-kconfig-require-trace_irqflags_support.patch
lock-validator-enable-lock-validator-in-kconfig-not-yet.patch
lock-validator-enable-lock-validator-in-kconfig-add-config_debug_non_nested_unlocks-kconfig.patch
lockdep-one-stacktrace-column-if-config_lockdep=y.patch
i386-remove-multi-entry-backtraces.patch
lockdep-further-improve-stacktrace-output.patch
lock-validator-irqtrace-support-non-x86-architectures.patch
lock-validator-disable-oprofile-if-lockdep=y.patch
lock-validator-select-kallsyms_all.patch
lock-validator-special-locking-kgdb.patch
detect-atomic-counter-underflows.patch
debug-shared-irqs.patch
make-frame_pointer-default=y.patch
mutex-subsystem-synchro-test-module.patch
vdso-print-fatal-signals.patch
vdso-improve-print_fatal_signals-support-by-adding-memory-maps.patch
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