Bart Van Assche 108c14858b locking/lockdep: Add support for dynamic keys ... A shortcoming of the current lockdep implementation is that it requires lock keys to be allocated statically. That forces all instances of lock objects that occur in a given data structure to share a lock key. Since lock dependency analysis groups lock objects per key sharing lock keys can cause false positive lockdep reports. Make it possible to avoid such false positive reports by allowing lock keys to be allocated dynamically. Require that dynamically allocated lock keys are registered before use by calling lockdep_register_key(). Complain about attempts to register the same lock key pointer twice without calling lockdep_unregister_key() between successive registration calls. The purpose of the new lock_keys_hash[] data structure that keeps track of all dynamic keys is twofold: - Verify whether the lockdep_register_key() and lockdep_unregister_key() functions are used correctly. - Avoid that lockdep_init_map() complains when encountering a dynamically allocated key. Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Waiman Long <longman@redhat.com> Cc: Will Deacon <will.deacon@arm.com> Cc: johannes.berg@intel.com Cc: tj@kernel.org Link: https://lkml.kernel.org/r/20190214230058.196511-19-bvanassche@acm.org Signed-off-by: Ingo Molnar <mingo@kernel.org>		2019-02-28 07:55:47 +01:00
..
bpf	bpf, lpm: fix lookup bug in map_delete_elem	2019-02-22 16:17:53 +01:00
cgroup	Merge branch 'for-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2018-12-29 10:57:20 -08:00
configs	kvm_config: add CONFIG_VIRTIO_MENU	2018-10-24 20:55:56 -04:00
debug	kdb: use bool for binary state indicators	2018-12-30 08:31:52 +00:00
dma	swiotlb: clear io_tlb_start and io_tlb_end in swiotlb_exit	2019-01-16 09:59:17 -05:00
events	perf/core: Fix impossible ring-buffer sizes warning	2019-02-13 08:05:02 +01:00
gcov	gcov: remove CONFIG_GCOV_FORMAT_AUTODETECT	2018-06-08 18:56:02 +09:00
irq	genirq/irqdesc: Fix double increment in alloc_descs()	2019-01-18 00:43:09 +01:00
livepatch	livepatch: Replace synchronize_sched() with synchronize_rcu()	2018-12-01 12:38:50 -08:00
locking	locking/lockdep: Add support for dynamic keys	2019-02-28 07:55:47 +01:00
power	mm: convert totalram_pages and totalhigh_pages variables to atomic	2018-12-28 12:11:47 -08:00
printk	Remove 'type' argument from access_ok() function	2019-01-03 18:57:57 -08:00
rcu	rcutorture: Don't do busted forward-progress testing	2018-12-01 12:45:42 -08:00
sched	Merge branch 'linus' into locking/core, to pick up fixes	2019-02-28 07:50:39 +01:00
time	posix-cpu-timers: Unbreak timer rearming	2019-01-15 16:34:37 +01:00
trace	Two more tracing fixes	2019-02-18 09:40:16 -08:00
.gitignore	…
Kconfig.freezer	…
Kconfig.hz	…
Kconfig.locks	…
Kconfig.preempt	kconfig: warn no new line at end of file	2018-12-15 17:44:35 +09:00
Makefile	kbuild: change filechk to surround the given command with { }	2019-01-06 09:46:51 +09:00
acct.c	…
async.c	…
audit.c	audit: remove duplicated include from audit.c	2018-12-14 12:09:30 -05:00
audit.h	audit: use current whenever possible	2018-11-26 18:41:21 -05:00
audit_fsnotify.c	audit: minimize our use of audit_log_format()	2018-11-26 18:40:00 -05:00
audit_tree.c	audit: minimize our use of audit_log_format()	2018-11-26 18:40:00 -05:00
audit_watch.c	audit: minimize our use of audit_log_format()	2018-11-26 18:40:00 -05:00
auditfilter.c	audit: rename FILTER_TYPE to FILTER_EXCLUDE	2018-06-19 10:39:54 -04:00
auditsc.c	audit: use current whenever possible	2018-11-26 18:41:21 -05:00
backtracetest.c	…
bounds.c	kbuild: fix kernel/bounds.c 'W=1' warning	2018-10-31 08:54:14 -07:00
capability.c	…
compat.c	make 'user_access_begin()' do 'access_ok()'	2019-01-04 12:56:09 -08:00
configs.c	…
context_tracking.c	…
cpu.c	Linux 5.0-rc5	2019-02-04 08:57:24 +01:00
cpu_pm.c	…
crash_core.c	kernel/crash_core.c: print timestamp using time64_t	2018-08-22 10:52:47 -07:00
crash_dump.c	…
cred.c	cred: export get_task_cred().	2018-12-19 13:52:44 -05:00
delayacct.c	delayacct: track delays from thrashing cache pages	2018-10-26 16:26:32 -07:00
dma.c	…
elfcore.c	…
exec_domain.c	…
exit.c	kernel/exit.c: release ptraced tasks before zap_pid_ns_processes	2019-02-01 15:46:23 -08:00
extable.c	…
fail_function.c	kernel/fail_function.c: remove meaningless null pointer check before debugfs_remove_recursive	2018-10-31 08:54:12 -07:00
fork.c	Merge branch 'akpm' (patches from Andrew)	2019-01-08 18:58:29 -08:00
freezer.c	PM / reboot: Eliminate race between reboot and suspend	2018-08-06 12:35:20 +02:00
futex.c	Merge branch 'linus' into locking/core, to pick up fixes	2019-02-28 07:50:39 +01:00
groups.c	…
hung_task.c	kernel/hung_task.c: break RCU locks based on jiffies	2019-01-04 13:13:45 -08:00
iomem.c	…
irq_work.c	…
jump_label.c	jump_label: move 'asm goto' support test to Kconfig	2019-01-06 09:46:51 +09:00
kallsyms.c	kallsyms: reduce size a little on 64-bit	2018-09-10 22:54:33 +09:00
kcmp.c	…
kcov.c	kernel/kcov.c: mark write_comp_data() as notrace	2019-01-04 13:13:47 -08:00
kexec.c	kexec: add call to LSM hook in original kexec_load syscall	2018-07-16 12:31:57 -07:00
kexec_core.c	mm: convert totalram_pages and totalhigh_pages variables to atomic	2018-12-28 12:11:47 -08:00
kexec_file.c	kexec_file: kexec_walk_memblock() only walks a dedicated region at kdump	2018-12-06 14:38:50 +00:00
kexec_internal.h	…
kmod.c	…
kprobes.c	Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-12-26 14:45:18 -08:00
ksysfs.c	…
kthread.c	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-08-13 11:25:07 -07:00
latencytop.c	…
memremap.c	mm/hmm: fix memremap.h, move dev_page_fault_t callback to hmm	2018-12-28 12:11:52 -08:00
module-internal.h	modsign: log module name in the event of an error	2018-07-02 11:36:17 +02:00
module.c	jump_label: move 'asm goto' support test to Kconfig	2019-01-06 09:46:51 +09:00
module_signing.c	modsign: use all trusted keys to verify module signature	2018-11-07 14:41:41 +01:00
notifier.c	…
nsproxy.c	…
padata.c	padata: clean an indentation issue, remove extraneous space	2018-11-16 14:11:04 +08:00
panic.c	kernel/sysctl: add panic_print into sysctl	2019-01-04 13:13:47 -08:00
params.c	…
pid.c	Fix failure path in alloc_pid()	2018-12-28 12:42:30 -08:00
pid_namespace.c	signal: Use group_send_sig_info to kill all processes in a pid namespace	2018-09-16 16:08:25 +02:00
profile.c	mm: remove include/linux/bootmem.h	2018-10-31 08:54:16 -07:00
ptrace.c	Remove 'type' argument from access_ok() function	2019-01-03 18:57:57 -08:00
range.c	…
reboot.c	kernel/reboot.c: export pm_power_off_prepare	2018-09-11 16:13:24 +01:00
relay.c	relay: check return of create_buf_file() properly	2019-01-31 14:01:48 +01:00
resource.c	kernel, resource: check for IORESOURCE_SYSRAM in release_mem_region_adjustable	2018-12-28 12:11:49 -08:00
rseq.c	Remove 'type' argument from access_ok() function	2019-01-03 18:57:57 -08:00
seccomp.c	seccomp: fix UAF in user-trap code	2019-01-15 09:43:12 -08:00
signal.c	signal: Restore the stop PTRACE_EVENT_EXIT	2019-02-13 08:31:41 -06:00
smp.c	cpu/hotplug: Fix "SMT disabled by BIOS" detection for KVM	2019-01-30 19:27:00 +01:00
smpboot.c	smpboot: Remove cpumask from the API	2018-07-03 09:20:44 +02:00
smpboot.h	…
softirq.c	Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-10-25 11:43:47 -07:00
stackleak.c	stackleak: Mark stackleak_track_stack() as notrace	2018-12-05 19:31:44 -08:00
stacktrace.c	…
stop_machine.c	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-08-13 11:25:07 -07:00
sys.c	kernel/sys.c: Clarify that UNAME26 does not generate unique versions anymore	2019-01-14 10:38:03 +12:00
sys_ni.c	y2038: socket: Add compat_sys_recvmmsg_time64	2018-12-18 16:13:04 +01:00
sysctl.c	kernel/sysctl: add panic_print into sysctl	2019-01-04 13:13:47 -08:00
sysctl_binary.c	kernel/sysctl: add panic_print into sysctl	2019-01-04 13:13:47 -08:00
task_work.c	…
taskstats.c	…
test_kprobes.c	kprobes: Remove jprobe API implementation	2018-06-21 12:33:05 +02:00
torture.c	torture: Remove unnecessary "ret" variables	2018-12-01 12:45:35 -08:00
tracepoint.c	tracing: Replace synchronize_sched() and call_rcu_sched()	2018-11-27 09:21:41 -08:00
tsacct.c	…
ucount.c	…
uid16.c	…
uid16.h	…
umh.c	umh: add exit routine for UMH process	2019-01-11 18:05:40 -08:00
up.c	smp,cpumask: introduce on_each_cpu_cond_mask	2018-10-09 16:51:11 +02:00
user-return-notifier.c	…
user.c	userns: use irqsave variant of refcount_dec_and_lock()	2018-08-22 10:52:47 -07:00
user_namespace.c	userns: also map extents in the reverse map to kernel IDs	2018-11-07 23:51:16 -06:00
utsname.c	…
utsname_sysctl.c	sys: don't hold uts_sem while accessing userspace memory	2018-08-11 02:05:53 -05:00
watchdog.c	watchdog: Mark watchdog touch functions as notrace	2018-08-30 12:56:40 +02:00
watchdog_hld.c	watchdog: Mark watchdog touch functions as notrace	2018-08-30 12:56:40 +02:00
workqueue.c	psi: fix aggregation idle shut-off	2019-02-01 15:46:23 -08:00
workqueue_internal.h	psi: fix aggregation idle shut-off	2019-02-01 15:46:23 -08:00