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Ahmed S. Darwish b75058614f sched: tasks: Use sequence counter with associated spinlock 
A sequence counter write side critical section must be protected by some
form of locking to serialize writers. A plain seqcount_t does not
contain the information of which lock must be held when entering a write
side critical section.

Use the new seqcount_spinlock_t data type, which allows to associate a
spinlock with the sequence counter. This enables lockdep to verify that
the spinlock used for writer serialization is held when the write side
critical section is entered.

If lockdep is disabled this lock association is compiled out and has
neither storage size nor runtime overhead.

Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20200720155530.1173732-14-a.darwish@linutronix.de
2020-07-29 16:14:26 +02:00
..
bpf
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2020-07-10 18:16:22 -07:00
cgroup
cgroup: fix cgroup_sk_alloc() for sk_clone_lock()
2020-07-07 13:34:11 -07:00
configs
compiler: remove CONFIG_OPTIMIZE_INLINING entirely
2020-04-07 10:43:42 -07:00
debug
kgdb: enable arch to support XML packet.
2020-07-09 20:09:28 -07:00
dma
dma-pool: do not allocate pool memory from CMA
2020-07-14 15:46:32 +02:00
events
Merge branch 'akpm' (patches from Andrew)
2020-06-09 09:54:46 -07:00
gcov
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
irq
genirq/affinity: Handle affinity setting on inactive interrupts correctly
2020-07-17 23:30:43 +02:00
kcsan
kcsan: Make KCSAN compatible with new IRQ state tracking
2020-07-10 12:00:00 +02:00
livepatch
livepatch: Make klp_apply_object_relocs static
2020-05-11 00:31:38 +02:00
locking
lockdep: Remove lockdep_hardirq{s_enabled,_context}() argument
2020-07-10 12:00:02 +02:00
power
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
printk
Revert "kernel/printk: add kmsg SEEK_CUR handling"
2020-06-21 20:47:20 -07:00
rcu
A single fix for a printk format warning in RCU.
2020-07-05 12:21:28 -07:00
sched
sched/fair: handle case of task_h_load() returning 0
2020-07-16 23:19:48 +02:00
time
timer: Fix wheel index calculation on last level
2020-07-17 21:44:05 +02:00
trace
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2020-06-25 18:27:40 -07:00
.gitignore
.gitignore: add SPDX License Identifier
2020-03-25 11:50:48 +01:00
acct.c
mmap locking API: convert mmap_sem comments
2020-06-09 09:39:14 -07:00
async.c
…
audit_fsnotify.c
fsnotify: use helpers to access data by data_type
2020-03-23 18:19:06 +01:00
audit_tree.c
…
audit_watch.c
\n
2020-04-06 08:58:42 -07:00
audit.c
audit/stable-5.8 PR 20200601
2020-06-02 17:13:37 -07:00
audit.h
audit: fix a net reference leak in audit_list_rules_send()
2020-04-22 15:23:10 -04:00
auditfilter.c
audit: fix a net reference leak in audit_list_rules_send()
2020-04-22 15:23:10 -04:00
auditsc.c
audit: add subj creds to NETFILTER_CFG record to
2020-05-20 18:09:19 -04:00
backtracetest.c
…
bounds.c
…
capability.c
…
compat.c
uaccess: Selectively open read or write user access
2020-05-01 12:35:21 +10:00
configs.c
proc: convert everything to "struct proc_ops"
2020-02-04 03:05:26 +00:00
context_tracking.c
context_tracking: Ensure that the critical path cannot be instrumented
2020-06-11 15:14:36 +02:00
cpu_pm.c
kernel/cpu_pm: Fix uninitted local in cpu_pm
2020-05-15 11:44:34 -07:00
cpu.c
The changes in this cycle are:
2020-06-03 13:06:42 -07:00
crash_core.c
…
crash_dump.c
crash_dump: Remove no longer used saved_max_pfn
2020-04-15 11:21:54 +02:00
cred.c
exec: Teach prepare_exec_creds how exec treats uids & gids
2020-05-20 14:44:21 -05:00
delayacct.c
…
dma.c
…
elfcore.c
kernel/elfcore.c: include proper prototypes
2019-09-25 17:51:39 -07:00
exec_domain.c
…
exit.c
mmap locking API: convert mmap_sem comments
2020-06-09 09:39:14 -07:00
extable.c
kernel/extable.c: use address-of operator on section symbols
2020-04-07 10:43:42 -07:00
fail_function.c
…
fork.c
sched: tasks: Use sequence counter with associated spinlock
2020-07-29 16:14:26 +02:00
freezer.c
Revert "libata, freezer: avoid block device removal while system is frozen"
2019-10-06 09:11:37 -06:00
futex.c
futex: Remove unused or redundant includes
2020-07-18 01:56:09 +02:00
gen_kheaders.sh
kbuild: add variables for compression tools
2020-06-06 23:42:01 +09:00
groups.c
mm: remove the pgprot argument to __vmalloc
2020-06-02 10:59:11 -07:00
hung_task.c
kernel/hung_task.c: introduce sysctl to print all traces when a hung task is detected
2020-06-08 11:05:56 -07:00
iomem.c
mm/nvdimm: add is_ioremap_addr and use that to check ioremap address
2019-07-12 11:05:40 -07:00
irq_work.c
irq_work, smp: Allow irq_work on call_single_queue
2020-05-28 10:54:15 +02:00
jump_label.c
jump_label: Don't warn on __exit jump entries
2019-08-29 15:10:10 +01:00
kallsyms.c
kallsyms: Refactor kallsyms_show_value() to take cred
2020-07-08 15:59:57 -07:00
kcmp.c
kernel/kcmp.c: Use new infrastructure to fix deadlocks in execve
2020-03-25 10:04:01 -05:00
Kconfig.freezer
…
Kconfig.hz
…
Kconfig.locks
sched/rt, locking: Use CONFIG_PREEMPTION
2019-12-08 14:37:36 +01:00
Kconfig.preempt
sched/Kconfig: Fix spelling mistake in user-visible help text
2019-11-12 11:35:32 +01:00
kcov.c
kcov: check kcov_softirq in kcov_remote_stop()
2020-06-10 19:14:17 -07:00
kexec_core.c
kexec: add machine_kexec_post_load()
2020-01-08 16:32:55 +00:00
kexec_elf.c
kexec_elf: support 32 bit ELF files
2019-09-06 23:58:44 +02:00
kexec_file.c
kexec: do not verify the signature without the lockdown or mandatory signature
2020-06-26 00:27:36 -07:00
kexec_internal.h
kexec: add machine_kexec_post_load()
2020-01-08 16:32:55 +00:00
kexec.c
kexec: add machine_kexec_post_load()
2020-01-08 16:32:55 +00:00
kheaders.c
…
kmod.c
kmod: make request_module() return an error when autoloading is disabled
2020-04-10 15:36:22 -07:00
kprobes.c
kprobes: Do not expose probe addresses to non-CAP_SYSLOG
2020-07-08 16:00:22 -07:00
ksysfs.c
…
kthread.c
maccess: rename probe_kernel_{read,write} to copy_{from,to}_kernel_nofault
2020-06-17 10:57:41 -07:00
latencytop.c
sysctl: pass kernel pointers to ->proc_handler
2020-04-27 02:07:40 -04:00
Makefile
Notifications over pipes + Keyring notifications
2020-06-13 09:56:21 -07:00
module_signature.c
MODSIGN: Export module signature definitions
2019-08-05 18:39:56 -04:00
module_signing.c
MODSIGN: Export module signature definitions
2019-08-05 18:39:56 -04:00
module-internal.h
…
module.c
Refactor kallsyms_show_value() users for correct cred
2020-07-09 13:09:30 -07:00
notifier.c
mm: remove vmalloc_sync_(un)mappings()
2020-06-02 10:59:12 -07:00
nsproxy.c
nsproxy: restore EINVAL for non-namespace file descriptor
2020-06-17 00:33:12 +02:00
padata.c
padata: upgrade smp_mb__after_atomic to smp_mb in padata_do_serial
2020-06-18 17:09:54 +10:00
panic.c
bug: Annotate WARN/BUG/stackfail as noinstr safe
2020-06-11 15:14:36 +02:00
params.c
lockdown: Lock down module params that specify hardware parameters (eg. ioport)
2019-08-19 21:54:16 -07:00
pid_namespace.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
2020-06-03 16:27:18 -07:00
pid.c
remove the no longer needed pid_alive() check in __task_pid_nr_ns()
2020-04-30 06:40:14 -05:00
profile.c
proc: convert everything to "struct proc_ops"
2020-02-04 03:05:26 +00:00
ptrace.c
ptrace: reintroduce usage of subjective credentials in ptrace_has_cap()
2020-01-18 13:51:39 +01:00
range.c
…
reboot.c
printk: Collapse shutdown types into a single dump reason
2020-05-30 10:34:03 -07:00
relay.c
mmap locking API: convert mmap_sem comments
2020-06-09 09:39:14 -07:00
resource.c
/dev/mem: Revoke mappings when a driver claims the region
2020-05-27 11:10:05 +02:00
rseq.c
rseq: Reject unknown flags on rseq unregister
2019-12-25 10:41:20 +01:00
scs.c
scs: Report SCS usage in bytes rather than number of entries
2020-06-04 16:14:56 +01:00
seccomp.c
sysctl: pass kernel pointers to ->proc_handler
2020-04-27 02:07:40 -04:00
signal.c
task_work: teach task_work_add() to do signal_wake_up()
2020-06-30 12:18:08 -06:00
smp.c
smp, irq_work: Continue smp_call_function*() and irq_work*() integration
2020-06-28 17:01:20 +02:00
smpboot.c
…
smpboot.h
…
softirq.c
lockdep: Remove lockdep_hardirq{s_enabled,_context}() argument
2020-07-10 12:00:02 +02:00
stackleak.c
…
stacktrace.c
stacktrace: Get rid of unneeded '!!' pattern
2019-11-11 10:30:59 +01:00
stop_machine.c
stop_machine: Make stop_cpus() static
2020-01-17 10:19:21 +01:00
sys_ni.c
y2038: allow disabling time32 system calls
2019-11-15 14:38:30 +01:00
sys.c
Add additional LSM hooks for SafeSetID
2020-06-14 11:39:31 -07:00
sysctl_binary.c
sysctl: Remove the sysctl system call
2019-11-26 13:03:56 -06:00
sysctl-test.c
kunit: allow kunit tests to be loaded as a module
2020-01-09 16:42:29 -07:00
sysctl.c
kernel/sysctl.c: ignore out-of-range taint bits introduced via kernel.tainted
2020-06-08 11:05:56 -07:00
task_work.c
task_work: teach task_work_add() to do signal_wake_up()
2020-06-30 12:18:08 -06:00
taskstats.c
taskstats: fix data-race
2019-12-04 15:18:39 +01:00
test_kprobes.c
…
torture.c
CPU (hotplug) updates:
2020-03-30 18:06:39 -07:00
tracepoint.c
The main changes in this release include:
2019-07-18 11:51:00 -07:00
tsacct.c
tsacct: add 64-bit btime field
2019-12-18 18:07:31 +01:00
ucount.c
ucount: Make sure ucounts in /proc/sys/user don't regress again
2020-04-07 21:51:27 +02:00
uid16.c
…
uid16.h
…
umh.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2020-05-15 13:48:59 -07:00
up.c
smp/up: Make smp_call_function_single() match SMP semantics
2020-02-07 15:34:12 +01:00
user_namespace.c
nsproxy: add struct nsset
2020-05-09 13:57:12 +02:00
user-return-notifier.c
…
user.c
user.c: make uidhash_table static
2020-06-04 19:06:24 -07:00
utsname_sysctl.c
sysctl: pass kernel pointers to ->proc_handler
2020-04-27 02:07:40 -04:00
utsname.c
nsproxy: add struct nsset
2020-05-09 13:57:12 +02:00
watch_queue.c
Notifications over pipes + Keyring notifications
2020-06-13 09:56:21 -07:00
watchdog_hld.c
…
watchdog.c
kernel/watchdog.c: convert {soft/hard}lockup boot parameters to sysctl aliases
2020-06-08 11:05:56 -07:00
workqueue_internal.h
…
workqueue.c
maccess: rename probe_kernel_{read,write} to copy_{from,to}_kernel_nofault
2020-06-17 10:57:41 -07:00