Yonghong Song d6c4503cc2 bpf: Implement bpf iterator for hash maps ... The bpf iterators for hash, percpu hash, lru hash and lru percpu hash are implemented. During link time, bpf_iter_reg->check_target() will check map type and ensure the program access key/value region is within the map defined key/value size limit. For percpu hash and lru hash maps, the bpf program will receive values for all cpus. The map element bpf iterator infrastructure will prepare value properly before passing the value pointer to the bpf program. This patch set supports readonly map keys and read/write map values. It does not support deleting map elements, e.g., from hash tables. If there is a user case for this, the following mechanism can be used to support map deletion for hashtab, etc. - permit a new bpf program return value, e.g., 2, to let bpf iterator know the map element should be removed. - since bucket lock is taken, the map element will be queued. - once bucket lock is released after all elements under this bucket are traversed, all to-be-deleted map elements can be deleted. Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200723184114.590470-1-yhs@fb.com		2020-07-25 20:16:33 -07:00
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bpf	bpf: Implement bpf iterator for hash maps	2020-07-25 20:16:33 -07:00
cgroup	cgroup: fix cgroup_sk_alloc() for sk_clone_lock()	2020-07-07 13:34:11 -07:00
configs
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 git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-07-25 17:49:04 -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: Support distinguishing volatile accesses	2020-06-11 20:04:01 +02:00
livepatch
locking	The X86 entry, exception and interrupt code rework	2020-06-13 10:05:47 -07:00
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: Warn if garbage is passed to default_wake_function()	2020-07-24 14:40:25 +02:00
time	timer: Fix wheel index calculation on last level	2020-07-17 21:44:05 +02:00
trace	bpf: Use dedicated bpf_trace_printk event instead of trace_printk()	2020-07-13 16:55:49 -07:00
.gitignore
acct.c	mmap locking API: convert mmap_sem comments	2020-06-09 09:39:14 -07:00
async.c
audit_fsnotify.c
audit_tree.c
audit_watch.c
audit.c	audit/stable-5.8 PR 20200601	2020-06-02 17:13:37 -07:00
audit.h
auditfilter.c
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
configs.c
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
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
exec_domain.c
exit.c	umd: Remove exit_umh	2020-07-07 11:58:59 -05:00
extable.c
fail_function.c
fork.c	Merge branch 'usermode-driver-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace into bpf-next	2020-07-14 12:18:01 -07:00
freezer.c
futex.c	mmap locking API: use coccinelle to convert mmap_sem rwsem call sites	2020-06-09 09:39:14 -07:00
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
irq_work.c	irq_work, smp: Allow irq_work on call_single_queue	2020-05-28 10:54:15 +02:00
jump_label.c
kallsyms.c	kallsyms: Refactor kallsyms_show_value() to take cred	2020-07-08 15:59:57 -07:00
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kcov.c	kcov: check kcov_softirq in kcov_remote_stop()	2020-06-10 19:14:17 -07:00
kexec_core.c
kexec_elf.c
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.c
kheaders.c
kmod.c
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
Makefile	umh: Separate the user mode driver and the user mode helper support	2020-07-04 09:34:32 -05:00
module_signature.c
module_signing.c
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
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
profile.c
ptrace.c
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
scs.c	scs: Report SCS usage in bytes rather than number of entries	2020-06-04 16:14:56 +01:00
seccomp.c
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	x86/entry: Clarify irq_{enter,exit}_rcu()	2020-06-11 15:15:24 +02:00
stackleak.c
stacktrace.c
stop_machine.c
sys_ni.c
sys.c	Add additional LSM hooks for SafeSetID	2020-06-14 11:39:31 -07:00
sysctl_binary.c
sysctl-test.c
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
test_kprobes.c
torture.c
tracepoint.c
tsacct.c
ucount.c
uid16.c
uid16.h
umh.c	umh: Stop calling do_execve_file	2020-07-04 09:35:36 -05:00
up.c
user_namespace.c
user-return-notifier.c
user.c	user.c: make uidhash_table static	2020-06-04 19:06:24 -07:00
usermode_driver.c	umd: Stop using split_argv	2020-07-07 11:58:59 -05:00
utsname_sysctl.c
utsname.c
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