Yonghong Song de4e05cac4 bpf: Support bpf tracing/iter programs for BPF_LINK_CREATE ... Given a bpf program, the step to create an anonymous bpf iterator is: - create a bpf_iter_link, which combines bpf program and the target. In the future, there could be more information recorded in the link. A link_fd will be returned to the user space. - create an anonymous bpf iterator with the given link_fd. The bpf_iter_link can be pinned to bpffs mount file system to create a file based bpf iterator as well. The benefit to use of bpf_iter_link: - using bpf link simplifies design and implementation as bpf link is used for other tracing bpf programs. - for file based bpf iterator, bpf_iter_link provides a standard way to replace underlying bpf programs. - for both anonymous and free based iterators, bpf link query capability can be leveraged. The patch added support of tracing/iter programs for BPF_LINK_CREATE. A new link type BPF_LINK_TYPE_ITER is added to facilitate link querying. Currently, only prog_id is needed, so there is no additional in-kernel show_fdinfo() and fill_link_info() hook is needed for BPF_LINK_TYPE_ITER link. Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/20200509175901.2475084-1-yhs@fb.com		2020-05-09 17:05:26 -07:00
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bpf	bpf: Support bpf tracing/iter programs for BPF_LINK_CREATE	2020-05-09 17:05:26 -07:00
cgroup	bpf: Refactor bpf_link update handling	2020-04-28 17:27:07 -07:00
configs	compiler: remove CONFIG_OPTIMIZE_INLINING entirely	2020-04-07 10:43:42 -07:00
debug	SPDX patches for 5.7-rc1.	2020-04-03 13:12:26 -07:00
dma	dma-debug: fix displaying of dma allocation type	2020-04-08 21:46:57 +02:00
events	Merge branch 'work.sysctl' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2020-04-28 21:23:38 +02:00
gcov	kernel/gcov/fs.c: gcov_seq_next() should increase position index	2020-04-10 15:36:22 -07:00
irq	genirq: Remove setup_irq() and remove_irq()	2020-04-14 10:08:50 +02:00
livepatch	…
locking	locking/lockdep: Improve 'invalid wait context' splat	2020-04-08 12:05:07 +02:00
power	PM / sleep: handle the compat case in snapshot_set_swap_area()	2020-04-06 21:42:36 +02:00
printk	sysctl: pass kernel pointers to ->proc_handler	2020-04-27 02:07:40 -04:00
rcu	Merge branch 'urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/urgent	2020-04-14 08:36:41 +02:00
sched	Merge branch 'work.sysctl' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2020-04-28 21:23:38 +02:00
time	Merge branch 'work.sysctl' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2020-04-28 21:23:38 +02:00
trace	Merge branch 'work.sysctl' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2020-04-28 21:23:38 +02:00
.gitignore	.gitignore: add SPDX License Identifier	2020-03-25 11:50:48 +01:00
Kconfig.freezer	…
Kconfig.hz	…
Kconfig.locks	…
Kconfig.preempt	…
Makefile	kcov: ignore fault-inject and stacktrace	2020-01-31 10:30:41 -08:00
acct.c	…
async.c	…
audit.c	audit: check the length of userspace generated audit records	2020-04-20 17:10:58 -04:00
audit.h	audit: trigger accompanying records when no rules present	2020-03-12 10:42:51 -04:00
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
auditfilter.c	audit: fix error handling in audit_data_to_entry()	2020-02-22 20:36:47 -05:00
auditsc.c	audit: trigger accompanying records when no rules present	2020-03-12 10:42:51 -04:00
backtracetest.c	…
bounds.c	…
capability.c	…
compat.c	y2038: remove unused time32 interfaces	2020-02-21 11:22:15 -08:00
configs.c	proc: convert everything to "struct proc_ops"	2020-02-04 03:05:26 +00:00
context_tracking.c	context-tracking: Introduce CONFIG_HAVE_TIF_NOHZ	2020-02-14 16:05:04 +01:00
cpu.c	CPU (hotplug) updates:	2020-03-30 18:06:39 -07:00
cpu_pm.c	…
crash_core.c	…
crash_dump.c	…
cred.c	kernel: doc: remove outdated comment cred.c	2020-03-25 10:04:01 -05:00
delayacct.c	…
dma.c	…
elfcore.c	…
exec_domain.c	…
exit.c	proc: Put thread_pid in release_task not proc_flush_pid	2020-04-24 15:49:00 -05:00
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	clone3: add build-time CLONE_ARGS_SIZE_VER* validity checks	2020-04-15 09:56:32 +02:00
freezer.c	…
futex.c	Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2020-03-30 16:17:15 -07:00
gen_kheaders.sh	…
groups.c	…
hung_task.c	…
iomem.c	…
irq_work.c	lockdep: Annotate irq_work	2020-03-21 16:00:24 +01:00
jump_label.c	…
kallsyms.c	kallsyms: unexport kallsyms_lookup_name() and kallsyms_on_each_symbol()	2020-04-07 10:43:44 -07:00
kcmp.c	kernel/kcmp.c: Use new infrastructure to fix deadlocks in execve	2020-03-25 10:04:01 -05:00
kcov.c	…
kexec.c	…
kexec_core.c	…
kexec_elf.c	…
kexec_file.c	…
kexec_internal.h	…
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	sysctl: pass kernel pointers to ->proc_handler	2020-04-27 02:07:40 -04:00
ksysfs.c	…
kthread.c	kthread: Do not preempt current task if it is going to call schedule()	2020-03-20 13:06:20 +01:00
latencytop.c	sysctl: pass kernel pointers to ->proc_handler	2020-04-27 02:07:40 -04:00
module-internal.h	…
module.c	kernel/module: Hide vermagic header file from general use	2020-04-21 13:27:37 -07:00
module_signature.c	…
module_signing.c	…
notifier.c	x86/mm: split vmalloc_sync_all()	2020-03-21 18:56:06 -07:00
nsproxy.c	…
padata.c	crypto: pcrypt - simplify error handling in pcrypt_create_aead()	2020-03-06 12:28:24 +11:00
panic.c	…
params.c	…
pid.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2020-04-10 12:59:56 -07:00
pid_namespace.c	sysctl: pass kernel pointers to ->proc_handler	2020-04-27 02:07:40 -04:00
profile.c	proc: convert everything to "struct proc_ops"	2020-02-04 03:05:26 +00:00
ptrace.c	…
range.c	…
reboot.c	…
relay.c	…
resource.c	…
rseq.c	…
seccomp.c	sysctl: pass kernel pointers to ->proc_handler	2020-04-27 02:07:40 -04:00
signal.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2020-04-23 13:30:18 -07:00
smp.c	cpu/hotplug: Move bringup of secondary CPUs out of smp_init()	2020-03-25 12:59:37 +01:00
smpboot.c	…
smpboot.h	…
softirq.c	lockdep: Rename trace_{hard,soft}{irq_context,irqs_enabled}()	2020-03-21 16:03:54 +01:00
stackleak.c	…
stacktrace.c	…
stop_machine.c	…
sys.c	sys/sysinfo: Respect boottime inside time namespace	2020-03-03 19:34:32 +01:00
sys_ni.c	…
sysctl-test.c	…
sysctl.c	sysctl: Fix unused function warning	2020-05-05 11:59:32 -07:00
sysctl_binary.c	…
task_work.c	task_work_run: don't take ->pi_lock unconditionally	2020-03-02 14:06:33 -07:00
taskstats.c	…
test_kprobes.c	…
torture.c	CPU (hotplug) updates:	2020-03-30 18:06:39 -07:00
tracepoint.c	…
tsacct.c	…
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	sysctl: pass kernel pointers to ->proc_handler	2020-04-27 02:07:40 -04:00
up.c	smp/up: Make smp_call_function_single() match SMP semantics	2020-02-07 15:34:12 +01:00
user-return-notifier.c	…
user.c	…
user_namespace.c	…
utsname.c	…
utsname_sysctl.c	sysctl: pass kernel pointers to ->proc_handler	2020-04-27 02:07:40 -04:00
watchdog.c	sysctl: pass kernel pointers to ->proc_handler	2020-04-27 02:07:40 -04:00
watchdog_hld.c	…
workqueue.c	workqueue: Remove the warning in wq_worker_sleeping()	2020-04-08 11:35:20 +02:00
workqueue_internal.h	…