Namhyung Kim 96aaab6865 perf/core: Add PERF_RECORD_CGROUP event ... To support cgroup tracking, add CGROUP event to save a link between cgroup path and id number. This is needed since cgroups can go away when userspace tries to read the cgroup info (from the id) later. The attr.cgroup bit was also added to enable cgroup tracking from userspace. This event will be generated when a new cgroup becomes active. Userspace might need to synthesize those events for existing cgroups. Committer testing: From the resulting kernel, using /sys/kernel/btf/vmlinux: $ pahole perf_event_attr | grep -w cgroup -B5 -A1 __u64 write_backward:1; /* 40:27 8 */ __u64 namespaces:1; /* 40:28 8 */ __u64 ksymbol:1; /* 40:29 8 */ __u64 bpf_event:1; /* 40:30 8 */ __u64 aux_output:1; /* 40:31 8 */ __u64 cgroup:1; /* 40:32 8 */ __u64 __reserved_1:31; /* 40:33 8 */ $ Reported-by: kbuild test robot <lkp@intel.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Tejun Heo <tj@kernel.org> [staticize perf_event_cgroup function] Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Zefan Li <lizefan@huawei.com> Link: http://lore.kernel.org/lkml/20200325124536.2800725-2-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>		2020-03-27 10:39:11 -03:00
..
bpf	bpf: Fix a potential deadlock with bpf_map_do_batch	2020-02-19 16:01:25 -08:00
cgroup	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-03-12 16:19:19 -07:00
configs
debug	Revert "kdb: Get rid of confusing diag msg from "rd" if current task has no regs"	2020-02-06 11:40:09 +00:00
dma	dma-direct: improve DMA mask overflow reporting	2020-02-05 18:53:41 +01:00
events	perf/core: Add PERF_RECORD_CGROUP event	2020-03-27 10:39:11 -03:00
gcov	Revert "um: Enable CONFIG_CONSTRUCTORS"	2020-01-19 22:42:06 +01:00
irq	genirq/proc: Reject invalid affinity masks (again)	2020-02-14 09:43:17 +01:00
livepatch	New tracing features:	2019-11-27 11:42:01 -08:00
locking	proc: convert everything to "struct proc_ops"	2020-02-04 03:05:26 +00:00
power	PM / hibernate: fix typo "reserverd_size" -> "reserved_size"	2020-02-20 11:58:01 +01:00
printk	printk: fix exclusive_console replaying	2020-01-02 16:15:04 +01:00
rcu	rcu: Forgive slow expedited grace periods at boot time	2020-01-25 12:00:40 -08:00
sched	sched/fair: Fix statistics for find_idlest_group()	2020-02-27 10:08:27 +01:00
time	y2038: remove unused time32 interfaces	2020-02-21 11:22:15 -08:00
trace	Have ftrace lookup_rec() return a consistent record otherwise it	2020-03-11 09:54:59 -07:00
.gitignore
acct.c	acct: stop using get_seconds()	2019-12-18 18:07:31 +01:00
async.c
audit_fsnotify.c
audit_tree.c
audit_watch.c	audit_get_nd(): don't unlock parent too early	2019-11-10 11:56:55 -05:00
audit.c	audit: always check the netlink payload length in audit_receive_msg()	2020-02-24 16:38:57 -05:00
audit.h
auditfilter.c	audit: fix error handling in audit_data_to_entry()	2020-02-22 20:36:47 -05:00
auditsc.c	Revert "bpf: Emit audit messages upon successful prog load and unload"	2019-11-23 09:56:02 -08:00
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: Rename context_tracking_is_enabled() => context_tracking_enabled()	2019-10-29 10:01:12 +01:00
cpu_pm.c
cpu.c	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2020-01-28 10:07:09 -08:00
crash_core.c
crash_dump.c
cred.c	Merge branch 'dhowells' (patches from DavidH)	2020-01-14 09:56:31 -08:00
delayacct.c
dma.c
elfcore.c
exec_domain.c
exit.c	exit: Fix Sparse errors and warnings	2020-02-28 13:34:39 +01:00
extable.c	bpf: Allow to resolve bpf trampoline and dispatcher in unwind	2020-01-25 07:12:40 -08:00
fail_function.c
fork.c	fork: Use RCU_INIT_POINTER() instead of rcu_access_pointer()	2020-02-28 13:34:36 +01:00
freezer.c
futex.c	futex: Unbreak futex hashing	2020-03-09 22:33:09 +01:00
gen_kheaders.sh	kheaders: explain why include/config/autoconf.h is excluded from md5sum	2019-11-11 20:10:01 +09:00
groups.c
hung_task.c
iomem.c
irq_work.c	irq_work: Fix IRQ_WORK_BUSY bit clearing	2019-11-15 10:48:37 +01:00
jump_label.c
kallsyms.c	Kbuild updates for v5.6 (2nd)	2020-02-09 16:05:50 -08:00
kcmp.c
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: remote coverage support	2019-12-04 19:44:14 -08:00
kexec_core.c	kexec: add machine_kexec_post_load()	2020-01-08 16:32:55 +00:00
kexec_elf.c
kexec_file.c	kexec: add machine_kexec_post_load()	2020-01-08 16:32:55 +00:00
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
kprobes.c	kprobes: Fix optimize_kprobe()/unoptimize_kprobe() cancellation logic	2020-01-09 12:40:13 +01:00
ksysfs.c
kthread.c	kthread: make __kthread_queue_delayed_work static	2019-10-16 09:20:58 -07:00
latencytop.c	proc: convert everything to "struct proc_ops"	2020-02-04 03:05:26 +00:00
Makefile	kcov: ignore fault-inject and stacktrace	2020-01-31 10:30:41 -08:00
module_signature.c
module_signing.c
module-internal.h
module.c	proc: convert everything to "struct proc_ops"	2020-02-04 03:05:26 +00:00
notifier.c	kernel/notifier.c: remove blocking_notifier_chain_cond_register()	2019-12-04 19:44:12 -08:00
nsproxy.c	ns: Introduce Time Namespace	2020-01-14 12:20:48 +01:00
padata.c	padata: update documentation	2019-12-11 16:37:02 +08:00
panic.c	locking/refcount: Remove unused 'refcount_error_report()' function	2019-11-25 09:15:42 +01:00
params.c
pid_namespace.c	fork: extend clone3() to support setting a PID	2019-11-15 23:49:22 +01:00
pid.c	pid: make ENOMEM return value more obvious	2020-03-09 23:40:05 +01:00
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
relay.c
resource.c
rseq.c	rseq: Reject unknown flags on rseq unregister	2019-12-25 10:41:20 +01:00
seccomp.c	seccomp: Check that seccomp_notif is zeroed out by the user	2020-01-02 13:03:45 -08:00
signal.c	signal: avoid double atomic counter increments for user accounting	2020-02-26 09:54:03 -08:00
smp.c	smp: Remove superfluous cond_func check in smp_call_function_many_cond()	2020-01-28 15:43:00 +01:00
smpboot.c
smpboot.h
softirq.c
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	sys/sysinfo: Respect boottime inside time namespace	2020-03-03 19:34:32 +01:00
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	s390: remove obsolete ieee_emulation_warnings	2020-02-19 13:51:46 +01:00
task_work.c
taskstats.c	taskstats: fix data-race	2019-12-04 15:18:39 +01:00
test_kprobes.c
torture.c
tracepoint.c
tsacct.c	tsacct: add 64-bit btime field	2019-12-18 18:07:31 +01:00
ucount.c
uid16.c
uid16.h
umh.c
up.c	smp/up: Make smp_call_function_single() match SMP semantics	2020-02-07 15:34:12 +01:00
user_namespace.c
user-return-notifier.c
user.c
utsname_sysctl.c
utsname.c
watchdog_hld.c
watchdog.c	watchdog/softlockup: Enforce that timestamp is valid on boot	2020-01-17 11:19:22 +01:00
workqueue_internal.h
workqueue.c	workqueue: don't use wq_select_unbound_cpu() for bound works	2020-03-10 10:30:51 -04:00