Alexei Starovoitov a43eec3042 bpf: introduce bpf_perf_event_output() helper ... This helper is used to send raw data from eBPF program into special PERF_TYPE_SOFTWARE/PERF_COUNT_SW_BPF_OUTPUT perf_event. User space needs to perf_event_open() it (either for one or all cpus) and store FD into perf_event_array (similar to bpf_perf_event_read() helper) before eBPF program can send data into it. Today the programs triggered by kprobe collect the data and either store it into the maps or print it via bpf_trace_printk() where latter is the debug facility and not suitable to stream the data. This new helper replaces such bpf_trace_printk() usage and allows programs to have dedicated channel into user space for post-processing of the raw data collected. Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>		2015-10-22 06:42:15 -07:00
..
bpf	bpf: introduce bpf_perf_event_output() helper	2015-10-22 06:42:15 -07:00
configs
debug
events	perf: pad raw data samples automatically	2015-10-22 06:42:13 -07:00
gcov
irq	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-10-20 06:08:27 -07:00
livepatch
locking	locking/lockdep: Fix hlock->pin_count reset on lock stack rebuilds	2015-09-23 09:48:53 +02:00
power	Merge branch 'for-4.3/core' of git://git.kernel.dk/linux-block	2015-09-02 13:10:25 -07:00
printk	kexec: split kexec_load syscall from kexec core code	2015-09-10 13:29:01 -07:00
rcu	rcu: Suppress lockdep false positive for rcp->exp_funnel_mutex	2015-09-20 21:01:22 -07:00
sched	sched/core: Fix TASK_DEAD race in finish_task_switch()	2015-10-06 17:05:17 +02:00
time	timekeeping: Increment clock_was_set_seq in timekeeping_init()	2015-10-16 15:50:22 +02:00
trace	bpf: introduce bpf_perf_event_output() helper	2015-10-22 06:42:15 -07:00
.gitignore
acct.c
async.c
audit_fsnotify.c
audit_tree.c	Merge branch 'upstream' of git://git.infradead.org/users/pcmoore/audit	2015-09-08 13:34:59 -07:00
audit_watch.c	Merge branch 'upstream' of git://git.infradead.org/users/pcmoore/audit	2015-09-08 13:34:59 -07:00
audit.c	Merge branch 'upstream' of git://git.infradead.org/users/pcmoore/audit	2015-09-08 13:34:59 -07:00
audit.h	Merge branch 'upstream' of git://git.infradead.org/users/pcmoore/audit	2015-09-08 13:34:59 -07:00
auditfilter.c
auditsc.c	Merge branch 'upstream' of git://git.infradead.org/users/pcmoore/audit	2015-09-08 13:34:59 -07:00
backtracetest.c
bounds.c
capability.c
cgroup_freezer.c
cgroup_pids.c
cgroup.c	Revert "sched, cgroup: replace signal_struct->group_rwsem with a global percpu_rwsem"	2015-09-16 11:51:12 -04:00
compat.c
configs.c
context_tracking.c
cpu_pm.c	kernel/cpu_pm: fix cpu_cluster_pm_exit comment	2015-09-03 02:42:20 +02:00
cpu.c
cpuset.c
crash_dump.c
cred.c	kernel/cred.c: remove unnecessary kdebug atomic reads	2015-09-10 13:29:01 -07:00
delayacct.c
dma.c
elfcore.c
exec_domain.c
exit.c
extable.c	kernel/extable.c: remove duplicated include	2015-09-10 13:29:01 -07:00
fork.c	Revert "sched, cgroup: replace signal_struct->group_rwsem with a global percpu_rwsem"	2015-09-16 11:51:12 -04:00
freezer.c
futex_compat.c
futex.c
groups.c
hung_task.c
irq_work.c
jump_label.c
kallsyms.c
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kexec_core.c	kexec: export KERNEL_IMAGE_SIZE to vmcoreinfo	2015-09-10 13:29:01 -07:00
kexec_file.c	kexec: split kexec_file syscall code to kexec_file.c	2015-09-10 13:29:01 -07:00
kexec_internal.h	kexec: split kexec_file syscall code to kexec_file.c	2015-09-10 13:29:01 -07:00
kexec.c	kexec: split kexec_load syscall from kexec core code	2015-09-10 13:29:01 -07:00
kmod.c	kmod: handle UMH_WAIT_PROC from system unbound workqueue	2015-09-10 13:29:01 -07:00
kprobes.c
ksysfs.c	kexec: split kexec_load syscall from kexec core code	2015-09-10 13:29:01 -07:00
kthread.c	kernel/kthread.c:kthread_create_on_node(): clarify documentation	2015-09-04 16:54:41 -07:00
latencytop.c
Makefile	sys_membarrier(): system-wide memory barrier (generic, x86)	2015-09-11 15:21:34 -07:00
membarrier.c	sys_membarrier(): system-wide memory barrier (generic, x86)	2015-09-11 15:21:34 -07:00
memremap.c
module_signing.c
module-internal.h
module.c
notifier.c
nsproxy.c
padata.c
panic.c
params.c
pid_namespace.c
pid.c
profile.c	mm: rename alloc_pages_exact_node() to __alloc_pages_node()	2015-09-08 15:35:28 -07:00
ptrace.c
range.c
reboot.c	kexec: split kexec_load syscall from kexec core code	2015-09-10 13:29:01 -07:00
relay.c
resource.c
seccomp.c	bpf, seccomp: prepare for upcoming criu support	2015-10-05 06:47:05 -07:00
signal.c
smp.c
smpboot.c	smpboot: allow passing the cpumask on per-cpu thread registration	2015-09-04 16:54:41 -07:00
smpboot.h
softirq.c
stacktrace.c
stop_machine.c
sys_ni.c	sys_membarrier(): system-wide memory barrier (generic, x86)	2015-09-11 15:21:34 -07:00
sys.c
sysctl_binary.c
sysctl.c	bpf: enable non-root eBPF programs	2015-10-12 19:13:35 -07:00
task_work.c	task_work: remove fifo ordering guarantee	2015-09-05 13:46:58 -07:00
taskstats.c
test_kprobes.c
torture.c
tracepoint.c
tsacct.c
uid16.c
up.c
user_namespace.c	capabilities: ambient capabilities	2015-09-04 16:54:41 -07:00
user-return-notifier.c
user.c
utsname_sysctl.c
utsname.c
watchdog.c	watchdog: rename watchdog_suspend() and watchdog_resume()	2015-09-04 16:54:41 -07:00
workqueue_internal.h
workqueue.c	workqueue: make sure delayed work run in local cpu	2015-09-30 13:06:46 -04:00