Yonghong Song bf6fa2c893 bpf: implement bpf_get_current_cgroup_id() helper ... bpf has been used extensively for tracing. For example, bcc contains an almost full set of bpf-based tools to trace kernel and user functions/events. Most tracing tools are currently either filtered based on pid or system-wide. Containers have been used quite extensively in industry and cgroup is often used together to provide resource isolation and protection. Several processes may run inside the same container. It is often desirable to get container-level tracing results as well, e.g. syscall count, function count, I/O activity, etc. This patch implements a new helper, bpf_get_current_cgroup_id(), which will return cgroup id based on the cgroup within which the current task is running. The later patch will provide an example to show that userspace can get the same cgroup id so it could configure a filter or policy in the bpf program based on task cgroup id. The helper is currently implemented for tracing. It can be added to other program types as well when needed. Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>		2018-06-03 18:22:41 -07:00
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blktrace.c	blktrace: fix trace mutex deadlock	2017-11-27 12:03:58 -07:00
bpf_trace.c	bpf: implement bpf_get_current_cgroup_id() helper	2018-06-03 18:22:41 -07:00
ftrace.c	ftrace: Have set_graph_* files have normal file modes	2018-05-03 11:55:31 -04:00
Kconfig	tracing: Add inter-event blurb to HIST_TRIGGERS config option	2018-03-10 16:06:05 -05:00
Makefile	Tracing updates for 4.15:	2017-11-17 14:58:01 -08:00
power-traces.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
ring_buffer_benchmark.c	ring-buffer: Have ring_buffer_alloc_read_page() return error on offline CPU	2017-08-02 14:23:02 -04:00
ring_buffer.c	ring-buffer: Add set/clear_current_oom_origin() during allocations	2018-04-06 08:56:52 -04:00
rpm-traces.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
trace_benchmark.c	trace: Eliminate cond_resched_rcu_qs() in favor of cond_resched()	2017-12-04 10:28:58 -08:00
trace_benchmark.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
trace_branch.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
trace_clock.c	tracing: Hide global trace clock from lockdep	2018-04-06 08:56:52 -04:00
trace_entries.h	tracing: Fix missing tab for hwlat_detector print format	2018-04-25 10:28:46 -04:00
trace_event_perf.c	perf/core: Fix perf_uprobe_init()	2018-04-10 07:33:10 +02:00
trace_events_filter_test.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
trace_events_filter.c	tracing: Fix regex_match_front() to not over compare the test string	2018-05-11 10:56:42 -04:00
trace_events_hist.c	tracing: Add field modifier parsing hist error for hist triggers	2018-04-26 21:39:58 -04:00
trace_events_trigger.c	tracing: Add variable reference handling to hist triggers	2018-03-10 16:05:58 -05:00
trace_events.c	tracing: Make sure the parsed string always terminates with '\0'	2018-01-23 15:57:28 -05:00
trace_export.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
trace_functions_graph.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
trace_functions.c	tracing: Update stack trace skipping for ORC unwinder	2018-01-23 15:57:00 -05:00
trace_hwlat.c	trace: make trace_hwlat timestamp y2038 safe	2017-05-08 17:15:15 -07:00
trace_irqsoff.c	tracing: Add support for preempt and irq enable/disable events	2017-10-10 18:58:43 -04:00
trace_kdb.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
trace_kprobe.c	bpf: introduce bpf subcommand BPF_TASK_FD_QUERY	2018-05-24 18:18:19 -07:00
trace_mmiotrace.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
trace_nop.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
trace_output.c	sched/debug: Rename task-state printing helpers	2017-10-10 11:43:29 +02:00
trace_output.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
trace_printk.c	treewide: Align function definition open/close braces	2018-03-26 11:13:09 +02:00
trace_probe.c	tracing: probeevent: Fix to support minus offset from symbol	2018-03-23 12:02:37 -04:00
trace_probe.h	Merge branch 'perf/urgent' into perf/core	2018-03-29 16:03:48 +02:00
trace_sched_switch.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
trace_sched_wakeup.c	Merge branch 'linus' into sched/core, to pick up fixes	2017-11-08 10:17:15 +01:00
trace_selftest_dynamic.c	ftrace: Mark function tracer test functions noinline/noclone	2018-01-23 15:57:29 -05:00
trace_selftest.c	Tracing updates for 4.15:	2017-11-17 14:58:01 -08:00
trace_seq.c
trace_stack.c	tracing: Fix the file mode of stack tracer	2018-05-03 11:58:05 -04:00
trace_stat.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
trace_stat.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
trace_syscalls.c	Tracing updates for 4.15:	2017-11-17 14:58:01 -08:00
trace_uprobe.c	bpf: introduce bpf subcommand BPF_TASK_FD_QUERY	2018-05-24 18:18:19 -07:00
trace.c	Revert: Unify CLOCK_MONOTONIC and CLOCK_BOOTTIME	2018-04-26 14:53:32 +02:00
trace.h	tracing: Rewrite filter logic to be simpler and faster	2018-03-14 12:35:39 -04:00
tracing_map.c	tracing: Add per-element variable support to tracing_map	2018-03-10 16:05:53 -05:00
tracing_map.h	tracing: Add per-element variable support to tracing_map	2018-03-10 16:05:53 -05:00