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
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Makefile	ebpf: remove kernel test stubs	2015-03-01 14:05:18 -05:00
arraymap.c	bpf: introduce bpf_perf_event_output() helper	2015-10-22 06:42:15 -07:00
core.c	bpf: split state from prandom_u32() and consolidate {c, e}BPF prngs	2015-10-08 05:26:39 -07:00
hashtab.c	bpf: charge user for creation of BPF maps and programs	2015-10-12 19:13:36 -07:00
helpers.c	bpf: split state from prandom_u32() and consolidate {c, e}BPF prngs	2015-10-08 05:26:39 -07:00
syscall.c	bpf: Need to call bpf_prog_uncharge_memlock from bpf_prog_put	2015-10-16 00:55:02 -07:00
verifier.c	bpf: introduce bpf_perf_event_output() helper	2015-10-22 06:42:15 -07:00