Merge branch 'bpf-perf'

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Alexei Starovoitov says:

====================
bpf_perf_event_output helper

Over the last year there were multiple attempts to let eBPF programs
output data into perf events by He Kuang and Wangnan.
The last one was:
https://lkml.org/lkml/2015/7/20/736
It was almost perfect with exception that all bpf programs would sent
data into one global perf_event.
This patch set takes different approach by letting user space
open independent PERF_COUNT_SW_BPF_OUTPUT events, so that program
output won't collide.

Wangnan is working on corresponding perf patches.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

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This commit is contained in:

David S. Miller 2015-10-22 06:42:23 -07:00

parent 63b11e757d 39111695b1

commit 721daebbdb

10 changed files with 308 additions and 6 deletions

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11

include/uapi/linux/bpf.h

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1

include/uapi/linux/perf_event.h

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2

kernel/bpf/arraymap.c

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3

kernel/bpf/verifier.c

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15

kernel/events/core.c

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46

kernel/trace/bpf_trace.c

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7

samples/bpf/Makefile

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2

samples/bpf/bpf_helpers.h

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31

samples/bpf/trace_output_kern.c

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196

samples/bpf/trace_output_user.c

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