657482041f
This adds an example BPF program with a ring buffer. The program using the ring buffer is limited to kernel versions 5.8 and above (the same as the ringbuffer internally). The program is marked critical to ensure that the platform can support ringbuffers in the bpfloader. This is only done for userdebug builds currently since tests that use it can only be run in userdebug builds and statically allocates a 4KB ring buffer. Bug: 246985031 Test: build and flash on 4.19 and 5.10 Change-Id: I3cdb4a03051f832915bb784d43c01392c087f54c
69 lines
1.6 KiB
Text
69 lines
1.6 KiB
Text
//
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// Copyright (C) 2018 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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//
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// bpfLoad binary
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//
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package {
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// http://go/android-license-faq
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// A large-scale-change added 'default_applicable_licenses' to import
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// the below license kinds from "system_bpf_license":
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// SPDX-license-identifier-Apache-2.0
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default_applicable_licenses: ["system_bpf_license"],
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}
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cc_binary {
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name: "bpfloader",
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defaults: ["bpf_defaults"],
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cflags: [
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"-Wall",
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"-Werror",
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"-Wthread-safety",
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],
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sanitize: {
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integer_overflow: true,
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memtag_heap: true,
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},
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header_libs: ["bpf_headers"],
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shared_libs: [
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"libcutils",
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"libbpf_android",
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"libbase",
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"liblog",
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"libnetdutils",
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"libbpf_bcc",
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],
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srcs: [
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"BpfLoader.cpp",
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],
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init_rc: ["bpfloader.rc"],
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required: [
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"btfloader",
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"timeInState.o"
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],
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product_variables: {
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debuggable: {
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required: [
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"bpfRingbufProg.o",
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],
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},
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}
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}
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