threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
39 lines
924 B
C
39 lines
924 B
C
/* Copyright 2016 Netflix, Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of version 2 of the GNU General Public
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* License as published by the Free Software Foundation.
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*/
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#include <linux/version.h>
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#include <linux/ptrace.h>
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#include <uapi/linux/bpf.h>
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#include <uapi/linux/bpf_perf_event.h>
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#include "bpf_helpers.h"
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#define MAX_IPS 8192
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struct bpf_map_def SEC("maps") ip_map = {
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.type = BPF_MAP_TYPE_HASH,
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.key_size = sizeof(u64),
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.value_size = sizeof(u32),
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.max_entries = MAX_IPS,
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};
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SEC("perf_event")
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int do_sample(struct bpf_perf_event_data *ctx)
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{
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u64 ip;
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u32 *value, init_val = 1;
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ip = PT_REGS_IP(&ctx->regs);
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value = bpf_map_lookup_elem(&ip_map, &ip);
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if (value)
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*value += 1;
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else
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/* E2BIG not tested for this example only */
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bpf_map_update_elem(&ip_map, &ip, &init_val, BPF_NOEXIST);
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return 0;
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}
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char _license[] SEC("license") = "GPL";
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