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https://github.com/Qortal/Brooklyn.git
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a94b3d14aa
Changes included (and more): 1. Dynamic RAM merge 2. Real-time page scan and allocation 3. Cache compression 4. Real-time IRQ checks 5. Dynamic I/O allocation for Java heap 6. Java page migration 7. Contiguous memory allocation 8. Idle pages tracking 9. Per CPU RAM usage tracking 10. ARM NEON scalar multiplication library 11. NEON/ARMv8 crypto extensions 12. NEON SHA, Blake, RIPEMD crypto extensions 13. Parallel NEON crypto engine for multi-algo based CPU stress reduction
35 lines
744 B
C
35 lines
744 B
C
// SPDX-License-Identifier: GPL-2.0
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// Copyright (c) 2020 Facebook
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#include <linux/bpf.h>
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#include <stdint.h>
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#include <bpf/bpf_helpers.h>
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#include "bpf_misc.h"
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char _license[] SEC("license") = "GPL";
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struct {
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__uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
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__uint(value_size, sizeof(int));
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__uint(key_size, sizeof(int));
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} perfbuf SEC(".maps");
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const volatile int batch_cnt = 0;
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long sample_val = 42;
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long dropped __attribute__((aligned(128))) = 0;
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SEC("fentry/" SYS_PREFIX "sys_getpgid")
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int bench_perfbuf(void *ctx)
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{
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__u64 *sample;
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int i;
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for (i = 0; i < batch_cnt; i++) {
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if (bpf_perf_event_output(ctx, &perfbuf, BPF_F_CURRENT_CPU,
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&sample_val, sizeof(sample_val)))
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__sync_add_and_fetch(&dropped, 1);
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}
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return 0;
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}
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