forked from Minki/linux
7cf245a37e
Fix all files in samples/bpf to include libbpf header files with the bpf/
prefix, to be consistent with external users of the library. Also ensure
that all includes of exported libbpf header files (those that are exported
on 'make install' of the library) use bracketed includes instead of quoted.
To make sure no new files are introduced that doesn't include the bpf/
prefix in its include, remove tools/lib/bpf from the include path entirely,
and use tools/lib instead.
Fixes: 6910d7d386 ("selftests/bpf: Ensure bpf_helper_defs.h are taken from selftests dir")
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/157952560911.1683545.8795966751309534150.stgit@toke.dk
68 lines
1.5 KiB
C
68 lines
1.5 KiB
C
#include <linux/ptrace.h>
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#include <linux/version.h>
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#include <uapi/linux/bpf.h>
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#include <bpf/bpf_helpers.h>
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struct bpf_map_def SEC("maps") counters = {
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.type = BPF_MAP_TYPE_PERF_EVENT_ARRAY,
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.key_size = sizeof(int),
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.value_size = sizeof(u32),
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.max_entries = 64,
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};
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struct bpf_map_def SEC("maps") values = {
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.type = BPF_MAP_TYPE_HASH,
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.key_size = sizeof(int),
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.value_size = sizeof(u64),
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.max_entries = 64,
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};
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struct bpf_map_def SEC("maps") values2 = {
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.type = BPF_MAP_TYPE_HASH,
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.key_size = sizeof(int),
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.value_size = sizeof(struct bpf_perf_event_value),
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.max_entries = 64,
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};
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SEC("kprobe/htab_map_get_next_key")
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int bpf_prog1(struct pt_regs *ctx)
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{
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u32 key = bpf_get_smp_processor_id();
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u64 count, *val;
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s64 error;
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count = bpf_perf_event_read(&counters, key);
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error = (s64)count;
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if (error <= -2 && error >= -22)
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return 0;
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val = bpf_map_lookup_elem(&values, &key);
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if (val)
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*val = count;
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else
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bpf_map_update_elem(&values, &key, &count, BPF_NOEXIST);
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return 0;
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}
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SEC("kprobe/htab_map_lookup_elem")
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int bpf_prog2(struct pt_regs *ctx)
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{
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u32 key = bpf_get_smp_processor_id();
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struct bpf_perf_event_value *val, buf;
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int error;
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error = bpf_perf_event_read_value(&counters, key, &buf, sizeof(buf));
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if (error)
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return 0;
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val = bpf_map_lookup_elem(&values2, &key);
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if (val)
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*val = buf;
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else
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bpf_map_update_elem(&values2, &key, &buf, 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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u32 _version SEC("version") = LINUX_VERSION_CODE;
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