add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/samples/bpf/lathist_kern.c
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@@ -8,7 +8,7 @@
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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 "bpf_helpers.h"
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+#include <bpf/bpf_helpers.h>
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 #define MAX_ENTRIES	20
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 #define MAX_CPU		4
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@@ -18,12 +18,12 @@
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  * trace_preempt_[on|off] tracepoints hooks is not supported.
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  */
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-struct bpf_map_def SEC("maps") my_map = {
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-	.type = BPF_MAP_TYPE_ARRAY,
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-	.key_size = sizeof(int),
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-	.value_size = sizeof(u64),
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-	.max_entries = MAX_CPU,
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-};
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+struct {
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+	__uint(type, BPF_MAP_TYPE_ARRAY);
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+	__type(key, int);
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+	__type(value, u64);
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+	__uint(max_entries, MAX_CPU);
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+} my_map SEC(".maps");
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 SEC("kprobe/trace_preempt_off")
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 int bpf_prog1(struct pt_regs *ctx)
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@@ -61,12 +61,12 @@
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 		return log2(v);
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 }
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-struct bpf_map_def SEC("maps") my_lat = {
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-	.type = BPF_MAP_TYPE_ARRAY,
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-	.key_size = sizeof(int),
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-	.value_size = sizeof(long),
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-	.max_entries = MAX_CPU * MAX_ENTRIES,
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-};
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+struct {
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+	__uint(type, BPF_MAP_TYPE_ARRAY);
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+	__type(key, int);
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+	__type(value, long);
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+	__uint(max_entries, MAX_CPU * MAX_ENTRIES);
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+} my_lat SEC(".maps");
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 SEC("kprobe/trace_preempt_on")
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 int bpf_prog2(struct pt_regs *ctx)