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19 lines
480 B
C
19 lines
480 B
C
#include "vmlinux.h"
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#include <bpf/bpf_helpers.h>
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#include <bpf/bpf_tracing.h>
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#include <bpf/bpf_core_read.h>
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char LICENSE[] SEC("license") = "GPL";
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SEC("kprobe/blk_mq_start_request")
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int example(struct pt_regs *ctx)
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{
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u64 a = ctx->r15;
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struct request *req = (struct request *)(ctx->di);
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unsigned int something_ns = req->timeout;
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unsigned int data_len = req->__data_len;
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bpf_printk("data length %lld %ld %ld\n", data_len, something_ns, a);
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return 0;
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}
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